10-Q

UNITED STATES

SECURITIES AND EXCHANGE COMMISSION

Washington, D.C. 20549

FORM 10-Q

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

For the quarterly period ended June 30, 2012

OR

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

For the transition period from              to             

Commission File No. 000-51401

FEDERAL HOME LOAN BANK OF CHICAGO

(Exact name of registrant as specified in its charter)

Federally chartered corporation	36-6001019
(State or other jurisdiction of incorporation or organization)	(I.R.S. Employer Identification No.)
200 East Randolph Drive Chicago, IL	60601
(Address of principal executive offices)	(Zip Code)

Registrant's telephone number, including area code: (312) 565-5700

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. Yes x  No o

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). Yes  x  No  o

Indicate by check mark whether the registrant is a large accelerated filer, an accelerated filer, a non-accelerated filer, or a smaller reporting company. See the definitions of “large accelerated filer,” “accelerated filer” and “smaller reporting company” 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).  Yes  o  No  x

There were 18,462,251 shares of registrant's capital stock outstanding as of July 31, 2012.

1

TABLE OF CONTENTS

PART I - FINANCIAL INFORMATION		3
Item 1.	Financial Statements (unaudited).	3
	Statements of Condition	3
	Statements of Income	4
	Statements of Comprehensive Income	5
	Statements of Capital	6
	Condensed Statements of Cash Flows	7
	Note 1 - Background and Basis of Presentation	8
	Note 2 - Summary of Significant Accounting Policies	9
	Note 3 - Recently Issued but Not Yet Adopted Accounting Standards	9
	Note 4 - Interest Income and Interest Expense	10
	Note 5 - Investment Securities	11
	Note 6 - Advances	20
	Note 7 - MPF Loans	21
	Note 8 - Allowance for Credit Losses	22
	Note 9 - Derivatives and Hedging Activities	26
	Note 10 - Consolidated Obligations	30
	Note 11 - Subordinated Notes	31
	Note 12 - Regulatory Actions	31
	Note 13 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS)	32
	Note 14 - Accumulated Other Comprehensive Income (Loss)	34
	Note 15 - Fair Value Accounting	35
	Note 16 - Commitments and Contingencies	43
	Note 17 - Transactions with Members and Other FHLBs	43
Item 2.	Management’s Discussion and Analysis of Financial Condition and Results of Operations.	44
Item 3.	Quantitative and Qualitative Disclosures about Market Risk.	73
Item 4.	Controls and Procedures.	75
PART II - OTHER INFORMATION		76
Item 1.	Legal Proceedings.	76
Item 1A.	Risk Factors.	76
Item 2.	Unregistered Sales of Equity Securities and Use of Proceeds.	77
Item 3.	Defaults upon Senior Securities.	77
Item 4.	Mine Safety Disclosures.	77
Item 5.	Other Information.	77
Item 6.	Exhibits.	77
Glossary of Terms		78

2

Federal Home Loan Bank of Chicago

PART I - FINANCIAL INFORMATION

Item 1.    Financial Statements (unaudited).

Statements of Condition (unaudited)

(Dollars in millions, except capital stock par value)

	June 30, 2012			December 31, 2011
Assets
Cash and due from banks	$	24		$	1,002
Federal Funds sold	1,697			950
Securities purchased under agreements to resell	2,100			825
Investment securities -
Trading, $0 and $15 pledged	2,046			2,935
Available-for-sale, $0 and $14 pledged	23,896			24,316
Held-to-maturity a, $0 and $490 pledged	10,597			11,477
Total investment securities	36,539			38,728
Advances, $9 and $9 carried at fair value	15,797			15,291
MPF Loans held in portfolio, net of allowance for credit losses of $(48) and $(45)	12,162			14,118
Accrued interest receivable	135			153
Derivative assets	52			40
Software and equipment, net of accumulated amortization/depreciation of $(150) and $(143)	35			38
Other assets	100			110
Total assets	$	68,641		$	71,255
Liabilities
Deposits - Interest bearing	$	632		$	535
- Non-interest bearing	95			113
Total deposits	727			648
Securities sold under agreements to repurchase	—			400
Consolidated obligations, net -
Discount notes, $4,135 and $11,466 carried at fair value	23,439			25,404
Bonds, $7,017 and $2,631 carried at fair value	39,872			39,880
Total consolidated obligations, net	63,311			65,284
Accrued interest payable	171			203
Mandatorily redeemable capital stock	10			4
Derivative liabilities	70			206
Affordable Housing Program assessment payable	71			61
Other liabilities	148			157
Subordinated notes	1,000			1,000
Total liabilities	65,508			67,963
Commitments and contingencies - Note 16
Capital
Class B-1 Capital stock - putable $100 par value - 1 million shares issued and outstanding at June 30, 2012	92
Class B-2 Capital stock - putable $100 par value - 18 million shares issued and outstanding at June 30, 2012	1,758
Total Capital stock - putable $100 par value -19 million shares issued and outstanding at June 30, 2012, and 24 million shares issued and outstanding at December 31, 2011	1,850			2,402
Retained earnings - unrestricted	1,435			1,289
- restricted	69			32
Total retained earnings	1,504			1,321
Accumulated other comprehensive income (loss)	(221		)	(431		)
Total capital	3,133			3,292
Total liabilities and capital	$	68,641		$	71,255

^a    Fair value of held-to-maturity securities: $11,336 and $12,131.

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

3

Federal Home Loan Bank of Chicago

Statements of Income (unaudited)

(Dollars in millions)

	Three months ended June 30,						Six months ended June 30,
	2012			2011			2012			2011
Interest income	$	485		$	569		$	1,010		$	1,155
Interest expense	347			439			713			900
Net interest income before provision for credit losses	138			130			297			255
Provision for credit losses	2			3			8			9
Net interest income	136			127			289			246
Non-interest gain (loss) on -
Total other-than-temporary impairment	—			(9		)	(2		)	(9		)
Net non-credit portion reclassified to (from) statements of comprehensive income	(14		)	(14		)	(13		)	(34		)
Net other-than-temporary impairment (OTTI) charges, credit portion	(14		)	(23		)	(15		)	(43		)
Trading securities	(11		)	(11		)	(25		)	(22		)
Derivatives and hedging activities	(8		)	(4		)	3			(18		)
Instruments held under fair value option	2			(8		)	8			(13		)
Other, net	4			3			8			6
Total non-interest gain (loss)	(27		)	(43		)	(21		)	(90		)
Non-interest expense -
Compensation and benefits	16			14			31			29
Other operating expenses	7			8			16			17
FHFA	2			2			4			6
Office of Finance	1			1			2			2
Other	6			4			9			11
Total non-interest expense	32			29			62			65
Income before assessments	77			55			206			91
Assessments -
Affordable Housing Program	8			4			21			7
Resolution Funding Corporation	—			10			—			17
Total assessments	8			14			21			24
Net income	$	69		$	41		$	185		$	67

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

4

Federal Home Loan Bank of Chicago

Statements of Comprehensive Income (unaudited)

(Dollars in millions)

	Three months ended June 30,						Six months ended June 30,
	2012			2011			2012			2011
Net income	$	69		$	41		$	185		$	67
Other comprehensive income:
Net unrealized gain (loss) on available-for-sale securities
Unrealized gains (losses)	244			234			212			157
Total net unrealized gain (loss) on available-for-sale securities	244			234			212			157
Net unrealized gain (loss) on held-to-maturity securities a
Reclassification to net income	1			—			2			1
Total net unrealized gain (loss) on held-to-maturity securities	1			—			2			1
Non-credit OTTI on available-for-sale securities
Net change in fair value	—			2			5			5
Reclassification of net non-credit portion to (from) statements of income	—			1			—			6
Total non-credit OTTI on available-for-sale securities	—			3			5			11
Non-credit OTTI on held-to-maturity securities
Reclassification of net non-credit portion to (from) statements of income	14			13			13			28
Accretion of non-credit portion to HTM asset	17			32			37			67
Total non-credit OTTI on held-to-maturity securities	31			45			50			95
Net unrealized gain (loss) on hedging activities
Unrealized gains (losses)	(110		)	(128		)	(58		)	(53		)
Reclassification of net realized (gains) losses to net income	—			(15		)	(1		)	(24		)
Total net unrealized gain (loss) on hedging activities	(110		)	(143		)	(59		)	(77		)
Total other comprehensive income	166			139			210			187
Total comprehensive income	$	235		$	180		$	395		$	254

^a  This item relates to the amortization of fair value adjustments from a 2007 transfer at fair value of available-for-sale securities to held-to-maturity securities.

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

5

Federal Home Loan Bank of Chicago

Statements of Capital (unaudited)

(Dollars and shares in millions)

	Capital Stock -   Putable							Retained Earnings								Accumulated Other Comprehensive Income (Loss)			Total Capital
	Shares a			Par Value				Unrestricted			Restricted		Total
Balance, December 31, 2010	23			$	2,333			$	1,099		$	—	$	1,099		$	(483	)	$	2,949
Comprehensive income								67			—		67			187			254
Proceeds from issuance of capital stock	1			22															22
Capital stock reclassified to mandatorily redeemable capital stock	—			(3		)													(3		)
Cash dividends on capital stock								(1		)	—		(1		)				(1		)
Balance, June 30, 2011	24			$	2,352			$	1,165		$	—	$	1,165		$	(296	)	$	3,221
Balance, December 31, 2011	24		b	$	2,402		b	$	1,289		$	32	$	1,321		$	(431	)	$	3,292
Comprehensive income								148			37		185			210			395
Proceeds from issuance of capital stock	1			125															125
Repurchases of capital stock	(6	)		(645		)													(645		)
Capital stock reclassified to mandatorily redeemable capital stock	—			(32		)													(32		)
Cash dividends on capital stock								(2		)	—		(2		)				(2		)
Balance, June 30, 2012	19			$	1,850			$	1,435		$	69	$	1,504		$	(221	)	$	3,133

^a  Excludes outstanding shares reclassified to mandatorily redeemable capital stock. See Note 13 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS).

^b  On January 1, 2012 Capital Stock, shares and par value, were converted to B-1 and B-2 shares under our new Capital Plan. See Note 13 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS).

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

6

Federal Home Loan Bank of Chicago

Condensed Statements of Cash Flows (unaudited)

(Dollars in millions)

	Six months ended June 30,	2012			2011
Operating	Net cash provided by (used in) operating activities	$	(8	)	$	170
Investing	Net change Federal Funds sold	(747		)	2,744
	Net change securities purchased under agreements to resell	(1,275		)	3,125
	Advances -
	Principal collected	83,077			49,024
	Issued	(83,577		)	(47,457		)
	MPF Loans held in portfolio-
	Principal collected	1,952			2,197
	Purchases	(34		)	(23		)
	Trading securities -
	Proceeds from maturities, sales, and paydowns	1,548			1,281
	Purchases	(687		)	(2,117		)
	Held-to-maturity securities a-
	Short-term held-to-maturity securities, net	(50		)	209
	Proceeds from maturities	1,003			1,254
	Purchases	(18		)	(1,000		)
	Available-for-sale securities -
	Proceeds from maturities and sales	714			522
	Proceeds from sale of foreclosed assets	35			34
	Capital expenditures for software and equipment	(4		)	(3		)
	Net cash provided by (used in) investing activities	1,937			9,790
Financing	Net change deposits	79			(196		)
	Maturities of securities sold under agreements to repurchase	(400		)	—
	Net proceeds from issuance of consolidated obligations -
	Discount notes	191,476			582,256
	Bonds	22,620			16,783
	Payments for maturing and retiring consolidated obligations -
	Discount notes	(193,443		)	(584,049		)
	Bonds	(22,655		)	(22,251		)
	Net proceeds (payments) on derivative contracts with financing element	(36		)	(63		)
	Proceeds from issuance of capital stock	125			22
	Repurchase or redemption of capital stock	(645		)	—
	Redemptions of mandatorily redeemable capital stock	(26		)	—
	Cash dividends paid	(2		)	(1		)
	Net cash provided by (used in) financing activities	(2,907		)	(7,499		)
	Net increase (decrease) in cash and due from banks	(978		)	2,461
	Cash and due from banks at beginning of year	1,002			282
	Cash and due from banks at end of period	$	24		$	2,743
Supplemental	Capital stock reclassified to mandatorily redeemable capital stock	$	32		$	3
	Transfer of MPF Loans to real estate owned	41			36

^a  Short-term held-to-maturity securities, net consist of investment securities that have a maturity of less than 90 days when purchased. Proceeds from maturities and purchases consist of securities with maturities of 90 days or more.

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

7

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 1 – Background and Basis of Presentation

The Federal Home Loan Bank of Chicago ^a is a federally chartered corporation and one of 12 Federal Home Loan Banks (the FHLBs) that, with the Office of Finance, comprise the Federal Home Loan Bank System (the System).  The FHLBs are government-sponsored enterprises (GSE) of the United States of America and were organized under the Federal Home Loan Bank Act of 1932, as amended (FHLB Act), in order to improve the availability of funds to support home ownership.  We are supervised and regulated by the Federal Housing Finance Agency (FHFA), an independent federal agency in the executive branch of the United States government. We provide credit to members principally in the form of secured loans called advances. We also provide liquidity for home mortgage loans to members approved as Participating Financial Institutions (PFIs) through the Mortgage Partnership Finance^® (MPF^®) Program ^b.

Our accounting and financial reporting policies conform to generally accepted accounting principles in the United States of America (GAAP). The preparation of financial statements in conformity with GAAP requires the extensive use of management's estimates and assumptions that affect the reported amounts of assets and liabilities, as well as the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses. Actual results could differ from those estimates. Prior period amounts have been reclassified to conform to the current period presentation. We adopted the new FASB guidance on the presentation of comprehensive income that was issued in June of 2011 effective January 1, 2012. Specifically, we adopted on a retrospective basis and elected to present comprehensive income in two separate consecutive statements. The new guidance did not change the items that are currently reported in our other comprehensive income or when an item of other comprehensive income must be reclassified into net income. As a result, the effect of the new guidance on our financial statements was limited to how we present our financial statements. In the opinion of management, all normal recurring adjustments have been included for a fair statement of this interim financial information. These unaudited financial statements should be read in conjunction with the audited financial statements for the year ended December 31, 2011, included in our Annual Report on Form 10-K (2011 Form 10-K) filed with the SEC.

Our investments in variable interest entities (VIEs) include, but are not limited to, senior interests in private label mortgage-backed securities (MBS) and Federal Family Education Loan Program (FFELP) asset-backed securities (ABS). We have evaluated these VIEs for the periods presented, and determined that we are not required to apply consolidation accounting since we are not the primary beneficiary in any of these VIEs. Excluding contractually required amounts, we have not provided financial or other support (explicitly or implicitly) during the periods presented in our financial statements. Further, we do not intend to provide such support in the future. The carrying amounts and classification of the assets that relate to these VIEs are shown in investment securities in our statements of condition. We have no liabilities related to these VIEs. Our maximum loss exposure for our VIEs is limited to the carrying value.

For purposes of the statements of cash flows, we consider only cash and due from banks as cash and cash equivalents.

^a  Unless otherwise specified, references to we, us, our, and the Bank are to the Federal Home Loan Bank of Chicago.

^b  “Mortgage Partnership Finance”, “MPF”, and “MPF Xtra” are registered trademarks of the Federal Home Loan Bank of Chicago.

8

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 2 – Summary of Significant Accounting Policies

Unless otherwise noted below, our Summary of Significant Accounting Policies can be found in our 2011 Form 10-K starting on page F-10. The following accounting policies have been revised or updated during 2012:

Changes in Accounting Policies

Fair Value Measurement and Disclosures

In May of 2011, the FASB issued amendments to achieve common fair value measurement and disclosure requirements in U.S. GAAP and International Financial Reporting Standards (IFRS). The amendments serve to clarify the FASB's intent about the application of existing fair value measurement and disclosure requirements, or change a particular principle or requirement for measuring fair value or disclosing information about fair value measurements. The amendments became effective on a prospective basis January 1, 2012. Upon adoption, we elected the “portfolio exception” for purposes of determining the nonperformance risk adjustment, if any, to the fair value of our derivative instruments. The “portfolio exception” allows for the nonperformance risk adjustment to the fair value of our derivative assets and derivative liabilities to be measured based on the net counterparty position (i.e. the price that would be received to sell a net long position or transfer a net short position for a particular credit risk exposure), rather than the individual values of financial instruments within the portfolio (i.e., the gross position). The new guidance did not have a material effect on our operating activities and financial statements at the time of adoption. Refer to Note 15 - Fair Value Accounting for the new disclosures.

Reconsideration of Effective Control for Repurchase Agreements

In April of 2011, the FASB issued an amendment to existing criteria for determining whether or not a transferor has retained effective control over securities sold under agreements to repurchase.  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 amendment became effective on a prospective basis for us beginning January 1, 2012.  The new guidance did not have an effect on our operating activities and financial statements at the time of adoption.

Note 3 – Recently Issued but Not Yet Adopted Accounting Standards

Asset Classification and Charge-offs

On April 9, 2012, the FHFA 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). The guidance establishes a standard and uniform methodology for classifying assets and prescribes the timing of asset charge-offs, excluding investment securities. 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. We are currently assessing the provisions of AB 2012-02 in coordination with the FHFA and therefore have not yet determined when we will implement the guidance, or its effect on our operating activities or financial statements.

Disclosures about Offsetting Assets and Liabilities

In December of 2011, the FASB issued new disclosure requirements pertaining to offsetting (netting) of assets and liabilities to increase the comparability between the statement of financial position prepared under U.S. GAAP and the statement of financial position prepared under IFRS. Currently, offsetting requirements represent a significant difference between amounts presented in the statement of financial position of entities that prepare their statement of financial position pursuant to U.S. GAAP versus entities that prepare their statement of financial position pursuant to IFRS. We would be required to disclose both gross information and net information about both instruments and transactions eligible for offset in our statement of condition and instruments and transactions subject to an agreement such as a master netting arrangement. Similar agreements include (1) derivative clearing agreements, (2) global master repurchase agreements, and (3) global master securities lending agreements. Similar financial instruments include (1) derivatives, (2) sale and repurchase agreements and reverse sale and repurchase agreements, and (3) securities borrowing and securities lending arrangements. Our policy is to only offset derivative instruments in our statements of condition. We do not have other financial instruments within the scope of the new guidance that are subject to an enforceable master netting arrangement or similar agreement. The new guidance takes effect for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The disclosure requirements would be applied retrospectively for all comparative periods presented.

9

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 4 – Interest Income and Interest Expense

The following table presents interest income and interest expense for the periods indicated:

	Three months ended June 30,						Six months ended June 30,
	2012			2011			2012			2011
Interest income -
Federal Funds sold	$	—		$	—		$	1		$	2
Securities purchased under agreements to resell	1			1			2			4
Interest bearing deposits	1			—			1			—
Investment securities -
Trading	14			17			31			31
Available-for-sale	161			162			326			327
Held-to-maturity	110			130			224			265
Total investment securities	285			309			581			623
Advances	46			62			94			130
Advance prepayment fees, net of fair value hedge adjustments of    $(2), $(7), $(24), and $(7)	9			5			35			5
Total Advances	55			67			129			135
MPF Loans held in portfolio	147			194			302			395
Less: Credit enhancement fees	(4		)	(2		)	(6		)	(4		)
MPF Loans held in portfolio, net	143			192			296			391
Total interest income	485			569			1,010			1,155
Interest expense -
Securities sold under agreements to repurchase	—			5			—			9
Consolidated obligations -
Discount notes	77			92			153			190
Bonds	255			328			531			673
Total consolidated obligations	332			420			684			863
Subordinated notes	15			14			29			28
Total interest expense	347			439			713			900
Net interest income before provision for credit losses	138			130			297			255
Provision for credit losses	2			3			8			9
Net interest income	$	136		$	127		$	289		$	246

10

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 5 – Investment Securities

Our major security types presented in the tables below are defined as follows:

• U.S. Government & other government related consists of the sovereign debt of the United States; debt issued by Fannie Mae, Freddie Mac, and the Federal Farm Credit Banks Funding Corporation; and non mortgage-backed securities of the Small Business Administration, Federal Deposit Insurance Corporation (FDIC), and Tennessee Valley Authority.

• Federal Family Education Loan Program - asset backed securities (FFELP ABS)

• Government Sponsored Enterprises (GSE) residential consists of mortgage-backed securities (MBS) issued by Fannie Mae and Freddie Mac.

• Government-guaranteed residential consists of MBS issued by Ginnie Mae.

• Private-label residential MBS

Gains and losses on sales of securities are determined using the specific identification method and are included in non-interest gain (loss) on the statements of income.

Pledged Collateral

We enter into bilateral collateral agreements and execute derivatives and other transactions with major banks and broker-dealers. We pledge investment securities as collateral under these agreements. See Note 9 - Derivatives and Hedging Activities.

Trading Securities

The following table presents the fair value of our trading securities:

As of	June 30, 2012		December 31, 2011
U.S. Government & other government related	$	1,888	$	2,737
MBS:
GSE residential	155		195
Government-guaranteed residential	3		3
Total MBS	158		198
Total trading securities	$	2,046	$	2,935

At June 30, 2012, and 2011, we had net year-to-date unrealized gains (losses) of $(25) million and $(21) million on trading securities still held at period end.

11

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Amortized Cost Basis and Fair Value – Available-for-Sale Securities (AFS)

	Amortized Cost Basis		Non-Credit  OTTI Recognized  in AOCI (Loss)			Gross Unrealized Gains in AOCI		Gross Unrealized Losses in AOCI			Fair Value
As of June 30, 2012
U.S. Government & other government related	$	760	$	—		$	62	$	(2	)	$	820
FFELP ABS	7,425		—			486		(41		)	7,870
MBS:
GSE residential	11,516		—			768		(109		)	12,175
Government-guaranteed residential	2,806		—			163		—			2,969
Private-label residential	84		(21		)	—		(1		)	62
Total MBS	14,406		(21		)	931		(110		)	15,206
Total	$	22,591	$	(21	)	$	1,479	$	(153	)	$	23,896
As of December 31, 2011
U.S. Government & other government related	$	947	$	—		$	56	$	(2	)	$	1,001
FFELP ABS	7,796		—			398		(35		)	8,159
MBS:
GSE residential	11,565		—			658		(91		)	12,132
Government-guaranteed residential	2,831		—			130		—			2,961
Private-label residential	90		(26		)	—		(1		)	63
Total MBS	14,486		(26		)	788		(92		)	15,156
Total	$	23,229	$	(26	)	$	1,242	$	(129	)	$	24,316

12

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Amortized Cost, Carrying Value, and Fair Value - Held-to-Maturity Securities (HTM)

	Amortized Cost Basis		Non-credit OTTI Recognized  in AOCI (Loss)			Carrying Value		Gross Unrecognized Holding  Gains		Gross Unrecognized Holding  Losses			Fair  Value
As of June 30, 2012
U.S. Government & other government related	$	2,594	$	—		$	2,594	$	126	$	—		$	2,720
State or local housing agency	26		—			26		—		—			26
MBS:
GSE residential	5,032		—			5,032		413		—			5,445
Government-guaranteed residential	1,373		—			1,373		41		—			1,414
Private-label residential	1,988		(416		)	1,572		177		(18		)	1,731
Total MBS	8,393		(416		)	7,977		631		(18		)	8,590
Total	$	11,013	$	(416	)	$	10,597	$	757	$	(18	)	$	11,336
As of December 31, 2011
U.S. Government & other government related	$	2,573	$	—		$	2,573	$	104	$	—		$	2,677
State or local housing agency	27		—			27		—		—			27
MBS:
GSE residential	5,761		—			5,761		423		—			6,184
Government-guaranteed residential	1,414		—			1,414		34		—			1,448
Private-label residential	2,168		(466		)	1,702		145		(52		)	1,795
Total MBS	9,343		(466		)	8,877		602		(52		)	9,427
Total	$	11,943	$	(466	)	$	11,477	$	706	$	(52	)	$	12,131

13

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Aging of Unrealized Temporary Losses

The following tables present unrealized temporary losses on our AFS and HTM portfolio for periods under 12 months and for 12 months or more. We recognized no OTTI charges on these unrealized loss positions because we expect to recover the entire amortized cost basis, we do not intend to sell these securities, and we believe it is more likely than not that we will not be required to sell them prior to recovering their amortized cost basis. In the tables below, in cases where the fair value or gross unrealized losses for an investment category is insignificant, we don't report a balance.

Available-for-Sale Securities

	Less than 12 Months					12 Months or More						Total
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses				Fair Value		Gross Unrealized Losses
As of June 30, 2012
U.S. Government & other government related	$	82	$	(2	)	$	—	$	—			$	82	$	(2	)
FFELP ABS	112		(1		)	1,141		(40		)		1,253		(41		)
MBS:
GSE residential	4,115		(109		)	—		—				4,115		(109		)
Private-label residential	—		—			62		(22		)	a	62		(22		)	a
Total MBS	4,115		(109		)	62		(22		)		4,177		(131		)
Total available-for-sale securities	$	4,309	$	(112	)	$	1,203	$	(62	)		$	5,512	$	(174	)
As of December 31, 2011
U.S. Government & other government related	$	98	$	(2	)	$	—	$	—			$	98	$	(2	)
FFELP ABS	223		(3		)	1,203		(32		)		1,426		(35		)
MBS:
GSE residential	4,073		(91		)	—		—				4,073		(91		)
Government-guaranteed residential	33		—			80		—				113		—
Private-label residential	—		—			63		(27		)	a	63		(27		)	a
Total MBS	4,106		(91		)	143		(27		)		4,249		(118		)
Total available-for-sale securities	$	4,427	$	(96	)	$	1,346	$	(59	)		$	5,773	$	(155	)

^a  Includes $33 million and $28 million of gross unrealized/unrecognized recoveries in fair value at June 30, 2012, and at December 31, 2011.

14

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Held-to-Maturity Securities

	Less than 12 Months				12 Months or More					Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
As of June 30, 2012
U.S. Government & other government related	$	17	$	—	$	—	$	—		$	17	$	—
MBS:
GSE residential	—		—		37		—			37		—
Private-label residential	—		—		1,578		(434		)	1,578		(434		)
Total MBS	—		—		1,615		(434		)	1,615		(434		)
Total held-to-maturity securities	$	17	$	—	$	1,615	$	(434	)	$	1,632	$	(434	)
As of December 31, 2011
U.S. Government & other government related	$	7	$	—	$	—	$	—		$	7	$	—
MBS:
GSE residential	—		—		37		—			37		—
Private-label residential	—		—		1,653		(518		)	1,653		(518		)
Total MBS	—		—		1,690		(518		)	1,690		(518		)
Total held-to-maturity securities	$	7	$	—	$	1,690	$	(518	)	$	1,697	$	(518	)

Contractual Maturity Terms

The table below presents the amortized cost basis and fair value of AFS and HTM securities by contractual maturity, excluding ABS and MBS securities. These securities are excluded because their expected maturities may differ from their contractual maturities if borrowers of the underlying loans elect to prepay their loans.

	Available-for-Sale				Held-to-Maturity
As of June 30, 2012	Amortized Cost		Fair  Value		Amortized Cost		Fair  Value
Year of Maturity -
Due in one year or less	$	—	$	—	$	805	$	812
Due after one year through five years	—		—		65		66
Due after five years through ten years	253		272		515		532
Due after ten years	507		548		1,235		1,336
Total	$	760	$	820	$	2,620	$	2,746

15

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Other-Than-Temporary Impairment

We recognized credit losses into earnings on securities in an unrealized loss position for which we do not expect to recover the entire amortized cost basis. Non-credit losses are recognized in AOCI since we do not intend to sell these securities and we believe it is more likely than not that we will not be required to sell any investment security before the recovery of its amortized cost basis. The non-credit loss in AOCI on HTM securities will be accreted back into the HTM securities over their remaining lives as an increase to the carrying value, since we ultimately expect to collect these amounts. See Statements of Comprehensive Income on page 5.

Significant Inputs Used on OTTI Securities

Our OTTI analysis of our private-label MBS includes key modeling assumptions, significant inputs, and methodologies provided by an FHLB System OTTI Committee. We use the information provided to generate cash flow projections used in analyzing credit losses and determining OTTI for private-label MBS. The OTTI Committee was formed by the FHLBs to achieve consistency among the FHLBs in their analyses of the OTTI of private-label MBS. We are responsible for making our own determination of impairment, which includes determining the reasonableness of assumptions, significant inputs, and methodologies used, and performing the required present value calculations using appropriate historical cost bases and yields. 

In cases where the fair value of a private-label MBS is less than its amortized cost basis at the balance sheet date, we assess whether its entire amortized cost basis will be recovered. Specifically, we perform a cash flow analysis for substantially all of these securities that utilizes two models provided by independent third parties.

The first model considers borrower characteristics and the particular attributes of the loans underlying the securities, in conjunction with assumptions about future changes in home prices and interest rates, prepayment rates, default rates, 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), which are based upon an assessment of the individual housing markets. 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 urban area with a population of 10,000 or more people.

The second model uses the month-by-month projections of future loan performance derived from the first model and allocates the projected loan level cash flows and losses to the various security classes in the securitization structure in accordance with its prescribed cash flow and loss allocation rules.

Our housing price forecast as of June 30, 2012 assumed current-to-trough home price declines ranging from 0.0% (for those housing markets that are believed to have reached their trough) to 6.0%. For those markets where further home price declines are anticipated, the declines were projected to occur over the 3- to 9-month period beginning April 1, 2012. From the trough, home prices were projected to recover using one of five different recovery paths that vary by housing market. For the vast majority of markets, the declines were projected to be in the narrower range from 1% to 4% over the 3-month period beginning April 1, 2012.

The following table presents the projected home price recovery by future month.

As of June 30, 2012	Recovery Range Annualized %
Months	Low	High
1-6	0.0%	2.8%
7-18	0.0%	3.0%
19-24	1.0%	4.0%
25-30	2.0%	4.0%
31-42	2.0%	5.0%
43-66	2.0%	6.0%
Thereafter	2.3%	5.6%

16

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

The table below presents the inputs we used to measure the amount of the credit loss recognized in earnings during the current period attributable to OTTI securities. The model used to estimate cash flows classifies the OTTI securities as either prime, Alt-A, or subprime based on an assessment as of the current period rather than the classification at the time of issuance.

			Prepayment Rates			Default Rates			Loss Severities			Credit Enhancement
			%	Range %		%	Range %		%	Range %		%	Range %
As of June 30, 2012	Unpaid Principal Balance		Weighted Average	Low	High	Weighted Average	Low	High	Weighted Average	Low	High	Weighted Average	Low	High
2006	$	588	7.0	6.0	8.0	35.0	30.0	43.0	41.0	37.0	47.0	1.0	—	7.0
2004 & prior	2		29.0	29.0	29.0	—	—	—	—	—	—	41.0	41.0	41.0
Total Prime	590		8.0	6.0	29.0	35.0	—	43.0	41.0	—	47.0	1.0	—	41.0
2006	23		5.0	5.0	5.0	41.0	41.0	41.0	57.0	57.0	57.0	5.0	5.0	5.0
Total Alt-A	23		5.0	5.0	5.0	41.0	41.0	41.0	57.0	57.0	57.0	5.0	5.0	5.0
Total	$	613	7.0	5.0	29.0	35.0	—	43.0	42.0	—	57.0	1.0	—	41.0

In the following two tables, we classify our private-label MBS as prime, subprime, or Alt-A based upon the nature of the majority of underlying mortgages collateralizing each security based on the issuer's classification, or as published by a nationally recognized statistical rating organization (NRSRO), at the time of issuance of the MBS.  On October 15, 2010, we instituted litigation relating to sixty-four private label MBS bonds purchased by us in an aggregate original principal amount of approximately $4.29 billion. Our complaints assert claims for untrue or misleading statements in the sale of securities, and it is possible that the classifications of private-label MBS, as well as other statements made about the securities by the issuer, are inaccurate. 

The following table presents the current outstanding balances on private-label MBS that were other-than-temporarily impaired at some point during the life of the securities. This table does not include HTM and AFS securities that are in an unrealized loss position, which have not had an OTTI charge during the life of the security.

As of June 30, 2012	Unpaid Principal Balance		Amortized Cost Basis		Carrying Value		Fair Value
Private-label residential MBS:
Alt-A	$	129	$	82	$	61	$	61
Total OTTI AFS securities	$	129	$	82	$	61	$	61
Private-label residential MBS:
Prime	$	1,471	$	1,141	$	848	$	1,003
Subprime	863		564		441		454
Total OTTI HTM securities	$	2,334	$	1,705	$	1,289	$	1,457

17

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

We recognized OTTI as presented in the following table. Net non-credit portion reclassified (from) to AOCI represents the net amount of impairment losses recognized into earnings from AOCI or reclassified to AOCI from earnings.

	Total OTTI			Net Non-credit Portion (from) to AOCI			OTTI Credit Portion
Three months ended June 30, 2012
Prime	$	—		$	(14	)	$	(14	)
Alt-A	—			—			—
Subprime	—			—			—
Total OTTI	$	—		$	(14	)	$	(14	)
Three months ended June 30, 2011
Prime	$	—		$	(17	)	$	(17	)
Alt-A	—			(1		)	(1		)
Subprime	(9		)	4			(5		)
Total OTTI	$	(9	)	$	(14	)	$	(23	)
Six months ended June 30, 2012
Prime	$	—		$	(14	)	$	(14	)
Alt-A	—			—			—
Subprime	(2		)	1			(1		)
Total OTTI	$	(2	)	$	(13	)	$	(15	)
Six months ended June 30, 2011
Prime	$	—		$	(24	)	$	(24	)
Alt-A	—			(6		)	(6		)
Subprime	(9		)	(4		)	(13		)
Total OTTI	$	(9	)	$	(34	)	$	(43	)

18

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

The following table presents the changes in the cumulative amount of credit losses (recognized into earnings) on OTTI investment securities for the periods stated.

Three months ended June 30,	2012			2011
Beginning Balance	$	712		$	672
Additions:
Credit losses on securities for which OTTI was not previously recognized	—			—
Additional credit losses on securities for which an OTTI charge was previously recognized	14			23
Total OTTI credit losses recognized in the period	14			23
Reductions:
Securities sold, matured, paid down or prepaid over the period	—			(1		)
Increases in cash flows expected to be collected, recognized over the remaining life of the security	(2		)	—
Ending Balance	$	724		$	694
Six months ended June 30,
Beginning Balance	$	712		$	653
Additions:
Credit losses on securities for which OTTI was not previously recognized	—			—
Additional credit losses on securities for which an OTTI charge was previously recognized	15			43
Total OTTI credit losses recognized in the period	15			43
Reductions:
Securities sold, matured, paid down or prepaid over the period	—			—
Increases in cash flows expected to be collected, recognized over the remaining life of the security	(3		)	(2		)
Ending Balance	$	724		$	694

19

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 6 – Advances

We offer a wide range of fixed- and variable-rate advance products with different maturities, interest rates, payment characteristics and optionality. The following table presents our advances by callable/putable features:

As of	June 30, 2012		December 31, 2011
Noncallable/nonputable	$	12,325	$	11,456
Callable	779		806
Putable	2,486		2,828
Total par value	15,590		15,090
Advance hedging adjustments	178		189
Other adjustments	29		12
Total advances	$	15,797	$	15,291

The following table presents our advances by redemption terms:

As of June 30, 2012	Amount		Weighted Average Interest Rate			Next Maturity or Call Date		Next Maturity or Put Date
Due in one year or less	$	6,149	0.85	%		$	6,924	$	8,441
One to two years	991		2.45	%		891		980
Two to three years	1,179		2.10	%		1,179		1,172
Three to four years	1,278		2.59	%		928		699
Four to five years	1,594		3.54	%		1,394		1,031
More than five years	4,399		1.60	%	a	4,274		3,267
Total par value	$	15,590	1.68	%		$	15,590	$	15,590

^a  Weighted average interest rate is due to the inclusion of a significant variable-rate advance.

Advances Concentration

As of June 30, 2012, the following advance borrowers exceeded 10% of our total advances outstanding: BMO Harris Bank N. A. with $2.4 billion or 15%, Associated Bank, National Association with $1.9 billion or 12%, and State Farm Bank, F.S.B. with $1.6 billion or 10% of total advances outstanding.

20

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 7 – MPF Loans

We developed the MPF Program to allow us to invest in mortgages to help fulfill our housing mission and provide an additional source of liquidity to our members. The MPF Program is a secondary mortgage market structure under which we acquired and funded eligible mortgage loans from or through PFIs, and in some cases we purchased participations in pools of eligible mortgage loans from other FHLBs (MPF Banks). MPF Loans are defined as conforming conventional and Government fixed-rate mortgage loans secured by one-to-four family residential properties with maturities ranging from 5 years to 30 years or participations in such mortgage loans.

The following table presents information on MPF Loans held in our portfolio by contractual maturity at time of purchase. All are fixed-rate. Government is comprised of loans insured by the Federal Housing Administration (FHA) or the Department of Housing and Urban Development (HUD) and loans guaranteed by the Department of Veteran Affairs (VA) or Department of Agriculture Rural Housing Service (RHS). MPF Loans outstanding continue to decrease as a result of our ongoing strategy to not add MPF Loans to our balance sheet, except for loans being acquired under our affordable housing programs.

As of	June 30, 2012			December 31, 2011
Medium term (15 years or less)	$	3,126		$	3,810
Long term (greater than 15 years)	8,920			10,155
Total unpaid principal balance	12,046			13,965
Net premiums, credit enhancement and deferred loan fees	45			53
MPF hedging adjustments	119			145
Total before allowance for credit losses	12,210			14,163
Allowance for credit losses	(48		)	(45		)
Total MPF Loans held in portfolio, net	$	12,162		$	14,118
Conventional	$	9,715		$	11,433
Government	2,331			2,532
Total unpaid principal balance	$	12,046		$	13,965

See Note 8 - Allowance for Credit Lossesfor information related to our credit risk on MPF Loans and allowance for credit losses methodology.

21

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 8 – Allowance for Credit Losses

We have established an allowance methodology for each of our portfolio segments:

•credit products (advances, letters of credit and other extensions of credit to borrowers);

•conventional MPF Loans held for portfolio;

•government MPF Loans held for portfolio; and

•term Federal Funds sold and term securities purchased under agreements to resell.

For detailed information on these methodologies and our accounting policies please see Note 9 - Allowance for Credit Losses in our 2011 Form 10-K.

Credit Products

For the periods presented, we had no credit products that were past due, on nonaccrual status, or considered impaired. In addition, there have been no troubled debt restructurings related to our credit products during the periods then ended. Based upon the collateral we held as security, our credit extension and collateral policies, our credit analysis and the repayment history on credit products, we do not believe that any credit losses have been incurred on our credit products; accordingly, we have not recorded any allowance for credit losses for our credit products. Additionally, no liability was recorded to reflect an allowance for credit losses for our credit products with off-balance sheet credit exposures.

Conventional MPF Loans

MPF Risk Sharing Structure

For a definition of MPF Risk Sharing Structure see page F-36 in our 2011 Form 10-K. We share the risk of credit losses on conventional MPF Loan products with our PFIs (excluding the MPF Xtra product) by structuring potential losses on conventional MPF Loans into layers with respect to each master commitment (MC). We require that conventional MPF Loans held in our portfolio be credit enhanced at inception so that our risk of loss is limited to be equivalent to the losses of an investor in an AA rated mortgage backed security. As a part of our methodology to determine the amount of credit enhancement necessary, we analyze the risk characteristics of each MPF Loan using a model licensed from an NRSRO. We use the model to evaluate loan data provided by the PFI as well as other relevant information.

The table below presents the impact of the MPF Risk Sharing Structure and severity rates on our allowance for credit losses. As of June 30, 2012, our Total Severity Rate for the MPF Risk Sharing Structure was 38.0%, which included a weighted average Credit Loss Severity Rate of 22.0% attributable to the MPF Loan pool and impaired collateral dependent MPF Loans. Comparable rates at December 31, 2011, were 35.0% and 19.3%. For detailed definitions of how Total Severity Rate and Credit Loss Severity Rate are calculated, see Loss Severity on page F-38 in our 2011 Form 10-K.

As of	June 30, 2012			December 31, 2011
Total estimated losses outstanding	$	96		$	97
Less: losses expected to be absorbed by MPF Risk Sharing Structure	(23		)	(23		)
Our share of total losses	73			74
Less: non-credit losses a	(31		)	(34		)
Credit losses	42			40
Plus: other estimated credit losses in the remaining portfolio	6			5
Allowance for credit losses on conventional MPF Loans	$	48		$	45

^a  Non-credit losses represent period costs on Real Estate Owned (REO), for example, real estate taxes and maintenance costs and the economic loss of interest income that was contractually due but which was not recognized in our financial statements as the impaired MPF Loans were placed on nonaccrual status.

22

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

The following table presents the changes in the allowance for credit losses on conventional MPF Loans and the recorded investment by impairment methodology.

	June 30, 2012			June 30, 2011
For the three months ended
Allowance for credit losses on conventional MPF Loans-
Balance, beginning of period	$	49		$	38
Losses charged to the allowance	(3		)	(2		)
Provision for credit losses	2			3
Balance, end of period	$	48		$	39
For the six months ended
Allowance for credit losses on conventional MPF Loans-
Balance, beginning of period	$	45		$	33
Losses charged to the allowance	(5		)	(3		)
Provision for credit losses	8			9
Balance, end of period	$	48		$	39
As of	June 30, 2012			December 31, 2011
Allowance assigned to conventional MPF Loans-
Specifically identified and individually evaluated for impairment	$	30		$	26
Homogeneous pools of loans and collectively evaluated for impairment	18			19
Total	$	48		$	45
Recorded Investment in Conventional MPF Loans-
Individually evaluated for impairment - with an allowance	$	197		$	204
Collectively evaluated for impairment	9,716			11,470
Total	$	9,913		$	11,674

Government MPF Loans Held for Portfolio

We invest in fixed-rate government MPF Loans which are insured or guaranteed by the Federal Housing Administration (FHA), the Department of Veterans Affairs (VA), the Rural Housing Service of the Department of Agriculture (RHS), and/or by the Department of Housing and Urban Development (HUD). The PFI provides and maintains insurance or a guaranty from these agencies. The PFI 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 MPF Loans. Any losses incurred on such loans that are not recovered from the issuer or guarantor, are absorbed by the servicing PFIs. Therefore, we only have credit risk for these loans if the servicing PFI fails to pay for losses not covered by FHA or HUD insurance, or VA or RHS guarantees. In this regard, based on our assessment of our servicing PFIs, we did not establish an allowance for credit losses for our government MPF Loan portfolio as of the periods presented. Further, due to the government guarantee or insurance, these loans are not placed on nonaccrual status.

23

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Credit Quality Indicators - MPF Loans

The table below summarizes our recorded investment in MPF Loans by our key credit quality indicators.

	June 30, 2012									December 31, 2011
As of	Conventional			Government			Total			Conventional			Government			Total
Past due 30-59 days	$	191		$	135		$	326		$	222		$	161		$	383
Past due 60-89 days	60			45			105			74			55			129
Past due 90 days or more	278			243			521			303			248			551
Total past due	529			423			952			599			464			1,063
Total current	9,384			1,935			11,319			11,075			2,097			13,172
Total recorded investment	$	9,913		$	2,358		$	12,271		$	11,674		$	2,561		$	14,235
In process of foreclosure a	$	177		$	100		$	277		$	193		$	63		$	256
Serious delinquency rate b	2.83		%	10.30		%	4.27		%	2.62		%	9.69		%	3.89		%
Past due 90 days or more still accruing interest c	$	114		$	243		$	357		$	128		$	248		$	376
On nonaccrual status	$	201		$	—		$	201		$	211		$	—		$	211

^a  Includes MPF Loans for which our master servicer has reported that the foreclosure process has been initiated or that our PFI servicer is seeking the deed to the underlying collateral in lieu of foreclosure.  It should be noted that although a MPF Loan is in the process of foreclosure, it does not necessarily mean that foreclosure is probable.

^b  MPF Loans that are 90 days or more past due or in the process of foreclosure as a percentage of the total recorded investment.

^c  Consists of MPF Loans that are either government mortgage loans or conventional mortgage loans that are well secured (by collateral that have a realizable value sufficient to discharge the debt or by the guarantee or insurance, such as PMI, of a financially responsible party) and in the process of collection.

Troubled Debt Restructurings

We consider a troubled debt restructuring to have occurred when we grant a concession to a borrower that we would not otherwise consider for economic or legal reasons related to the borrower's financial difficulties.  An MPF Loan involved in our troubled debt restructuring program is individually evaluated for impairment when determining its related allowance for credit losses.  Credit loss is measured by factoring in expected cash shortfalls (i.e., loss severity rate) incurred as of the reporting date as well as the economic loss attributable to delaying the original contractual principal and interest due dates.

In the event a borrower qualifies for a troubled debt restructuring under our program, we typically modify the borrower's monthly payment for a period of up to 36 months to try to achieve a target housing expense ratio of not more than 31% of their monthly qualifying income.   Any and all delinquent interest on the loan may be capitalized as long as the resulting principal balance does not exceed the original principal balance, otherwise all delinquent interest is written off.  Next, we re-amortize the new outstanding balance to reflect a principal and interest payment for a term not to exceed 40 years and attempt to achieve the target housing expense ratio. This results 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 target housing expense ratio is still not met, we reduce the interest rate in 0.125% increments below the original note rate, to a floor rate of 3.00% for up to 36 months, in an effort to further reduce principal and interest payments again, until the target housing expense ratio is met.

The following table shows our recorded investment balance in troubled debt restructured loans:

	June 30, 2012						December 31, 2011
As of	Performing a		Nonperforming b		Total		Performing a		Nonperforming b		Total
Conventional MPF Loans	$	11	$	4	$	15	$	6	$	3	$	9

^a  Includes modified loans that are accruing interest.

^b  Includes all other modified loans, including those that are on nonaccrual status, in foreclosure, or in bankruptcy.

Our recorded investment in troubled debt restructurings on our conventional MPF Loans that occurred during the three and six months ended June 30, 2012, was $4 million and $5 million. These amounts represent both the pre- and post- modification amounts recorded in our statement of condition as of the date the troubled debt restructurings were consummated. The pre- and post- modification amounts are the same as we did not record any write-offs either due to the forgiveness of principal or a direct write-off due to a confirmed loss.

24

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Troubled debt restructurings that were modified during the previous 12 months that subsequently defaulted since the date of the modification were $8 million as of June 30, 2012.

Individually Evaluated Impaired Loans

The following table summarizes the recorded investment, unpaid principal balance, and related allowance of impaired MPF Loans individually assessed for impairment, which includes impaired collateral dependent MPF Loans and troubled debt restructurings. We had no impaired MPF Loans without an allowance for either date.

	June 30, 2012						December 31, 2011
As of	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
Impaired conventional MPF Loans with an allowance	$	197	$	196	$	30	$	204	$	202	$	26

The following table summarizes the average recorded investment of impaired MPF Loans and related interest recognized:

	June 30, 2012				June 30, 2011
For the periods ended	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Three months	$	199	$	2	$	135	$	2
Six months	201		5		127		3

Real Estate Owned

We had $46 million in REO, recorded in other assets, at June 30, 2012, and December 31, 2011.

Term Federal Funds Sold and Term Securities Purchased Under Agreements to Resell

These financing receivables are short-term and the recorded balance approximates fair value. All federal funds sold were repaid according to the contractual terms. Federal Funds are only evaluated for purposes of an allowance for credit losses if the investment is not paid when due.

Securities purchased under agreements to resell are considered collateralized financing arrangements and effectively represent short-term loans with highly rated counterparties. The terms of these loans are structured such that if the market values of the underlying securities decrease below the market value required as collateral, the counterparty must place an equivalent amount of additional securities as collateral or remit an equivalent amount of cash, or the dollar value of the resale agreement will be decreased accordingly. If an agreement to resell is deemed to be impaired, the difference between the fair value of the collateral and the amortized cost of the agreement is charged to earnings. Based upon the collateral held as security, we have determined that no allowance for credit losses was needed for our securities purchased under agreements to resell. All securities purchased under agreements to resell were repaid according to the contractual terms.

25

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 9 – Derivatives and Hedging Activities

Refer to Note 2 - Summary of Significant Accounting Polices in our 2011 Form 10-K for our accounting policies for derivatives.

Managing Credit Risk on Derivative Agreements

We are subject to credit risk due to the risk of nonperformance by counterparties to our derivative agreements. The degree of counterparty risk depends on the extent to which master netting arrangements are included in such contracts to mitigate the risk. We manage counterparty credit risk through credit analysis, collateral requirements and adherence to the requirements set forth in our policies and FHFA regulations. We require collateral agreements on all derivatives that establish collateral delivery thresholds. Additionally, collateral related to derivatives with member institutions includes collateral assigned to us, as evidenced by a written security agreement, and held by the member institution for our benefit. Based on credit analyses and collateral requirements, we do not anticipate any credit losses on our derivative agreements. SeeNote 15 - Fair Value Accounting for discussion regarding our fair value methodology for derivative assets and liabilities, including an evaluation of the potential for the fair value of these instruments to be affected by counterparty credit risk.

Our derivative agreements contain provisions that require us to post additional collateral with our counterparties if there is deterioration in our credit rating, except for those derivative agreements with a zero unsecured collateral threshold for both parties, in which case positions are required to be fully collateralized regardless of credit rating. If our credit rating is lowered by a major credit rating agency, such as Standard and Poor's or Moody’s, we would be required to deliver additional collateral on derivatives in net liability positions. If our credit rating had been lowered from its current rating to the next lower rating, we would have been required to deliver up to an additional $54 million of collateral at fair value to our derivatives counterparties at June 30, 2012.

We transact most of our derivatives with large banks and major broker-dealers. Some of these banks and broker-dealers or their affiliates buy, sell, and distribute consolidated obligations. We are not a derivative dealer and do not trade derivatives for speculative purposes.

26

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

The following table summarizes our derivatives, including cash collateral and related interest where we had the right to reclaim the collateral on derivative assets. The amounts where we had delivered excess collateral on derivative liabilities were insignificant for both periods presented.

	June 30, 2012								December 31, 2011
As of	Notional Amount		Derivative Assets			Derivative Liabilities			Notional Amount		Derivative Assets			Derivative Liabilities
Derivatives in hedge accounting relationships-
Interest rate swaps	$	25,218	$	136		$	2,163		$	28,240	$	203		$	2,099
Interest rate swaptions	—		—			—			370		32			—
Total	25,218		136			2,163			28,610		235			2,099
Derivatives not in hedge accounting relationships-
Interest rate swaps	31,298		903			784			38,159		927			785
Interest rate swaptions	7,290		173			—			4,820		179			—
Interest rate caps or floors	1,913		245			—			1,913		254			—
Mortgage delivery commitments	1,211		13			13			502		4			4
Total	41,712		1,334			797			45,394		1,364			789
Total before adjustments	$	66,930	1,470			2,960			$	74,004	1,599			2,888
Netting adjustments a			(1,393		)	(1,393		)			(1,461		)	(1,461		)
Exposure at fair value b			77			1,567					138			1,427
Cash collateral and related accrued interest			(25		)	(1,497		)			(98		)	(1,221		)
Derivative assets and liabilities			$	52		$	70				$	40		$	206

^a  Amounts represent the effect of legally enforceable master netting agreements that allow us to settle positive and negative positions.

^b  Includes net accrued interest receivable of $7 million as of June 30, 2012, and $13 million as of December 31, 2011.

The following tables present the components of derivatives and hedging activities as presented in the statements of income.

	Three months ended June 30,						Six months ended June 30,
For the periods ending	2012			2011			2012			2011
Fair value hedges -
Interest rate swaps	$	(7	)	$	(1	)	$	(3	)	$	6
Other	—			(2		)	1			(7		)
Fair value hedges - ineffectiveness net gain (loss)	(7		)	(3		)	(2		)	(1		)
Cash flow hedges - ineffectiveness net gain (loss)	—			12			2			14
Economic hedges -
Interest rate swaps	(44		)	(25		)	(46		)	(5		)
Interest rate swaptions	18			(12		)	18			(60		)
Interest rate caps/floors	4			14			(9		)	(10		)
Interest rate futures/TBA	—			—			—			—
Net interest settlements	21			10			40			44
Economic hedges - net gain (loss)	(1		)	(13		)	3			(31		)
Net gains (losses) on derivatives and hedging activities	$	(8	)	$	(4	)	$	3		$	(18	)

27

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Fair Value Hedges

The following table presents, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships and the effect of those derivatives on our net interest income.

	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item			Total Gain (Loss) Ineffectiveness Recognized in Derivatives and Hedging Activities			Effect of Derivatives on Net Interest Income a			Hedge Adjustments Amortized into Net Interest Income b
Three months ended June 30, 2012
Hedged item type -
Available-for-sale securities	$	(113	)	$	109		$	(4	)	$	(33	)	$	—
Advances	(16		)	19			3			(21		)	(1		)
MPF Loans held for portfolio	2			(2		)	—			(1		)	(13		)
Consolidated obligation bonds	31			(37		)	(6		)	42			(7		)
Total	$	(96	)	$	89		$	(7	)	$	(13	)	$	(21	)
Three months ended June 30, 2011
Hedged item type -
Available-for-sale securities	$	(99	)	$	97		$	(2	)	$	(35	)	$	—
Advances	(26		)	29			3			(39		)	(7		)
MPF Loans held for portfolio	(5		)	2			(3		)	(2		)	(11		)
Consolidated obligation bonds	152			(153		)	(1		)	86			(9		)
Total	$	22		$	(25	)	$	(3	)	$	10		$	(27	)
Six months ended June 30, 2012
Hedged item type -
Available-for-sale investments	$	(77	)	$	75		$	(2	)	$	(65	)	$	—
Advances	(8		)	14			6			(45		)	(24		)
MPF Loans held for portfolio	1			—			1			(2		)	(27		)
Consolidated obligation bonds	7			(14		)	(7		)	80			(16		)
Total	$	(77	)	$	75		$	(2	)	$	(32	)	$	(67	)
Six months ended June 30, 2011
Hedged item type -
Available-for-sale investments	$	(84	)	$	82		$	(2	)	$	(67	)	$	—
Advances	17			(10		)	7			(86		)	(9		)
MPF Loans held for portfolio	(6		)	(2		)	(8		)	(5		)	(25		)
Consolidated obligation bonds	129			(127		)	2			160			(18		)
Total	$	56		$	(57	)	$	(1	)	$	2		$	(52	)

^a  Represents the effect of net interest settlements attributable to existing derivative hedging instruments on net interest income. The effect of derivatives on net interest income is included in the interest income/expense line item of the respective hedged item type.

^b  Amortization of hedge adjustments is included in the interest income/expense line item of the respective hedged item type.

28

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Cash Flow Hedges

The following table presents our gains (losses) on our cash-flow hedging relationships. In the tables below, in cases where amounts are insignificant in the aggregate, we don't report a balance. See the Statements of Comprehensive Income on page 5 for more details on the effect of cash-flow hedges on AOCI.

	Effective Portion Recognized in AOCI Unrealized Gains (Losses)			Effective Portion Reclassified to Interest Income or Interest Expense Gain (Loss)			Ineffective Portion Recognized in Derivatives and Hedging Activities Gain (Loss)			Effect on Net Interest Income Gain (Loss) a
Three months ended June 30, 2012
Advances - interest rate floors	$	—		$	4		$	—	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(2		)	—			—
Consolidated obligation discount notes - interest rate swaps	(110		)	(1		)	—			(68		)
Consolidated obligation bonds - interest rate swaps	—			(1		)	—			—
Total	$	(110	)	$	—		$	—		$	(68	)
Three months ended June 30, 2011
Advances - interest rate floors	$	—		$	9		$	12	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(4		)	—			—
Consolidated obligation discount notes - interest rate swaps	(128		)	(1		)	—			(80		)
Consolidated obligation bonds - interest rate swaps	—			(1		)	—			—
Total	$	(128	)	$	3		$	12		$	(80	)
Six months ended June 30, 2012
Advances - interest rate floors	$	—		$	8		$	—	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(4		)	—			—
Consolidated obligation discount notes - interest rate swaps	(58		)	(2		)	2			(135		)
Consolidated obligation bonds - interest rate swaps	—			(3		)	—			—
Total	$	(58	)	$	(1	)	$	2		$	(135	)
Six months ended June 30, 2011
Advances - interest rate floors	$	—		$	22		$	12	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(8		)	—			—
Consolidated obligation discount notes - interest rate swaps	(53		)	(2		)	2			(161		)
Consolidated obligation bonds - interest rate swaps	—			(2		)	—			—
Total	$	(53	)	$	10		$	14		$	(161	)

^a  Represents the effect of net interest settlements attributable to open derivative hedging instruments on net interest income. The effect of     derivatives on net interest income is included in the interest income/expense line item of the respective hedged item type.

^b  Represents the recognition of previously deferred cash flow hedge adjustments related to advances in cash flow hedge relationships that were prepaid during the period.

There were no amounts reclassified from AOCI into earnings for the periods presented as a result of the discontinuance of cash-flow hedges because the original forecasted transactions failed to occur by the end of the originally specified time period or within a two-month period thereafter. The deferred net gains on derivative instruments in AOCI that are expected to be reclassified to earnings during the next twelve months were $9 million as of June 30, 2012. The maximum length of time over which we are hedging our exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, is 8 years.

29

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 10 – Consolidated Obligations

The following table presents our consolidated obligation bonds, for which we are the primary obligor, including callable bonds that are redeemable in whole, or in part, at our discretion on predetermined call dates.

As of June 30, 2012	Contractual Maturity		Weighted Average Interest Rate		Next Maturity or Call Date
Due in one year or less	$	9,132	2.64	%	$	24,403
One to two years	10,579		2.27	%	6,824
Two to three years	3,255		2.57	%	1,778
Three to four years	3,906		3.70	%	2,786
Four to five years	4,015		2.17	%	1,250
Thereafter	9,047		2.86	%	2,893
Total par value	$	39,934	2.64	%	$	39,934

The following table presents our consolidated obligation discount notes for which we are the primary obligor. All are due in one year or less.

	Carrying Value		Par Value		Weighted Average Interest Rate
As of June 30, 2012	$	23,439	$	23,443	0.05	%
As of December 31, 2011	25,404		25,411		0.05	%

The following table presents consolidated obligation bonds outstanding by call feature:

As of	June 30, 2012			December 31, 2011
Noncallable	$	22,077		$	24,479
Callable	17,857			15,485
Total par value	39,934			39,964
Bond premiums (discounts), net	16			19
Hedging adjustments	(74		)	(104		)
Fair value option adjustments	(4		)	1
Total consolidated obligation bonds	$	39,872		$	39,880

30

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 11 – Subordinated Notes

Our subordinated notes outstanding mature on June 13, 2016. The subordinated notes are not obligations of, and are not guaranteed by, the United States government or any FHLBs other than us. The subordinated notes are unsecured obligations and rank junior in priority of payment to our senior liabilities. Senior liabilities include all of our existing and future liabilities, such as deposits, consolidated obligations for which we are the primary obligor and consolidated obligations of the other FHLBs for which we are jointly and severally liable. For further description of our subordinated notes see Note 15 - Subordinated Notes in our 2011 Form 10-K.

Prior to conversion to our new capital structure, we were allowed to include a percentage of the outstanding principal amount of the subordinated notes (the Designated Amount) in determining compliance with our regulatory capital and minimum regulatory leverage requirements, maximum permissible holdings of MBS and unsecured credit, subject to 20% annual phase-outs that commenced June 14, 2011. At December 31, 2011, the Designated Amount of subordinated notes was $800 million.

After converting our capital stock as of January 1, 2012, we no longer include the Designated Amount of subordinated notes in calculating our maximum permissible holdings of MBS and unsecured credit or in determining compliance with our minimum regulatory capital requirements now that we are subject to the post-conversion capital requirements discussed in Note 13 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS).

Note 12 - Regulatory Actions

On April 18, 2012, the FHFA terminated the Consent Order to Cease and Desist (the C&D Order) that we entered into with the Federal Housing Finance Board in October 2007. The C&D Order placed several requirements on us, including among other things, restrictions on the repurchase and redemption of capital stock, prior approval of dividend declarations and submission of a revised Capital Plan, as further described in Note 16 - Regulatory Actions in our 2011 Form 10-K.

In connection with operating the Bank after termination of the C&D Order, our Board of Directors adopted a resolution on March 30, 2012, which included the following:

• As required by the FHFA in connection with the approval of our Capital Plan, we will continue to obtain FHFA approval for any new investments that have a term to maturity in excess of 270 days until such time as our MBS portfolio is less than three times our total regulatory capital and our advances represent more than 50% of our total assets.

• In addition to the requirements to declare and pay dividends in accordance with our Retained Earnings and Dividend Policy, dividends paid on either Class B-1 stock or Class B-2 stock in any given quarter must not exceed the average of three-month LIBOR for that quarter on an annualized basis. We may, with approval of the Board, request approval from the FHFA to pay dividends in excess of this limit in advance of a coming calendar year.

• We must maintain retained earnings at a level equal to a “floor” amount, which is the greater of our retained earnings as of each immediately preceding year-end or $1.321 billion, and will not pay a dividend without prior written approval by the FHFA if the payment of such dividend would cause our retained earnings to be reduced below the “floor” amount. Our retained earnings at December 31, 2011, were $1.321 billion.

• We will continue to execute and comply with our plan to repurchase excess capital stock of members over a period of time (Repurchase Plan) as approved by the FHFA in December 2011. Once the Repurchase Plan terminates, we will continue to repurchase excess capital stock held by members on a quarterly basis but only if we maintain compliance with the financial and capital thresholds set forth in the Repurchase Plan, as previously disclosed in Note 17 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS) in our 2011 Form 10-K.

Our Board may not modify or terminate this resolution without written consent by the Director of the FHFA.

31

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 13 – Capital Stock and Mandatorily Redeemable Capital Stock (MRCS)

Capital Rules

For capital rules that were in effect prior to our conversion to our new Capital Plan on January 1, 2012, see Capital Rules prior to Conversion to New Capital Structure on page F-53 in our 2011 Form 10-K.

Under the new Capital Plan, which became effective January 1, 2012, our stock consists of two sub-classes of stock, Class B-1 stock and Class B-2 stock (together, Class B stock), both with a par value of $100 and redeemable on five years' written notice, subject to certain conditions.

Under the Capital Plan, each member is required to own capital stock in an amount equal to the greater of a membership stock requirement or an activity stock requirement, as further discussed in Capital Rules after Conversion to New Capital Structure on page F-53 in our 2011 Form 10-K. Membership stock requirements will continue to be recalculated annually, whereas the activity stock requirement will apply on a continuing basis.

We may only redeem or repurchase capital stock from a member if, following the redemption or repurchase, the member will continue to meet its minimum investment requirement and we remain in compliance with our regulatory capital requirements. As of April 18, 2012, we are no longer required to obtain FHFA approval for such redemptions and repurchases. However, the Board of Directors has adopted a resolution which may not be amended without FHFA consent governing our repurchases of excess stock. Pursuant to that resolution, we are required to continue making quarterly repurchases of excess capital stock from members on a pro rata basis, subject to satisfaction of certain conditions. For as long as we continue to make such quarterly repurchases, we anticipate that individual members' requests for repurchase of excess Class B-2 Stock will not be fulfilled. Upon request we will continue to repurchase excess Class B-1 Stock that is in excess of a member's capital stock “floor.” See Note 12 - Regulatory Actions.

During the three and six months ended June 30, 2012, we repurchased excess capital stock (including capital stock reclassified as MRCS) totaling $150 million and $650 million in accordance with our Repurchase Plan as discussed in Repurchase of Excess Capital Stock on page F-56 in our 2011 10-K. At June 30, 2012, we had remaining excess capital stock of $433 million compared to $1.1 billion at December 31, 2011.

Our Repurchase Plan terminated by its terms effective upon our most recent repurchase of excess capital stock on May 15, 2012. However, pursuant to the resolution adopted our Board of Directors as discussed in Note 12 - Regulatory Actions, we continue to repurchase excess capital stock held by members if we maintain compliance with financial and capital thresholds set forth in the Repurchase Plan as discussed in Repurchase of Excess Capital Stock on page F-56 in our 2011 Form 10-K. On July 16, 2012, following our assessment that we met the thresholds for repurchase based on the financial results for the second quarter of 2012, we notified members of another repurchase opportunity and the process for requesting repurchase. In accordance with that process, we announced that we would repurchase excess capital stock of $150 million on August 15, 2012.

Capital Concentration

As of June 30, 2012, BMO Harris Bank N. A. had $254 million, or 14%, of our total capital stock outstanding. No other members had capital stock exceeding 10%.

Minimum Capital Requirements

After we implemented our new Capital Plan on January 1, 2012, we are required by regulation to maintain:

• permanent capital equal to the sum of our (i) credit risk capital requirement, (ii) market risk capital requirement, and (iii) operations risk capital requirement, all of which are calculated in accordance with rules and regulations of the FHFA. Permanent capital includes our retained earnings plus the amount paid in for our Class B stock, including Class B stock classified as mandatorily redeemable; and

• a minimum ratio of total regulatory capital (which includes permanent capital plus any general allowance for losses) to total assets of 4.0%; and

• a minimum ratio of leverage capital (which includes permanent capital multiplied by 1.5 plus any general allowance for losses) to total assets of 5.0%.

Total regulatory capital and permanent capital do not include accumulated other comprehensive income (loss). For further discussion of these minimum capital requirements, see Minimum Capital Requirements after Conversion to New Capital Structure on page F-54 of our 2011 Form 10-K.

32

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

The following table details our minimum capital requirements at June 30, 2012, under our new Capital Plan:

	June 30, 2012
	Required			Actual
Risk-based capital	$	1,501		$	3,364
Capital-to-assets ratio (regulatory)	4.00		%	4.90		%
Regulatory capital	$	2,746		$	3,364
Leverage capital-to-assets ratio (regulatory)	5.00		%	7.35		%
Leverage capital	$	3,432		$	5,046

Detailed components of our Risk-Based Capital were as follows:

	June 30, 2012
Credit risk	$	1,126
Market risk	29
Operations risk	346
Total risk-based capital requirement	$	1,501
Actual permanent capital	$	3,364

In addition, under the FHFA regulation on capital classifications and critical capital levels for the FHLBs, we are adequately capitalized.

At December 31, 2011, prior to conversion to our new Capital Plan, we were subject to a minimum regulatory leverage limit as further discussed in Minimum Capital Requirements prior to Conversion to New Capital Structure on page F-54 in our 2011 Form 10-K. The following table summarizes our regulatory capital requirements as a percentage of total assets at December 31, 2011, before the conversion to our new Capital Plan.

		Regulatory Capital plus Designated Amount of Subordinated Notes
		Requirement in Effect		Actual
	Non-Mortgage Assets	Ratio	Amount	Ratio	Amount
December 31, 2011	19.19%	4.76%	$3,392	6.35%	$4,527

Mandatorily Redeemable Capital Stock

We reclassify capital stock from equity to mandatorily redeemable capital stock (MRCS)under conditions as further described in Mandatorily Redeemable Capital Stock on page F-55 in our 2011 Form 10-K. As of April 18, 2012, we are no longer required to obtain FHFA approval for such redemptions and repurchases, as further discussed in Note 12 - Regulatory Actions.

The following table shows a reconciliation of the dollar amounts in MRCS, along with the number of current and former members owning the related capital stock at period end:

June 30, 2012	Dollar Amount
MRCS at beginning of year	$	4
Capital stock reclassified to MRCS	32
Redemption of MRCS	(26		)
MRCS at end of period a	$	10
Number of stockholders holding MRCS at period end	10

^a  All MRCS outstanding at the end of the period are redeemable in five years.

33

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 14 - Accumulated Other Comprehensive Income (Loss)

The following table summarizes the income (loss) in AOCI for the periods indicated:

	Net Unrealized on AFS		Non-credit OTTI on  AFS			Net Unrealized on HTM			Non-credit OTTI on HTM			Net Unrealized on Cash Flow Hedges			Post-Retirement Plans		Total
Balance, December 31, 2010	$	748	$	(34	)	$	(8	)	$	(630	)	$	(561	)	$	2	$	(483	)
Net change in the period	157		11			1			95			(77		)	—		187
Balance, June 30, 2011	$	905	$	(23	)	$	(7	)	$	(535	)	$	(638	)	$	2	$	(296	)
Balance, December 31, 2011	$	1,113	$	(26	)	$	(5	)	$	(466	)	$	(1,049	)	$	2	$	(431	)
Net change in the period	212		5			2			50			(59		)	—		210
Balance, June 30, 2012	$	1,325	$	(21	)	$	(3	)	$	(416	)	$	(1,108	)	$	2	$	(221	)

34

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 15- Fair Value Accounting

Fair Value Measurement

We record trading securities, AFS securities, derivative assets, and derivative liabilities at fair value. We also carry advances and consolidated obligations at fair value when we elect the fair value option for them. The fair value amounts recorded on the statements of condition and presented in the note disclosures have been determined by us using available market information and our judgment of appropriate valuation methods. These estimates are based on pertinent information available to us as of the dates presented. Estimates of the fair value of advances with options, mortgage instruments, derivatives with embedded options and consolidated obligation bonds with options using the methods described below, and other methods, 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 estimated fair value. Although we believe our estimated fair values are reasonable, there are inherent limitations in any valuation technique. 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. These estimates are susceptible to material near term changes because they are made as of a specific point in time.

Fair Value Hierarchy

The fair value hierarchy is used to prioritize the valuation techniques as well as the inputs used to measure fair value for assets and liabilities carried at fair value on the statements of condition. The fair value hierarchy requires us 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.

Outlined below is the application of the fair value hierarchy to our financial assets and financial liabilities that are carried at fair value or disclosed in the notes to the financial statements:

Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that we can access at the measurement date.

Level 2inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. If the asset or liability has a specified (contractual) term, a Level 2 input must be observable for substantially the full term of the asset or liability. Level 2 inputs include the following:

a. Quoted prices for similar assets or liabilities in active markets

b. Quoted prices for identical or similar assets, or liabilities, in markets that are not active

c. Inputs other than quoted prices, that are observable for the asset or liability, for example:

1. Interest rates and yield curves observable at commonly quoted intervals

2. Implied volatilities

3. Credit spreads

d. Market-corroborated inputs.

Level 3 inputs are unobservable inputs for the asset or liability. Unobservable inputs are used to measure fair value to the extent that relevant observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date. However, the fair value measurement objective remains the same, that is, an exit price at the measurement date from the perspective of a market participant that holds the asset or owes the liability. Therefore, unobservable inputs shall reflect the assumptions that market participants would use when pricing the asset or liability, including assumptions about risk.

For instruments carried at fair value, we review the fair value hierarchy classifications on a quarterly basis. Changes in the observability of the valuation attributes may result in a reclassification of financial assets or liabilities from one level to another. Such reclassifications are reported as transfers in/out at fair value as of the beginning of the quarter in which the changes occur. We had no such transfers for the periods presented.

35

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Valuation Techniques and Significant Inputs

A description of the valuation techniques and significant inputs is disclosed in Note 20 - Fair Value Accounting in our 2011 Form 10-K. There have been no significant changes in our valuation techniques since then.

Unobservable Level 3 significant inputs of financial instruments that are carried at fair value in our statements of condition are disclosed below.

Private-Label Residential MBS

The significant unobservable inputs used by third party pricing services in the fair value measurement of our private-label residential MBS are prepayment rates, probability of default, and loss severity in the event of default. Significant increases (decreases) in any of those inputs in isolation may result in a significantly lower (higher) fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity and a directionally opposite change in the assumption used for prepayment rates. The table below provides the investment securities in which fair value is provided to us by third party pricing services.

				Range of Pricing Services Values
As of June 30, 2012	Portfolios	Fair Value		Minimum		Maximum
Private-label residential MBS - OTTI	AFS	$	62	$	56	$	68
Private-label residential MBS - OTTI	HTM	2		2		2

Derivative Assets

The following table shows the range of values for our derivative assets that are carried at fair value under a fair value hedge strategy on our statements of condition using Level 3 significant inputs.

As of June 30, 2012	Fair Value		Minimum		Maximum
Derivative Assets	$	36	$	36	$	36

Consolidated obligations

The following table shows the applicable curve of our consolidated obligations that are carried at fair value under a fair value hedge strategy on our statements of condition using Level 3 significant inputs.

As of June 30, 2012	Significant Inputs Curve	Fair Value
Non-callable consolidated obligation bonds	CO	$	85

Impaired MPF Loans and Real Estate Owned

The following table shows the fair values of our impaired MPF Loans and Real Estate Owned which are valued using Level 3 inputs on a nonrecurring basis at the time of impairment using broker price opinions. If a current broker price opinion is not available, we estimate fair value using internal discounted cash flow models based on current actual loss severity rates we have incurred on sales, excluding any estimated selling costs. See Note 8 - Allowance for Credit Losses for further details. Significant increases (decreases) in the loss severity rate input in isolation may result in a significantly lower (higher) fair value measurement.

As of June 30, 2012	Fair Value
Impaired MPF Loans	$	184
Real estate owned written down to fair value during the quarter	14

36

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Fair Value Estimates for Financial Instruments

The following tables are a summary of fair value estimates and for the current period table the related level in the fair value hierarchy for financial instruments. It excludes non-financial items, for example, real estate owned. The carrying amounts in the following tables are recorded in the statements of condition under the indicated captions. These tables do not represent an estimate of the overall market value of us as a going concern; as they do not take into account future business opportunities and future net profitability of assets and liabilities. 

June 30, 2012
			Fair Value
	Carrying  Value		Total		Level 1		Level 2			Level 3			Netting Adjustment/ Cash Collateral a
Financial Assets
Cash and due from banks	$	24	$	24	$	24	$	—		$	—		$	—
Federal Funds sold	1,697		1,697		—		1,697			—			—
Securities purchased under agreements to resell	2,100		2,100		—		2,100			—			—
Trading securities	2,046		2,046		—		2,046			—			—
Available-for-sale securities	23,896		23,896		—		23,834			62			—
Held-to-maturity securities	10,597		11,336		—		9,605			1,731			—
Advances	15,797		16,093		—		16,093			—			—
MPF Loans held in portfolio, net	12,162		13,110		—		12,926			184			—
Accrued interest receivable	135		135		—		135			—			—
Derivative assets	52		52		—		1,434		b	36		b	(1,418		)
Financial Liabilities
Deposits	$	727	$	727	$	—	$	727		$	—		$	—
Securities sold under agreements to repurchase	—		—		—		—			—			—
Consolidated obligations -
Discount notes	23,439		23,439		—		23,439			—			—
Bonds	39,872		41,872		—		41,787			85		c	—
Accrued interest payable	171		171		—		171			—			—
Mandatorily redeemable capital stock	10		10		10		—			—			—
Derivative liabilities	70		70		—		2,960			—			(2,890		)
Subordinated notes	1,000		1,138		—		1,138		b	—			—

^a  Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

^b  Our derivative assets are, in part, secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

^c  Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

37

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

	December 31, 2011
	Carrying Value		Fair Value
Financial Assets
Cash and due from banks	$	1,002	$	1,002
Federal Funds sold	950		950
Securities purchased under agreements to resell	825		825
Trading securities	2,935		2,935
Available-for-sale securities	24,316		24,316
Held-to-maturity securities	11,477		12,131
Advances	15,291		15,663
MPF Loans held in portfolio, net	14,118		15,177
Accrued interest receivable	153		153
Derivative assets	40		40
Financial Liabilities
Deposits	$	648	$	648
Securities sold under agreements to repurchase	400		400
Consolidated obligations -
Discount notes	25,404		25,404
Bonds	39,880		42,163
Accrued interest payable	203		203
Mandatorily redeemable capital stock	4		4
Derivative liabilities	206		206
Subordinated notes	1,000		1,127

38

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents, for each hierarchy level, our assets and liabilities that are measured at fair value on the statements of condition:

As of June 30, 2012	Level 1		Level 2				Level 3				Netting Adjustment a			Total
Assets -
Trading securities:
U.S. Government & other government related	$	—	$	1,888			$	—			$	—		$	1,888
GSE residential MBS	—		155				—				—			155
Governmental-guaranteed residential MBS	—		3				—				—			3
Total Trading Securities	—		2,046				—				—			2,046
AFS securities:
U.S. Government & other government related	—		820				—				—			820
FFELP ABS	—		7,870				—				—			7,870
GSE residential MBS	—		12,175				—				—			12,175
Government-guaranteed residential MBS	—		2,969				—				—			2,969
Private-label residential MBS	—		—				62				—			62
Total AFS Securities	—		23,834				62				—			23,896
Advances	—		9				—				—			9
Derivative assets	—		1,434			b	36			b	(1,418		)	52
Total assets at fair value	$	—	$	27,323			$	98			$	(1,418	)	$	26,003
Level 3 as a percent of total assets at fair value							0.4		%
Liabilities -
Consolidated obligation discount notes	$	—	$	(4,135	)		$	—			$	—		$	(4,135	)
Consolidated obligation bonds	—		(7,017		)		(85		)	c	—			(7,102		)
Derivative liabilities	—		(2,960		)	b	—				2,890			(70		)
Total liabilities at fair value	$	—	$	(14,112	)		$	(85	)		$	2,890		$	(11,307	)
Level 3 as a percent of total liabilities at fair value							0.8		%

^a  Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

^b  Our derivative assets are, in part secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

^c  Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

39

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

As of December 31, 2011	Level 1		Level 2				Level 3				Netting Adjustment a			Total
Assets -
Trading securities:
U.S. Government & other government related	$	—	$	2,737			$	—			$	—		$	2,737
GSE residential MBS	—		195				—				—			195
Governmental-guaranteed residential MBS	—		3				—				—			3
Total Trading Securities	—		2,935				—				—			2,935
AFS securities:
U.S. Government & other government related	—		1,001				—				—			1,001
FFELP ABS	—		8,159				—				—			8,159
GSE residential MBS	—		12,132				—				—			12,132
Government-guaranteed residential MBS	—		2,961				—				—			2,961
Private-label residential MBS	—		—				63				—			63
Total AFS Securities	—		24,253				63				—			24,316
Advances	—		9				—				—			9
Derivative assets	—		1,562			b	37			b	(1,559		)	40
Total assets at fair value	$	—	$	28,759			$	100			$	(1,559	)	$	27,300
Level 3 as a percent of total assets at fair value							0.4		%
Liabilities -
Consolidated obligation discount notes	$	—	$	(11,466	)		$	—			$	—		$	(11,466	)
Consolidated obligation bonds	—		(2,631		)		(87		)	c	—			(2,718		)
Derivative liabilities	—		(2,888		)	b	—				2,682			(206		)
Total liabilities at fair value	$	—	$	(16,985	)		$	(87	)		$	2,682		$	(14,390	)
Level 3 as a percent of total liabilities at fair value							0.6		%

^a  Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

^b  Our derivative assets are, in part, secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

^c  Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

40

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Level 3 Disclosures for all Assets and Liabilities that are Measured at Fair Value on a Recurring Basis

The following table presents a reconciliation of all assets and liabilities that are measured at fair value on the statements of condition using significant unobservable inputs (Level 3):

	Level 3 Assets/Liabilities
	Available-For-Sale Private-Label MBS			Derivative Assets Interest-Rate Related			Consolidated Obligation Bonds
At December 31, 2011	$	63		$	37		$	(87	)
Gains (losses) realized and unrealized:
Change in fair value included in earnings in derivatives and hedging activities	1			(1		)	2
Included in net change in fair value on OTTI AFS securities in OCI	5			—			—
Paydowns and settlements	(7		)	—			—
At June 30, 2012	$	62		$	36		$	(85	)
Total unrealized gains (losses) included in earnings attributable to instruments still held at period end	$	1		$	(1	)	$	2
At December 31, 2010	$	76		$	29		$	(78	)
Gains (losses) realized and unrealized:
Change in fair value included in earnings in derivatives and hedging activities	—			—			—
Included in net change in fair value on OTTI AFS securities in OCI	5			—			—
Paydowns and settlements	(8		)	—			—
At June 30, 2011	$	73		$	29		$	(78	)
Total unrealized gains (losses) included in earnings attributable to instruments still held at period end	$	—		$	—		$	—

Assets Measured at Fair Value on a Nonrecurring Basis

The table below presents assets that are measured at fair value on a nonrecurring basis as of the dates shown. These assets are subject to being measured at fair value as a result of becoming impaired during the reporting period or in the case of REO when fair value declines during the reporting period. Held-to-maturity, private-label residential MBS are measured at fair value using the same methodology and significant assumptions utilized for available-for-sale private-label residential MBS. If available, broker price opinions are used to measure impaired MPF Loans or REO. If a current broker price opinion is not available, we estimate fair value based on current actual loss severity rates we have incurred on sales, excluding any estimated selling costs. See Note 8 - Allowance for Credit Losses for further details. Significant increases (decreases) in the loss severity rate input in isolation may result in a significantly lower (higher) fair value measurement.

	June 30, 2012						December 31, 2011
	Level 1		Level  2		Level  3		Level 1		Level  2		Level  3
Held-to-maturity - Private-label residential MBS	$	—	$	—	$	2	$	—	$	—	$	9
Impaired MPF Loans	—		—		184		—		—		193
Real estate owned	—		—		14		—		—		16
Total non-recurring assets	$	—	$	—	$	200	$	—	$	—	$	218

41

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Fair Value Option

We elected the fair value option for advances, discount notes, and short-term consolidated obligation bonds for which hedge accounting treatment may not be achieved. Specifically, hedge accounting may not be achieved in cases where it may be difficult to pass prospective or retrospective effectiveness testing under derivative hedge accounting guidance even though the interest rate swaps used to hedge these financial instruments have matching terms. Accordingly, electing the fair value option allows us to better match the change in fair value of the advance, discount note, and short-term consolidated obligation bonds with the interest rate swap economically hedging it.

Under the fair value option, fair value is used for both the initial and subsequent measurement of the designated assets and liabilities, with the changes in fair value recognized in non-interest gain (loss). Interest income and interest expense carried on other financial assets or liabilities carried at fair value is recognized under the interest method based solely on the contractual amount of interest due or unpaid. Any transaction fees or costs are immediately recognized into other non-interest gain (loss) or other non-interest expense.

The following tables summarize the activity related to financial assets and liabilities for which we elected the fair value option: 

	June 30, 2012								June 30, 2011
			Consolidated Obligation								Consolidated Obligation
	Advances		Bonds			Discount Notes			Advances		Bonds			Discount Notes
For the three months ended
Balance beginning of period	$	9	$	(3,132	)	$	(9,268	)	$	6	$	(5,479	)	$	(2,501	)
New transactions elected for fair value option	—		(6,565		)	—			3		(3,300		)	(150		)
Maturities and extinguishments	—		2,680			5,136			—		4,705			1,450
Net gain (loss) on instruments held at fair value	—		2			—			—		(8		)	—
Change in accrued interest and other	—		(2		)	(3		)	—		9			(1		)
Balance end of period	$	9	$	(7,017	)	$	(4,135	)	$	9	$	(4,073	)	$	(1,202	)
For the six months ended
Balance beginning of period	$	9	$	(2,631	)	$	(11,466	)	$	4	$	(9,425	)	$	(4,864	)
New transactions elected for fair value option	—		(8,890		)	—			5		(4,159		)	(150		)
Maturities and extinguishments	—		4,500			7,336			—		9,519			3,816
Net gain (loss) on instruments held at fair value	—		6			2			—		(13		)	—
Change in accrued interest and other	—		(2		)	(7		)	—		5			(4		)
Balance end of period	$	9	$	(7,017	)	$	(4,135	)	$	9	$	(4,073	)	$	(1,202	)

For items recorded under the fair value option, the related contractual interest income and contractual interest expense is recorded as part of net interest income on the statements of income. The remaining change in fair value for instruments in which the fair value option has been elected is recorded in non-interest gain (loss) on instruments held under fair value option in the statements of income. We determined that no adjustments to the fair values of our instruments recorded under the fair value option for instrument-specific credit risk were necessary as of the dates presented.

The following table reflects the difference between the aggregate unpaid principal balance (UPB) outstanding and the aggregate fair value for advances and consolidated obligation bonds for which the fair value option has been elected. None of the advances were 90 days or more past due or on nonaccrual status.

	June 30, 2012									December 31, 2011
As of	Unpaid Principal Balance			Fair Value			Fair Value Over (Under) UPB			Unpaid Principal Balance			Fair Value			Fair Value Over (Under) UPB
Advances	$	9		$	9		$	—		$	9		$	9		$	—
Consolidated obligation bonds	(7,020		)	(7,017		)	(3		)	(2,630		)	(2,631		)	1
Consolidated obligation discount notes	(4,135		)	(4,135		)	—			(11,465		)	(11,466		)	1

42

Federal Home Loan Bank of Chicago

Notes to Financial Statements - (Unaudited)

(Dollars in millions except per share amounts unless otherwise indicated)

Note 16 – Commitments and Contingencies

The following table shows our commitments outstanding but not yet incurred or recorded in our statements of condition.

As of	June 30, 2012						December 31, 2011
	Expire within one year		Expire after one year		Total		Expire within one year		Expire after one year		Total
Unsettled consolidated obligation bonds	$	3,815	$	—	$	3,815	$	150	$	—	$	150
Member standby letters of credit	286		281		567		296		273		569
Housing authority standby bond purchase agreements	70		396		466		44		282		326
MPF Xtra mortgage purchase commitments which will be concurrently resold to Fannie Mae	603		—		603		250		—		250
MPF Loan mortgage purchase commitments for portfolio	5		—		5		1		—		1
Advance commitments	243		212		455		—		—		—
Total	$	5,022	$	889	$	5,911	$	741	$	555	$	1,296

Note 17 – Transactions with Members and Other FHLBs

Related Parties

We are a member-owned cooperative. We define related parties as members that own 10% or more of our capital stock or members whose officers or directors also serve on our Board of Directors. Capital stock ownership is a prerequisite to transacting any member business with us. Members and former members own all of our capital stock.

We conduct our advances business almost exclusively with members. Therefore, in the normal course of business, we extend credit to members whose officers and directors may serve on our Board of Directors. We extend credit to members whose officers or directors may serve as our directors on market terms that are no more favorable to them than the terms of comparable transactions with other members who are not considered related parties. In addition, we may purchase short-term investments, Federal Funds, and MBS from members (or affiliates of members). All investments are market rate transactions and all MBS are purchased through securities brokers or dealers. Derivative transactions with members and affiliates are executed at market rates.

Members

The table below summarizes balances we had with our members as defined above as related parties (including their affiliates) as reported in the statements of condition as of the dates indicated. Members represented in these tables may change between periods presented, to the extent that our related parties change, based on changes in the composition of our Board membership.

	June 30, 2012		December 31, 2011
Assets - Advances	$	2,513	$	3,515
Liabilities - Deposits	83		69
Equity - Capital Stock	270		399

Other FHLBs

Material amounts of transactions with other FHLBs, if any, are parenthetically identified on the face of our Financial Statements.

43

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

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

Selected Financial Data

As of or for the three months ended	June 30, 2012			March 31, 2012			December 31, 2011				September 30, 2011			June 30, 2011
Selected statements of condition data
Total investments a	$	40,336		$	40,182		$	40,503			$	43,142		$	40,560
Advances	15,797			14,739			15,291				14,294			17,315
MPF Loans held in portfolio	12,210			13,181			14,163				15,246			16,114
Allowance for credit losses	(48		)	(49		)	(45		)		(41		)	(39		)
Total assets	68,641			68,908			71,255				73,251			77,078
Consolidated obligations -
Discount notes	23,439			22,424			25,404				19,830			16,619
Bonds	39,872			41,048			39,880				45,880			52,535
Total consolidated obligations, net	63,311			63,472			65,284				65,710			69,154
Mandatorily redeemable capital stock	10			14			4				530			533
Capital stock	1,850			1,908			2,402				2,390			2,352
Total retained earnings	1,504			1,436			1,321				1,305			1,165
Accumulated other comprehensive income (loss)	(221		)	(387		)	(431		)		(373		)	(296		)
Total capital	3,133			2,957			3,292				3,322			3,221
Other selected data at period end
MPF Xtra loan volume funded - total system	$	1,334		$	1,170		$	1,281			$	768		$	336
MPF Xtra loan volume funded - Chicago PFIs	709			683			775				494			220
MPF Xtra loans outstanding b	8,630			7,863			7,234				6,652			6,083
Regulatory capital to assets ratio c	4.90		%	4.87		%	6.35		%		6.86		%	6.29		%
Market value of equity to book value of equity	97		%	94		%	90		%		92		%	95		%
All FHLBs consolidated obligations outstanding (par)	$	685,195		$	658,015		$	691,868			$	696,606		$	727,475
Number of members	767			767			767				766			764
Total employees (full and part time)	312			301			296				300			304
Total investments as a percent of total assets	59		%	58		%	57		%		59		%	53		%
Advances as a percent of total assets	23		%	21		%	21		%		20		%	22		%
MPF Loans as a percent of total assets	18		%	19		%	20		%		21		%	21		%
Selected statements of income data
Net interest income before provision for credit losses	$	138		$	159		$	148			$	134		$	130
Provision for credit losses	2			6			7				3			3
OTTI (loss), credit portion	(14		)	(1		)	(11		)		(14		)	(23		)
Other non-interest gain (loss) excluding OTTI	(13		)	7			(23		)		75			(20		)
Non-interest expense	32			30			83			d	36			29
Net income	69			116			16				141			41
Cash dividends	1			1			—			*	1			1
Selected annualized ratios and data
Return on average assets - Quarter	0.39		%	0.66		%	0.09		%		0.75		%	0.20		%
Return on average assets - Year to date	0.52		%	0.66		%	0.28		%		0.34		%	0.16		%
Return on average equity - Quarter	9.28		%	15.93		%	2.07		%		17.45		%	5.20		%
Return on average equity - Year to date	12.57		%	15.93		%	7.22		%		8.92		%	4.40		%
Average equity to average assets	4.21		%	4.11		%	4.21		%		4.31		%	3.90		%
Non-interest expense to average assets	0.18		%	0.17		%	0.45		%		0.19		%	0.14		%
Net yield on interest-earning assets	0.80		%	0.91		%	0.82		%		0.73		%	0.65		%
Return on average Regulatory Capital spread to three month LIBOR index	7.76		%	12.63		%	1.10		%		13.28		%	3.76		%
Dividend payout ratio	1.92		%	0.52		%	3.56		%		0.41		%	1.43		%

^*  Less than $1 million

^a  Total investments includes investment securities, Federal Funds sold, and securities purchased under agreements to resell.

^b  MPF Xtra outstanding loans are not held on our statements of condition. MPF Xtra loans purchased from PFIs are concurrently sold to Fannie Mae. See MPF Program Design beginning on page 10 in our 2011 Form 10-K.

^c  Effective January 1, 2012, we implemented a new Capital Plan that resulted in a change to the calculation of our regulatory capital to assets ratio. See Note 13 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS) to the financial statements in this Form 10-Q.

^d  December 31, 2011, non-interest expense included an additional $50 million charge for AHP. See Note 13 - Affordable Housing Program (AHP) to the financial statements in our 2011 Form 10-K.

44

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Forward-Looking Information

Statements contained in this report, including statements describing the objectives, projections, estimates, or future predictions of management, may be “forward-looking statements.” These statements may use forward-looking terminology, such as “anticipates,” “believes,” “expects,” “could,” “estimates,” “may,” “should,” “will,” their negatives, or other variations of these terms. We caution that, by their nature, forward-looking statements involve risks and uncertainties related to our operations and business environment, all of which are difficult to predict and many of which are beyond our control. These risks and uncertainties could cause actual results to differ materially from those expressed or implied in these forward-looking statements and could affect the extent to which a particular objective, projection, estimate, or prediction is realized. As a result, undue reliance should not be placed on such statements.

These forward-looking statements involve risks and uncertainties including, but not limited to, the following:

• our ability to stabilize our capital base after implementing our new capital structure, our ability to meet required conditions to repurchase and redeem capital stock from our members (including maintaining compliance with our minimum regulatory capital requirements and determining that our financial condition is sound enough to support such repurchases), and the amount and timing of such repurchases or redemptions;

• the effect of the resolution by our Board of Directors impacting the level of our dividends and retained earnings;

• changes in the demand by our members for advances, including the impact of the availability of other sources of funding for our members, such as deposits; 

• limits on our investments in long-term assets;

• the impact of new business strategies, including our ability to develop and implement business strategies focused on maintaining net interest income; the impact of our efforts to simplify our balance sheet on our market risk profile and future hedging costs; our ability to successfully transition to a new business model, implement business process improvements and scale the size of the Bank to our members' borrowing needs; the extent to which our members use our advances as part of their core financing rather than just as a back-up source of liquidity;

• general economic and market conditions, including the timing and volume of market activity, inflation/deflation, unemployment rates, housing prices, the condition of the mortgage and housing markets, increased delinquencies and/or loss rates on mortgages, prolonged or delayed foreclosure processes, and the effects on, among other things, mortgage-backed securities; volatility resulting from the effects of, and changes in, various monetary or fiscal policies and regulations, such as those determined by the Federal Reserve Board and Federal Deposit Insurance Corporation; impacts from various measures to stimulate the economy and help borrowers refinance home mortgages and student loans; disruptions in the credit and debt markets and the effect on future funding costs, sources, and availability;

• volatility of market prices, rates, and indices, or other factors, such as natural disasters, that could affect the value of our investments or collateral; changes in the value or liquidity of collateral securing advances to our members;

• changes in the value of and risks associated with our investments in mortgage loans, mortgage-backed securities, and FFELP ABS and the related credit enhancement protections;

• changes in our ability or intent to hold mortgage-backed securities to maturity;

• changes in mortgage interest rates and prepayment speeds on mortgage assets;

• membership changes, including the withdrawal of members due to restrictions on our dividends and redemptions or repurchase of our capital stock or the loss of members through mergers and consolidations; changes in the financial health of our members, including the resolution of some members; risks related to expanding our membership to include more institutions with regulators and resolution processes with which we have less experience;

• changes in investor demand for consolidated obligations and/or the terms of interest rate derivatives and similar agreements, including changes in the relative attractiveness of consolidated obligations as compared to other investment opportunities; changes in our cost of funds due to Congressional deliberations on the overall U.S. debt burden and any related rating agency actions impacting FHLB consolidated obligations;

• political events, including legislative, regulatory, judicial, or other developments that affect us, our members, our counterparties and/or investors in consolidated obligations, including, among other things, the Dodd-Frank Wall Street Reform and Consumer Protection Act and related regulations and proposals and legislation related to housing finance and GSE reform; changes by our regulator and changes in the FHLB Act or applicable regulations as a result of the Housing and Economic Recovery Act of 2008 (Housing Act) or as may otherwise be issued by our regulator; the

45

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

potential designation of the Bank as a nonbank financial company for supervision by the Federal Reserve;

• the ability of each of the other FHLBs to repay the principal and interest on consolidated obligations for which it is the primary obligor and with respect to which we have joint and several liability;

• the pace of technological change and our ability to develop and support technology and information systems; our ability to attract and retain skilled employees;

• the impact of new accounting standards and the application of accounting rules, including the impact of regulatory guidance on our application of such standards and rules;

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

• our ability to identify, manage, mitigate, and/or remedy internal control weaknesses and other operational risks.

For a more detailed discussion of the risk factors applicable to us, see Risk Factors in our 2011 Form 10-K on page 24.

These forward-looking statements are representative only as of the date they are made, and we undertake no obligation to update any forward-looking statement as a result of new information, future events, changed circumstances, or any other reason.

46

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Executive Summary

Second Quarter 2012 Financial Highlights

• We recorded net income of $69 million for the second quarter of 2012, 68% more than net income of $41 million in the second quarter of 2011, due to a strong base of net interest income, reduced OTTI charges ($14 million compared to $23 million in the second quarter of last year), and the elimination of our REFCORP assessments. Net interest income of $136 million was 7% higher than net interest income of $127 million in the second quarter of last year, in part because maturing debt was reissued at lower rates. Advance prepayment fee income of $9 million (net of fair value hedge adjustments) was $4 million higher than net prepayment fees recognized in the second quarter of last year, but $17 million less than net prepayment fees in the first quarter of 2012. While we continue to generate sound net interest income, we cannot predict the impact on future earnings of prepayment fees, OTTI credit losses, or hedging expenses.

• Advances outstanding at June 30, 2012, were $15.8 billion, 3% higher than the year-end level of $15.3 billion. We are talking to members - including those with significant liquidity on their balance sheets - about how advances can benefit their long-term earnings and interest rate risk management goals, even in this low-rate environment.

• MPF Loans held in portfolio were $12.2 billion at the end of the second quarter, down $1.9 billion (14%) from $14.1 billion at year-end 2011. The reduction is consistent with our 2008 decision not to add MPF Loans to our balance sheet. MPF Xtra loan volume was $709 million for our PFIs and $1.3 billion for the program overall during the quarter. In addition, some members are selling loans through traditional risk-sharing MPF products, which are participated to another FHLB.

• Total investment securities decreased $2.2 billion (6%) from year-end 2011 to $36.5 billion at the end of the second quarter of 2012, as investments matured or paid down. Total assets fell $2.7 billion (4%) from year-end 2011 to $68.6 billion at June 30, 2012. We anticipate that the overall size of the Bank will continue to fall as MPF Loans and investment securities mature or pay down.

• As a result of our net income, our retained earnings have grown to $1.5 billion, providing a level of protection for member capital. In addition, our profitable results and retained earnings have made it possible to fulfill our commitment to returning liquidity to members' investments in the Bank through the repurchase and redemption of $1.2 billion in capital stock since late 2011. We recently announced that we expect to repurchase $150 million in excess capital stock on August 15, 2012.

• We are in compliance with all of our regulatory capital requirements.

Summary and Outlook

Our overarching goal is to deliver the products and services that our members require while operating a financially strong, limited-risk, member-focused institution scaled to member demand. In order to do so, we must:

• Continue to generate consistent, profitable results while extending the benefits of our funding advantage to members while paying a reasonable dividend;

• Make it easier to transact business with us;

• Maximize member borrowing capacity through the expansion of collateral;

• Expand the product options of and member participation in the MPF Program; and

• Integrate our community investment programs with our members' social investment goals.

47

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Results of Operations

Net Interest Income

Net interest income is the difference between interest income that we receive on our interest earning assets and the interest expense we pay on interest bearing liabilities after accounting for the following in accordance with GAAP:

• Net interest paid or received on interest rate swaps that are accounted for as fair value or cash flow hedges;

• Amortization of premiums;

• Accretion of discounts;

• Amortization of hedge adjustments;

• Advance prepayment fees; and

• MPF credit enhancement fees.

The tables below present the increase or decrease in interest income and expense before the provision for credit losses due to volume or rate variances. Any change due to the combined volume/rate variance has been allocated ratably to volume and rate. The calculation of these components includes the following considerations:

• Average daily balances are computed using historical amortized cost balances except for items carried under the fair value option which include changes in fair value.

• Nonaccrual MPF Loans held in portfolio are included in average daily balances used to determine the effective yield/rate. Interest income on MPF Loans includes amortization as detailed in MPF Loans Held in Portfolio, net on page 56. 

• Interest and effective yield/rate includes all components of net interest income as discussed above. Yields/rates are calculated on an annualized basis.

	June 30, 2012							June 30, 2011							Increase (decrease) due to
For the three months ended	Average Balance		Total Interest			Yield/ Rate		Average Balance		Total Interest			Yield/ Rate		Volume			Rate			Net Change
Federal Funds sold, securities purchased under agreements to resell and deposit income	$	5,992	$	2		0.13	%	$	8,449	$	1		0.05	%	$	—		$	1		$	1
Investments	35,585		285			3.20	%	38,054		309			3.25	%	(20		)	(4		)	(24		)
Advances	15,332		55			1.43	%	17,037		67			1.57	%	(7		)	(5		)	(12		)
MPF Loans held in portfolio	12,407		143			4.61	%	16,209		192			4.74	%	(45		)	(4		)	(49		)
Total Interest Income on Assets	69,316		485			2.80	%	79,749		569			2.85	%	(72		)	(12		)	(84		)
Deposits	677		—			—	%	699		—			—	%	—			—			—
Securities sold under agreements to repurchase	—		—			—	%	1,200		5			1.67	%	(5		)	—			(5		)
Consolidated obligation discount notes	25,021		77			1.23	%	20,453		92			1.80	%	21			(36		)	(15		)
Consolidated obligation bonds	40,146		255			2.54	%	53,282		328			2.46	%	(81		)	8			(73		)
Mandatorily redeemable capital stock	13		—		*	0.25	%	532		—		*	0.10	%	—			—			—
Subordinated notes	1,000		15			6.00	%	1,000		14			5.60	%	—			1			1
Total Interest Expense on Liabilities	66,857		347			2.08	%	77,166		439			2.28	%	(65		)	(27		)	(92		)
Net yield on interest-earning assets	$	69,316	$	138		0.80	%	$	79,749	$	130		0.65	%	$	(7	)	$	15		$	8

* Less than $1 million

48

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

	June 30, 2012							June 30, 2011							Increase (decrease) due to
For the six months ended	Average Balance		Total Interest			Yield/ Rate		Average Balance		Total Interest			Yield/ Rate		Volume			Rate			Net Change
Federal Funds sold, securities purchased under agreements to resell and deposit income	$	5,275	$	4		0.15	%	$	10,069	$	6		0.12	%	$	(3	)	$	1		$	(2	)
Investments	36,359		581			3.20	%	38,578		623			3.23	%	(36		)	(6		)	(42		)
Advances	15,148		129			1.70	%	17,476		135			1.54	%	(18		)	12			(6		)
MPF Loans held in portfolio	12,879		296			4.60	%	16,687		391			4.69	%	(89		)	(6		)	(95		)
Total Interest Income on Assets	69,661		1,010			2.90	%	82,810		1,155			2.79	%	(146		)	1			(145		)
Deposits	695		—			—	%	748		—			—	%	—			—			—
Securities sold under agreements to repurchase	61		—			—	%	1,200		9			1.50	%	(9		)	—			(9		)
Consolidated obligation discount notes	25,801		153			1.19	%	22,519		190			1.69	%	28			(65		)	(37		)
Consolidated obligation bonds	39,458		531			2.69	%	54,332		673			2.48	%	(184		)	42			(142		)
Mandatorily redeemable capital stock	8		—		*	0.18	%	534		—		*	0.10	%	—			—			—
Subordinated notes	1,000		29			5.80	%	1,000		28			5.60	%	—			1			1
Total Interest Expense on Liabilities	67,023		713			2.13	%	80,333		900			2.24	%	(165		)	(22		)	(187		)
Net yield on interest-earning assets	$	69,661	$	297		0.85	%	$	82,810	$	255		0.62	%	$	19		$	23		$	42

* Less than $1 million

Net interest income changed mainly due to the following:

• Investment income declined primarily due to the decline in average investment balances as securities matured or paid down with proceeds primarily being used to pay down our consolidated obligation discount notes as well as to redeem our capital stock rather than being reinvested in investment securities. Yields on securities also declined slightly in line with market conditions. In connection with the approval of our Capital Plan the FHFA now requires, and our Board has passed, a resolution requiring us to obtain FHFA approval for any new investmentsthat have a term to maturity in excess of 270 days until such time as our MBS portfolio is less than three times our total regulatory capital and our advances represent more than 50% of our total assets. For further discussion of how this may impact us, see Risk Factors on page 24 in our 2011 Form 10-K. We expect our investment portfolio to continue to decline over time as a result of this limitation and as we continue to make repurchases and redemptions of excess capital stock.

• Interest income from advances decreased primarily due to the decline in average outstanding balances as members paid down advances over the past year or did not roll over maturing advances. Yield on advances for the comparative three months ended June 30 declined in line with the overall weakness in global market interest rates. Comparative yields for the six months ended June 30 show an increase due to an elevated level of prepayment fees of $26 million, net, that were recorded in the first quarter of 2012. We did not have a significant amount of prepayments fees in the second quarter of 2012 or in either of the first two quarters of 2011. See Note 4 - Interest Income and Interest Expense for details.

• Interest income from MPF Loans continued to decline along with MPF Loans outstanding as a result of our ongoing strategy to not add MPF Loans to our balance sheet, except for loans being acquired under our affordable housing programs. Yields on MPF Loans also declined slightly as the higher yield loans in our portfolio are most likely to have higher prepayment rates than lower yielding loans. We expect these trends to continue.

• The decline in interest income was more than offset by the reduction in interest expense on our consolidated obligation bonds. This reduction results in part from calling higher priced debt that was no longer needed as a result of our reduced funding needs for investments, advances, and MPF Loans. We were able to fund our balance sheet with consolidated obligation bonds and discount notes issued at lower interest rates relative to historical periods.

Net interest income also changed as a result of fair value and cash flow hedging activity. Specifically, the low interest rate environment resulted in negative net interest settlements attributable to open derivative hedging activity and the amortization of hedge adjustments of closed derivative hedging activity into net interest income also reduced net interest income. See the tables of Trading Securities, Derivatives and Hedging Activities, and Instruments Held at Fair Value Option starting on page 51 for further details.

49

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Non-Interest Gain (Loss)

	Three months						Six Months
For the periods ended June 30,	2012			2011			2012			2011
OTTI impairment charges, credit portion	$	(14	)	$	(23	)	$	(15	)	$	(43	)
Trading securities	(11		)	(11		)	(25		)	(22		)
Derivatives and hedging activities	(8		)	(4		)	3			(18		)
Instruments held at fair value option	2			(8		)	8			(13		)
Other, net
MPF Xtra and other MPF administration fees	3			2			5			5
All other	1			1			3			1
Total non-interest gain (loss)	$	(27	)	$	(43	)	$	(21	)	$	(90	)

OTTI impairment charges, credit portion

The amount of impairment charges declined as the economic conditions, and thus the significant inputs used to value our securities, were relatively consistent from the fourth quarter of 2011 through the second quarter of 2012. Although we actively monitor the credit quality of our MBS, it is not possible to predict whether we will have additional OTTI charges in the future. Future changes will depend on many factors including economic, financial market, and housing market conditions; and the actual and projected performance of the loan collateral underlying our MBS. If delinquency and/or loss rates on mortgages loans continue to increase, and/or there is a further decline in residential real estate values, we could experience reduced yields or additional losses on these investment securities. Further, increases in the time period for processing foreclosures and foreclosure delays by several major mortgage servicers may result in loss severities beyond current expectations. See Note 5 - Investment Securities to the financial statements for further details on our OTTI, including the significant inputs used to model our impairment calculations in a base case scenario. Also see Critical Accounting Policies and Estimates on page 61 for a discussion on the sensitivity of OTTI to an adverse case scenario.

50

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Trading Securities, Derivatives and Hedging Activities, and Instruments Held at Fair Value Option

Details on the impact of these items, which include hedge ineffectiveness and economic hedge activity, are detailed in the following tables. 

										Consolidated Obligation
	Advances			Investments			Mortgage Loans			Discount Notes			Bonds			Total
Three months ended June 30, 2012
Amortization/accretion of hedging activities	$	3		$	—		$	(13	)	$	(3	)	$	(8	)	$	(21	)
Net interest settlements	(21		)	(33		)	(1		)	(68		)	42			(81		)
Total hedging activities recorded in net interest income	(18		)	(33		)	(14		)	(71		)	34			(102		)
Fair value hedges	2			(4		)	—			—			(5		)	(7		)
Cash flow hedges	—			—			—			—			—			—
Economic hedges	—			—			(5		)	—			4			(1		)
Total recorded in derivatives and hedging activities	2			(4		)	(5		)	—			(1		)	(8		)
Derivative related amounts recorded in non-interest gain (loss) on -
Trading securities - hedged	—			(11		)	—			—			—			(11		)
Instruments held under fair value option	—			—			—			—			2			2
Total net effect of hedging activities	$	(16	)	$	(48	)	$	(19	)	$	(71	)	$	35		$	(119	)
Trading securities - unhedged	$	—		$	—		$	—		$	—		$	—		$	—
Three months ended June 30, 2011
Amortization/accretion of hedging activities	$	2		$	—		$	(11	)	$	(5	)	$	(10	)	$	(24	)
Net interest settlements	(39		)	(35		)	(2		)	(80		)	86			(70		)
Total hedging activities recorded in net interest income	(37		)	(35		)	(13		)	(85		)	76			(94		)
Fair value hedges	3			(2		)	(3		)	—			(1		)	(3		)
Cash flow hedges	12			—			—			—			—			12
Economic hedges	(1		)	(1		)	(22		)	1			10			(13		)
Total recorded in derivatives and hedging activities	14			(3		)	(25		)	1			9			(4		)
Derivative related amounts recorded in non-interest gain (loss) on -
Trading securities - hedged	—			(10		)	—			—			—			(10		)
Instruments held under fair value option	—			—			—			—			(8		)	(8		)
Total net effect of hedging activities	$	(23	)	$	(48	)	$	(38	)	$	(84	)	$	77		$	(116	)
Trading securities - unhedged	$	—		$	(1	)	$	—		$	—		$	—		$	(1	)

51

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

										Consolidated Obligation
	Advances			Investments			Mortgage Loans			Discount Notes			Bonds			Total
Six months ended June 30, 2012
Amortization/accretion of hedging activities	$	(16	)	$	—		$	(27	)	$	(6	)	$	(19	)	$	(68	)
Net interest settlements	(45		)	(65		)	(2		)	(135		)	80			(167		)
Total hedging activities recorded in net interest income	(61		)	(65		)	(29		)	(141		)	61			(235		)
Fair value hedges	5			(2		)	1			—			(6		)	(2		)
Cash flow hedges	—			—			—			2			—			2
Economic hedges	—			—			(7		)	6			4			3
Total recorded in derivatives and hedging activities	5			(2		)	(6		)	8			(2		)	3
Derivative related amounts recorded in non-interest gain (loss) on -
Trading securities - hedged	—			(24		)	—			—			—			(24		)
Instruments held under fair value option	—			—			—			2			6			8
Total net effect of hedging activities	$	(56	)	$	(91	)	$	(35	)	$	(131	)	$	65		$	(248	)
Trading securities - unhedged	$	—		$	(1	)	$	—		$	—		$	—		$	(1	)
Six months ended June 30, 2011
Amortization/accretion of hedging activities	$	13		$	—		$	(25	)	$	(10	)	$	(20	)	$	(42	)
Net interest settlements	(86		)	(67		)	(5		)	(161		)	160			(159		)
Total hedging activities recorded in net interest income	(73		)	(67		)	(30		)	(171		)	140			(201		)
Fair value hedges	7			(2		)	(8		)	—			2			(1		)
Cash flow hedges	12			—			—			2			—			14
Economic hedges	(1		)	(2		)	(52		)	2			22			(31		)
Total recorded in derivatives and hedging activities	18			(4		)	(60		)	4			24			(18		)
Derivative related amounts recorded in non-interest gain (loss) on -
Trading securities - hedged	—			(19		)	—			—			—			(19		)
Instruments held under fair value option	—			—			—			—			(13		)	(13		)
Total net effect of hedging activities	$	(55	)	$	(90	)	$	(90	)	$	(167	)	$	151		$	(251	)
Trading securities - unhedged	$	—		$	(3	)	$	—		$	—		$	—		$	(3	)

52

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Hedging Activities Recorded in Net Interest Income

• Net interest income was negatively impacted as the low interest rate environment resulted in negative net interest settlements attributable to derivative contracts in active hedge accounting relationships. The amortization of negative hedge adjustments from previous hedge relationships also reduced net interest income.

Fair Value and Cash Flow Hedges

• We recognized a modest net loss due to net ineffectiveness on our fair value hedge accounting relationships during 2012. The loss resulted from the difference in interest rate sensitivities between the interest rate derivatives used as hedging instruments and the underlying hedged assets or liabilities. We also recognized a small gain related to hedge ineffectiveness on our discount note cash flow hedge accounting relationships in the first quarter of 2012 but had less than $1 million of ineffectiveness in the second quarter.

Economic Hedges

• Economic hedges are hedges that do not qualify for hedge accounting treatment. Historically, we have used a combination of interest rate derivatives and callable consolidated obligation bonds to economically hedge the duration, convexity, and volatility risks associated with a portion of our MPF Loan portfolio. During the first half of 2012, interest rates rose slightly, which contributed to a small overall net loss on economic MPF Loan hedges for the period. As long as the MPF portfolio remains a relatively large component of the overall balance sheet, we anticipate fluctuations in hedge gains and losses from period to period.

• Economic hedges of our consolidated obligation bonds and discount notes benefited from the slight rise in interest rates and accordingly, we recognized nominal gains from that strategy.

Trading Securities

• We use trading securities as part of our overall balance sheet hedging strategy to hedge other assets or liabilities. These trading securities were acquired at a premium. As these trading securities are expected to continue to approach par value over time, the related premiums are expected to continue to be recognized as losses as part of the change in fair value until maturity or sale of the securities.

Instruments Held Under Fair Value Option

• We elected the fair value option for a portion of our advances, and consolidated obligations (bonds and discount notes) to economically hedge the interest rate risk associated with these instruments. Although there was no impact on advances, we had modest net gains on consolidated obligations, caused primarily by the slight rise in interest rates on longer termed bonds.

MPF Xtra and other MPF administration fees

This line item represents fees earned from administering mortgage loans not reported on our statements of condition. It includes fees we receive from other FHLBs to administer their MPF Loans, as well as fees earned on MPF Xtra loans owned by Fannie Mae and administered through our internal systems. MPF Xtra continues to grow, but due to the deferred nature of the recognition of fees, recorded income is up only slightly over prior periods. We defer MPF Xtra fees and recognize them over the contractual life of the loans. As of June 30, 2012, we had deferred MPF Xtra fees of $19 million compared to $16 million at December 31, 2011. Total MPF Xtra loans outstanding as of June 30, 2012 were $8.6 billion compared to $7.2 billion at December 31, 2011. MPF Xtra outstanding loans are not held on our statements of condition. A total of 490 PFIs have now executed MPF Xtra master commitments as of June 30, 2012, compared to 443 PFIs as of December 31, 2011, and 343 and 321 have delivered MPF Xtra loans as of those dates.

53

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Non-Interest Expense

	Three months				Six Months
For the periods ended June 30,	2012		2011		2012		2011
Compensation and benefits	$	16	$	14	$	31	$	29
Other operating expenses	7		8		16		17
FHFA	2		2		4		6
Office of Finance	1		1		2		2
Other
MPF administration expense	1		2		3		3
Real estate owned (REO) losses and expenses, net	5		2		6		8
Total non-interest expense	$	32	$	29	$	62	$	65

Compensation and benefits increased due to an increase in incentive compensation expense. Incentive compensation expense is a function of, among other things, an increase in retained earnings, which is up significantly in 2012 due to strong net income.

We experienced a significant decline in REO expense in the first quarter of 2012 due to increased recoveries from final settlements related to sold properties. During the second quarter of 2012, REO expenses returned to more historically normal rates of losses expected in a distressed market for REO sales, which may continue for the near future.

Assessments

	Three months				Six months
For the period ending June 30,	2012		2011		2012		2011
Affordable Housing Program	$	8	$	4	$	21	$	7
Resolution Funding Corporation	—		10		—		17
Total assessments	$	8	$	14	$	21	$	24

Effective with our expense recorded in the second quarter of 2011, we satisfied the outstanding obligation to the Resolution Funding Corporation (REFCORP) as discussed on page 51 of our 2011 Form 10-K. We now allocate a portion of our earnings historically paid to satisfy our REFCORP obligation to a separate restricted retained earnings account starting with the third quarter of 2011. See Joint Capital Enhancement Agreement with the Other FHLBs on page 64 in our 2011 Form 10-K for further details.

We continue to fund the Affordable Housing Program (AHP) program at a calculated rate of 10% percent of income before assessments. Since the 10% AHP rate was previously calculated after the assessment for REFCORP which is no longer being assessed, the effective rate assessed to AHP will be slightly higher going forward. See Note 13 - Affordable Housing Program (AHP) to the financial statements in our 2011 Form 10-K.

54

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Statements of Condition

	June 30, 2012			December 31, 2011
Cash and due from banks	$	24		$	1,002
Federal Funds sold and securities purchased under agreement to resell	3,797			1,775
Investment securities	36,539			38,728
Advances	15,797			15,291
MPF Loans held in portfolio, net	12,162			14,118
Other	322			341
Total assets	$	68,641		$	71,255
Consolidated obligation discount notes	$	23,439		$	25,404
Consolidated obligation bonds	39,872			39,880
Subordinated notes	1,000			1,000
Other	1,197			1,679
Total liabilities	65,508			67,963
Capital stock	1,850			2,402
Total retained earnings	1,504			1,321
Accumulated other comprehensive income (loss)	(221		)	(431		)
Total capital	3,133			3,292
Total liabilities and capital	$	68,641		$	71,255

Cash and due from banks, Federal Funds sold, and securities purchased under agreements to resell

Amounts held in cash and due from banks, Federal Funds sold and securities purchased under agreements to resell will vary each day based on the following:

• Interest rate spreads between Federal Funds sold and securities purchased under agreements to resell and our debt;

• Liquidity requirements;

• Counterparties available; and

• Collateral availability on securities purchased under agreements to resell.

Overnight rates for Federal Funds sold and securities purchased under agreements to resell have remained low. In addition, the European sovereign debt crisis has caused us to reduce our exposure to certain counterparties, see Short-Term Investments Unsecured Credit Exposureon page 66 for further details.

Investment Securities

Investment securities declined as securities matured or paid down and the proceeds were primarily used to pay down our shorter term consolidated obligation discount notes and to redeem a portion of our excess capital stock.

The largest portion of our investment securities portfolio was acquired to create an income bridge to transition our primary business to advances. In connection with the approval of our Capital Plan, the FHFA now requires, and our Board has passed, a resolution requiring us to obtain FHFA approval for any new investmentsthat have a term to maturity in excess of 270 days until such time as our MBS portfolio is less than three times our total regulatory capital and our advances represent more than 50% of our total assets. For further discussion of how this may impact us, see Risk Factors on page 24 in our 2011 Form 10-K. We expect our investment portfolio to continue to decline over time as a result of this limitation and as we continue to make repurchases and redemptions of excess capital stock.

Advances

Advances increased slightly during the quarter as amounts outstanding to our largest members remained relatively stable and paydowns resulting from the acquisition of former members by institutions outside our district declined. We recognized increased prepayment fee income in 2012 compared to the same periods of 2011, primarily attributable to members electing to restructure their outstanding advances with us to take advantage of the extended low rate environment during the first half of 2012. Specifically, the majority of these restructurings were treated as new advances for accounting purposes and the related

55

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

prepayment fees were immediately recognized as prepayment fee income. We have also seen some intra-quarter fluctuations of advances outstanding over the past six to nine months, as well as some growth in specific sectors. No member has reduced their advances outstanding by a significant amount as of June 30, 2012, compared to December 31, 2011.

The following table sets forth the outstanding par amount of advances of the five largest advance borrowers:

	As of June 30, 2012
BMO Harris Bank N.A.	$	2,375	15	%
Associated Bank, National Association	1,900		12	%
State Farm Bank, F.S.B.	1,600		10	%
The Northern Trust Company	930		6	%
Cole Taylor Bank	800		5	%
All other borrowers	7,985		52	%
Total par value	$	15,590	100	%

MPF Loans Held in Portfolio, net

MPF Loans outstanding continue to decrease as a result of our ongoing strategy to not add MPF Loans to our balance sheet, except for loans being acquired under our affordable housing programs. Thus, the rate of decline in our MPF Loan balance is dependent upon the speed at which borrowers prepay their mortgages.

The speed of prepayments on a percentage basis has slowed compared to long term historical measures. Though mortgage rates have remained historically low, borrowers are not moving or refinancing at the same rates as before the financial crisis. Should market mortgage rates rise in future periods, we could expect prepayment rates to decline further. Should rates fall further, additional prepayments may occur. If an MPF Loan prepays, any remaining closed basis adjustment related to that loan is immediately recognized. This may cause volatility in interest income as mortgage prepayment activity fluctuates as interest rates rise or fall. We cannot predict the extent to which future mortgage rates will rise or fall, or the extent of prepayment activity that will accompany the mortgage rate movement.

The following table summarizes information related to our net premium and hedge accounting basis adjustments on MPF Loans.

For the three months ended	June 30, 2012			June 30, 2011
Net premium amortization	$	4		$	5
Net amortization of closed basis adjustments	11			11
For the six months ended
Net premium amortization	$	7		$	11
Net amortization of closed basis adjustments	22			25
As of	June 30, 2012			December 31, 2011
Net premium balance on MPF Loans	$	43		$	50
Cumulative basis adjustments on MPF Loans a	—			40
Cumulative basis adjustments closed portion	119			105
MPF Loans, unpaid principal balance	12,046			13,965
Premium balance as a percent of MPF Loans	0.36		%	0.36		%

^a  Includes hedge accounting adjustments in hedge relationships that are still outstanding and loan commitment basis adjustments.

56

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Liquidity, Funding, & Capital Resources

Liquidity

For the period ending June 30, 2012, we have maintained a liquidity position in accordance with FHFA regulations and guidance, and policies established by our Board of Directors. Based upon our excess liquidity position described below, we anticipate remaining in compliance with our liquidity requirements. See Liquidity, Funding, & Capital Resources on page 55 in our 2011 Form 10-K for a detailed description of our liquidity requirements.

We use different measures of liquidity as follows:

Overnight Liquidity – Our policy requires us to maintain overnight liquid assets at least equal to 3.5% of total assets. As of June 30, 2012, our overnight liquidity was $5.3 billion or 7.8% of assets, giving us an excess overnight liquidity of $2.9 billion.

Deposit Coverage – To support our member deposits, FHFA regulations require us to have an amount equal to the current deposits invested in obligations of the United States government, deposits in eligible banks or trust companies, or advances with maturities not exceeding five years. As of June 30, 2012, we had excess liquidity of $15.9 billion to support member deposits.

Contingency Liquidity – The cumulative five business day liquidity measurement assumes there is a localized credit crisis for all FHLBs where the FHLBs do not have the ability to issue new consolidated obligations or borrow unsecured funds from other sources (e.g., purchasing Federal Funds or customer deposits). Our net liquidity in excess of our total uses and reserves over a cumulative five-business-day period was $20.7 billion as of June 30, 2012.

In addition to the liquidity measures discussed above, the FHFA requires all 12 FHLBs to maintain liquidity through short-term investments in an amount at least equal to anticipated cash outflows under two different scenarios. We are maintaining increased balances in short-term investments to comply with this requirement. We may fund overnight or shorter term investments and advances with discount notes that have maturities that extend beyond the maturities of the related investments or advances. For a discussion of how this may impact our earnings, see page 30 in the Risk Factors section of our 2011 Form 10-K.

Funding

Cash flows from operating activities

Our operating assets and liabilities support our mission to provide our member shareholders competitively priced funding, a reasonable return on their investment in our capital stock, and support for community investment activities.  Operating assets and liabilities can vary significantly in the normal course of business due to the amount and timing of cash flows, which are affected by member-driven activities and market conditions. We believe cash flows from operations, available cash balances and our ability to generate cash through short- and long-term borrowings are sufficient to fund our operating liquidity needs.  For the six months ended June 30, 2012, net cash provided (used) by operating activities was $(8) million. This resulted from net income adjusted for non-cash adjustments, primarily gains due to the change in net fair value adjustments on derivatives and hedging activities.

Cash flows from investing activities

Our investing activities predominantly include advances and MPF Loans held for investment, investment securities, and other short-term interest-earning assets. For the six months ended June 30, 2012, net cash provided (used) by investing activities was $1.9 billion. This resulted primarily from principal collected on MPF Loans, and proceeds from the maturities and paydowns of investment securities. 

Cash flows from financing activities

Our financing activities primarily reflect cash flows related to issuing and repaying consolidated obligations. For the six months ended June 30, 2012, net cash provided (used) in our financing activities was $(2.9) billion. This was primarily driven by net pay downs of our discount notes, the repurchase/redemption of our excess capital stock, and maturities of our securities sold under agreements to repurchase.

We fund our assets principally with consolidated obligations (bonds and discount notes) issued through the Office of Finance, and capital stock. Consolidated obligations have GSE status although they are not obligations of the United States and the United States does not guarantee them.

To the extent possible, reliance on short-term debt offers us advantages that are weighed against the increased risk of using short-term debt.  Traditionally, we have benefited from interest rates below LIBOR rates for our short-term debt which has

57

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

resulted in a positive impact on net interest income when used to fund LIBOR-indexed assets.  However, due to the short maturity of the debt, our balance sheet may be exposed to future access to the debt markets and to refinancing risks. 

During the first half of 2012, longer term rates declined as a result of the Federal Reserve's maturity extension program (referred to by some as "operation twist") and we found it advantageous not to replace maturing discount notes due to the favorable funding levels of longer term consolidated obligations bonds as noted in the below table.  As our balance sheet shrinks due to investment maturities and principal prepayments, our combined consolidated obligations and discount notes are expected to continue to decline.

The following shows our net cash flow issuances (redemptions) by type of consolidated obligation:

For the six months ended June 30,	2012			2011
Discount notes	$	(1,967	)	$	(1,793	)
Bonds	(35		)	(5,468		)
Total consolidated obligations	$	(2,002	)	$	(7,261	)

The following table summarizes par values of the consolidated obligations of the FHLBs and those for which we are the primary obligor:

	June 30, 2012									December 31, 2011
	Bonds			Discount Notes			Total			Bonds			Discount Notes			Total
FHLB System (par)	$	488,893		$	196,302		$	685,195		$	501,693		$	190,175		$	691,868
FHLB Chicago as primary obligor (par)	39,934			23,443			63,377			39,964			25,411			65,375
As a percent of the FHLB System	8		%	12		%	9		%	8		%	13		%	9		%

Conditions in Financial Markets

Towards the end of the first quarter 2012, it appeared that the U.S. economic environment was improving. Economic data such as the unemployment rate, payrolls, and GDP appeared to be moving in a positive direction. The unemployment rate was also trending lower, declining to 8.1% in April. Further, initial estimates for first quarter 2012 GDP growth were 2.2%. However, sentiment quickly changed as economic challenges in Europe began to re-emerge and economic data started to show signs of a stalling economy. The unemployment rate increased to 8.2% in April and first quarter GDP growth was revised lower to 1.9%.

With the Federal Reserve's Operation Twist set to expire on June 30, 2012, and market conditions deteriorating, market participants became focused on the Federal Reserve's next move. In June, the Federal Reserve announced plans to extend Operation Twist, increasing the average maturity length of its U.S. Treasury portfolio and indicated that it is prepared to ease monetary conditions further should economic conditions warrant.

FHLB System monthly consolidated obligations trading volume averaged $41 billion during the second quarter of 2012. Similar to the first quarter of 2012, it was somewhat uneven in nature. In April and June, monthly consolidated obligations trading activity averaged approximately $34 billion, but in May, trading activity was significantly higher at $56 billion. On a weighted average basis, when compared to 3-month LIBOR, FHLB System monthly funding costs were relatively stable during the quarter, but did worsen slightly when compared to first quarter 2012. In May the FHLB System issued $3 billion of new 5-year fixed rate non-callable consolidated obligation bonds under the mandated Global Issuances Program, the first 5-year Global offering since 2008.

58

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Capital Resources

Capital Rules and Minimum Capital Requirements

For a description of our current capital rules and minimum capital requirements, see Note 13 – Capital Stock and Mandatorily Redeemable Capital Stock (MRCS) to the financial statements. As of the date of this filing, we have managed our capital base and assets to remain in compliance with our minimum capital requirements.

Capital Amounts

The following table presents our five largest holdings of regulatory capital stock and reconciles our capital stock reported for regulatory purposes to the amount of capital reported in our statements of condition. MRCS is included in the calculation of the regulatory capital and leverage ratios but is recorded as a liability in the statements of condition.

As of June 30, 2012	Capital Stock						MRCS
BMO Harris Bank N.A.	$	254		14		%	$	—
The Northern Trust Company	135			7		%	—
Associated Bank N.A.	106			6		%	—
State Farm Bank, F.S.B.	85			5		%	—
One Mortgage Partners Corp. a	59			3		%	—
All other members	1,211			65		%	10
Total	$	1,850		100		%	$	10
	June 30, 2012			December 31, 2011
Capital stock	$	1,850		$	2,402
Total retained earnings	1,504			1,321
Accumulated other comprehensive income (loss)	(221		)	(431		)
Total GAAP capital	$	3,133		$	3,292
Capital Stock	$	1,850		$	2,402
MRCS	10			4
Designated Amount of subordinated notes b	—			800
Total retained earnings	1,504			1,321
Regulatory capital	$	3,364		$	4,527
Excess capital stock	$	433		$	1,064

^a  One Mortgage Partners Corp. is a subsidiary of JPMorgan Chase & Co.

^b  See Note 11 - Subordinated Notes to the financial statements.

Components of total GAAP capital changed for the following reasons:

• Capital stock decreased primarily due to repurchases or redemptions of excess member capital stock as further discussed in Note 13 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS).

• Total retained earnings increased due to our net income of $185 million less dividends paid of $2 million.

• Our unrealized loss in AOCI decreased due to several factors. For details see Note 14 - Accumulated Other Comprehensive Income (Loss) to the financial statements.

Credit deterioration may continue to negatively impact our private-label MBS portfolio.  We believe that future impairments of this portfolio are possible if unemployment rates, default, delinquency, or loss rates on mortgages continue to increase, or there is a further decline in residential real estate value. We cannot predict if or when such impairments will occur, or the impact such impairments may have on our retained earnings and capital position. See page 33 of the Risk Factors section of our 2011 Form 10-K.

We may not pay dividends if we fail to satisfy our minimum capital and liquidity requirements under the FHLB Act and FHFA regulations. As of April 18, 2012, our dividend declarations are no longer subject to FHFA approval. However, our Board of Directors has adopted a resolution that may not be amended without FHFA consent which requires that, in addition to declaring and paying dividends according to our Retained Earnings and Dividends Policy, dividends in any given quarter must not exceed the average of three-month LIBOR for that quarter on an annualized basis. The Board's resolution also requires that payment of

59

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

any dividend not result in our retained earnings falling below the level of retained earnings at the previous year-end. See

Note 12 - Regulatory Actions to the financial statements in this Form 10-Qand Retained Earnings and Dividend Policy on page 63 in our 2011 Form 10-K.

On July 24, 2012, our Board declared a cash dividend at an annualized rate of 0.30% per share based on our preliminary financial results for the second quarter of 2012. Although we continue to work to build our financial strength to support a reasonable dividend, any future dividend determination by our Board will depend on future operating results and be reviewed in accordance with the Board's resolution and our Retained Earnings and Dividend Policy.

We continue to allocate 20% of our net income each quarter to a restricted retained earnings account in accordance with the Joint Capital Enhancement Agreement that we entered into with the other FHLBs, as further discussed in Joint Capital Enhancement Agreement on page F-57 in our 2011 Form 10-K.

60

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Critical Accounting Policies and Estimates

The following table identifies our critical accounting policies and estimates and the page number where a detailed description of each can be found in our 2011 Form 10-K. 

Other-Than-Temporary Impairment (OTTI)	Page 67
Significant Inputs Used on all residential private-label MBS securities	Page 67
Fair Values – Sensitivity Analysis	Page 68
Estimating Fair Value	Page 68
Controls over Valuation Methodologies	Page 68
Controls over Third Party Pricing Services	Page 69
Fair Value Measurement Effect on Liquidity and Capital	Page 69
Allowance for Credit Losses - Conventional MPF Loan Assumptions	Page 70

Significant changes in our critical accounting policies and estimates from our 2011 Form 10-K are outlined below. Also see Note 2 - Summary of Significant Accounting Policies and Note 3 – Recently Issued but Not Yet Adopted Accounting Standards to the financial statements for the impact of recently issued accounting standards on our financial results.

Other-Than-Temporary Impairment (OTTI)

We complete our OTTI analysis for our private-label MBS using key modeling assumptions, significant inputs and methodologies provided by the OTTI Committee. For a detailed discussion of how we determine our base case OTTI as well as a discussion of our accounting for fair value non-credit write-downs and credit loss only write-downs, see Note 5 - Investment Securities to the financial statements.

In addition to evaluating our private-label MBS under a base case, most probable, scenario, we performed a cash flow analysis for each of these securities under an adverse, more stressful, housing price scenario.

Under this scenario, current-to-trough home price declines were projected to range from 5.0% to 11.0% over the 3- to 9-month period beginning April 1, 2012. For most of the housing markets, the declines were projected to occur over the 3-month period beginning April 1, 2012. From the trough, home prices were projected to recover using one of five different recovery paths that vary by housing market.

The following table presents the projected home price recovery by future month under the adverse case scenario.

As of June 30, 2012	Recovery Range Annualized %
Months	Low	High
1-6	0.0%	1.9%
7-18	0.0%	2.0%
19-24	0.7%	2.7%
25-30	1.3%	2.7%
31-42	1.3%	3.4%
43-66	1.3%	4.0%
Thereafter	1.5%	3.8%

61

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

The following table presents what the impact to net income from credit-related OTTI charges would have been under this adverse scenario based on the classification (prime, Alt-A, or subprime) at the time of origination.  

	Actual						Adverse Scenario
As of or for the quarter ended June 30, 2012	# of Securities	Unpaid Principal Balance		Credit-Related OTTI			# of Securities	Unpaid Principal Balance		Credit- Related OTTI
Prime	11	$	613	$	(14	)	17	$	1,031	$	(34	)
Alt-A	—	—		—			2	35		—			*
Subprime	—	—		—			11	147		(6		)
Total private-label MBS	11	$	613	$	(14	)	30	$	1,213	$	(40	)

* Less than $1 million.

In the preceding table, we classify our private-label MBS as prime, subprime, or Alt-A based upon the nature of the majority of underlying mortgages collateralizing each security using the issuer's classification, or as published by an NRSRO, at the time of issuance of the MBS.  On October 15, 2010, we instituted litigation relating to sixty-four private label MBS bonds purchased by us in an aggregate original principal amount of approximately $4.29 billion. Our complaints assert claims for untrue or misleading statements in the sale of securities, and it is possible that the classifications of private-label MBS, as well as other statements made about the securities by the issuer, are inaccurate.

Significant Inputs Used on all residential private-label MBS securities

We perform cash flow analyses on substantially all of our private-label MBS, impaired or not, from our two independent model services.

The following table summarizes the significant inputs for all our private-label MBS except for securities for which the underlying collateral data is not readily available. These were evaluated for OTTI using alternative procedures. The classification in this table (prime, Alt-A, and subprime) is based on the model used to run the estimated cash flows for the CUSIP, which may not necessarily be the classification at the time of issuance.

As of June 30, 2012			Prepayment Rates			Default Rates			Loss Severities			Current Credit Enhancement a
				Range %			Range %			Range %			Range %
	Unpaid Principal Balance		Weighted Average %	Low	High	Weighted Average %	Low	High	Weighted Average %	Low	High	Weighted Average %	Low	High
2006	$	843	7.4	5.9	8.3	37.5	18.0	46.7	41.7	33.1	47.1	1.4	—	11.9
2004 & prior	20		11.8	6.3	29.1	7.9	—	24.6	25.0	—	40.6	12.7	6.0	41.2
Total Prime	863		7.5	5.9	29.1	36.8	—	46.7	41.3	—	47.1	1.7	—	41.2
2006	720		6.3	4.4	8.5	52.5	41.3	72.8	50.8	46.7	62.2	2.1	(5.2)	9.6
2005	34		6.6	6.6	6.6	47.9	47.9	47.9	51.5	51.5	51.5	0.1	0.1	0.1
2004 & prior	2		6.9	6.1	8.1	37.2	32.9	52.3	34.2	29.1	42.0	28.9	23.6	70.2
Total Alt-A	756		6.3	4.4	8.5	52.3	32.9	72.8	50.7	29.1	62.2	2.1	(5.2)	70.2
2007	10		3.3	3.3	3.3	69.9	69.9	69.9	68.1	68.1	68.1	42.3	42.3	42.3
2006	918		3.0	1.7	4.2	74.1	59.3	87.8	69.8	64.4	78.7	22.8	(40.6)	100.1
2005	62		3.3	2.6	4.2	69.2	52.7	83.2	66.5	59.9	70.0	46.9	7.0	88.1
2004 & prior	16		5.9	2.4	7.1	30.5	17.1	44.3	73.2	28.1	91.9	40.2	(6.9)	100.0
Total Subprime	1,006		3.1	1.7	7.1	73.1	17.1	87.8	69.7	28.1	91.9	24.8	(40.6)	100.1
Total	2,625		5.5	1.7	29.1	55.2	—	87.8	54.9	—	91.9	10.7	(40.6)	100.1
Analyzed by alternative procedures	124
Total MBS	$	2,749

^a  A negative current credit enhancement exists when the remaining principal balance of the supporting collateral is less than the remaining principal balance of the security held.

62

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Supplement to Affordable Housing and Community Investment Programs

As previously disclosed in Note 13 - Affordable Housing Program (AHP) in our 2011 Form 10-K, in December 2011, our Board of Directors approved a plan to supplement our current affordable housing and community investment programs with $50 million in additional funds to promote affordable housing and economic development.  Based on the underlying facts and circumstances known to us when we filed our 2011 Form 10-K, we recognized a one time charge of $50 million in the fourth quarter related to our plan to fund affordable housing and economic development projects. 

We are in the process of developing a framework for the use of these funds, which we expect to be committed by the end of 2014.  Once a framework is approved by our Board of Directors and the FHFA, we will review our accounting treatment related to the $50 million charge recorded in 2011.  If the approved structure results in us establishing financing arrangements as opposed to non-recoverable grants, we may reverse the $50 million charge into current period income.

63

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Risk Management - Credit Risk

We track total credit risk with our members, including advances credit risk and risks in any of the categories as described on page 71 in our December 31, 2011 Form 10-K. As of June 30, 2012, we had total credit risk concentrated with two members with 10% or more of our total member credit outstanding; BMO Harris Bank N.A. (parent company BMO Financial Group) at 16% and Associated Bank N.A. (parent company Associated Banc-Corp) at 12%.

Investments

The carrying values of our investment securities, Federal Funds sold, and securities purchased under agreements to resell are presented in the following table by the long term NRSRO credit rating of the counterparty.

	AAA		AA		A		BBB		BB		B		CCC		CC		C		D		Unrated		Carrying Value
As of June 30, 2012
Investment securities-
U.S, Government & other governmental related	$	—	$	5,302	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	5,302
State or local housing agency	—		26		—		—		—		—		—		—		—		—		—		26
FFELP ABS	33		7,837		—		—		—		—		—		—		—		—		—		7,870
MBS:
GSE residential	—		17,362		—		—		—		—		—		—		—		—		—		17,362
Government-guaranteed residential	—		4,345		—		—		—		—		—		—		—		—		—		4,345
Private-label MBS residential	111		18		7		19		70		27		251		303		408		417		3		1,634
Total investment securities	144		34,890		7		19		70		27		251		303		408		417		3		36,539
Federal Funds sold	—		1,000		522		175		—		—		—		—		—		—		—		1,697
Securities purchased under agreements to resell	—		1,000		1,100		—		—		—		—		—		—		—		—		2,100
Total investments	$	144	$	36,890	$	1,629	$	194	$	70	$	27	$	251	$	303	$	408	$	417	$	3	$	40,336
As of December 31, 2011
Investment securities-
U.S. Government & other governmental related	$	—	$	6,311	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	—	$	6,311
State or local housing agency	—		27		—		—		—		—		—		—		—		—		—		27
FFELP ABS	1,340		6,819		—		—		—		—		—		—		—		—		—		8,159
MBS:
GSE residential	—		18,088		—		—		—		—		—		—		—		—		—		18,088
Government-guaranteed residential	—		4,378		—		—		—		—		—		—		—		—		—		4,378
Private-label MBS residential	136		19		9		19		96		35		286		449		522		191		3		1,765
Total investment securities	1,476		35,642		9		19		96		35		286		449		522		191		3		38,728
Federal Funds sold	—		950		—		—		—		—		—		—		—		—		—		950
Securities purchased under agreements to resell	—		200		625		—		—		—		—		—		—		—		—		825
Total investments	$	1,476	$	36,792	$	634	$	19	$	96	$	35	$	286	$	449	$	522	$	191	$	3	$	40,503

64

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

The following three tables present the unpaid principal balance and credit ratings of our private-label residential MBS by vintage year of issuance and by Prime, Alt-A, and Subprime. These MBS are predominantly variable rate securities.

Private-label MBS Prime	Vintage Year of Issue
As of June 30, 2012	2006			2005			2004 and Prior			Total
AAA	$	—		$	—		$	110		$	110
AA	—			—			16			16
A	—			—			3			3
BBB	—			—			4			4
Below investment grade	1,433			34			1			1,468
Unrated	—			—			—			—
Total unpaid principal balance outstanding	$	1,433		$	34		$	134		$	1,601
Amortized cost	$	1,113		$	25		$	135		$	1,273
Gross unrealized losses (incl. non-credit OTTI)	(282		)	(4		)	(2		)	(288		)
Gross unrealized gains	148			—			5			153
Fair value	$	979		$	21		$	138		$	1,138
Year-to-date OTTI:
Total OTTI	$	—		$	—		$	—		$	—
Net non-credit portion reclassified to (from) statements of comprehensive income	(14		)	—			—			(14		)
Net OTTI, credit portion	$	(14	)	$	—		$	—		$	(14	)
Weighted average percentage fair value to unpaid principal balance	68.3		%	61.2		%	102.7		%	71.1		%
Original weighted average credit support	11.7		%	14.2		%	3.7		%	11.1		%
Current weighted average credit support	2.0		%	0.1		%	10.0		%	2.6		%
Weighted average collateral delinquency	20.5		%	20.6		%	4.4		%	19.1		%

Private-label MBS Alt-A	Vintage Year of Issue
As of June 30, 2012	2006			2004 and Prior			Total
AAA	$	—		$	—		$	—
AA	—			—			—
A	—			—			—
BBB	—			1			1
Below investment grade	129			1			130
Unrated	—			—			—
Total unpaid principal balance outstanding	$	129		$	2		$	131
Amortized cost	$	82		$	2		$	84
Gross unrealized losses (incl. non-credit OTTI)	(22		)	—			(22		)
Gross unrealized gains	—			—			—
Fair value	$	60		$	2		$	62
Year-to-date OTTI:
Total OTTI	$	—		$	—		$	—
Net non-credit portion reclassified to (from) statements of comprehensive income	—			—			—
Net OTTI, credit portion	$	—		$	—		$	—
Weighted average percentage fair value to unpaid principal balance	46.9		%	120.9		%	47.3		%
Original weighted average credit support	18.0		%	7.0		%	17.8		%
Current weighted average credit support	(1.2		)%	24.1		%	(0.8		)%
Weighted average collateral delinquency	40.1		%	17.9		%	39.8		%

65

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Private-label MBS Subprime	Vintage Year of Issue
As of June 30, 2012	2007			2006			2005			2004 and Prior			Total
AAA	$	—		$	—		$	—		$	—		$	—
AA	—			—			—			2			2
A	—			—			1			3			4
BBB	—			11			1			4			16
Below investment grade	10			908			61			12			991
Unrated	—			—			—			4			4
Total unpaid principal balance outstanding	$	10		$	919		$	63		$	25		$	1,017
Amortized cost	$	9		$	626		$	58		$	22		$	715
Gross unrealized losses (incl. non-credit OTTI)	(1		)	(135		)	(6		)	(4		)	(146		)
Gross unrealized gains	—			21			1			2			24
Fair value	$	8		$	512		$	53		$	20		$	593
Year-to-date OTTI:
Total OTTI	$	—		$	—		$	(2	)	$	—		$	(2	)
Net non-credit portion reclassified to (from) statements of comprehensive income	—			—			1			—			1
Net OTTI, credit portion	$	—		$	—		$	(1	)	$	—		$	(1	)
Weighted average percentage fair value to unpaid principal balance	83.3		%	55.7		%	83.9		%	78.4		%	58.3		%
Original weighted average credit support	23.0		%	22.9		%	22.1		%	41.6		%	23.4		%
Current weighted average credit support	42.3		%	22.8		%	47.0		%	41.4		%	25.0		%
Weighted average collateral delinquency	38.7		%	41.7		%	40.0		%	19.2		%	41.0		%

Mortgage Backed Securities

The following table presents the components of amortized cost of our private-label MBS where a life-to-date OTTI credit impairment was taken at some point in time on these securities.

As of June 30, 2012	Unpaid Principal Balance	Life-To-Date OTTI Credit Impairment	Other Adjustments a	Amortized Cost
Private-label MBS	$2,749	$(742)	$65	$2,072

^a  Other Adjustments primarily consists of life-to-date accretion of interest related to the discounted present value of previously recognized credit-related impairment losses.

Short-Term Investments Unsecured Credit Exposure

We maintain a short-term investment portfolio to provide funds to meet the credit needs of our members and to maintain liquidity. See Liquidity on page 57for a discussion of our liquidity management.

Within our portfolio of short-term investments, we face credit risk from unsecured exposures to counterparties and members. Excluding investments in U.S. government and agency debt, our unsecured credit investments can have maturities that range between overnight and nine months and can consist of commercial paper, certificates of deposit, and Federal Funds sold. We are not currently entering into short-term unsecured investments beyond overnight and are transacting in Federal Funds only. We are not currently investing in term Federal Funds, commercial paper or certificates of deposit.

We actively monitor our credit exposures and the credit quality of our counterparties, including an assessment of each counterparty's financial performance, capital adequacy, sovereign support and the current market perceptions of the counterparties. General macro-economic, political and market conditions may also be considered when deciding on unsecured exposure. As a result of these monitoring activities, we may limit or suspend existing unsecured credit limits.

66

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Under current Bank policy, eligible counterparties for short-term investments, including Federal Funds sold, are:

(i) other FHLBs;

(ii) other U.S. GSEs; and

(iii) FDIC-insured financial institutions, including U.S. subsidiaries of foreign commercial banks, or U.S. branches of foreign commercial banks whose most recently published financial statements exhibit at least $250 million of Tier 1 (or total) capital. Foreign banks must be domiciled in a country whose sovereign rating is at least Aa3 from Moody's or AA- from Standard & Poor's.

In addition, our non-member counterparties must have a rating from an NRSRO of at least Baa or BBB in order to be eligible for an unsecured credit line. Our members who are FDIC-insured financial institutions discussed in (iii) above are eligible Federal Funds counterparties, although our members do not have to meet the NRSRO ratings requirement in order to be eligible for an unsecured credit line. While from time to time we may enter into Federal Funds transactions with our members that meet the qualifications outlined above, the majority of our Federal Funds transaction tend to be with non-member counterparties. As of June 30, 2012, we did not have any Federal Funds outstanding to members.

FHFA regulations include limits on the amount of unsecured credit we may extend to any member or non-member counterparty or to a group of affiliated counterparties. Our Board-approved policy limits are lower than those permitted by regulation, and actual limits granted to counterparties may be lower than our internal policy limits. The FHFA limit is based on a percentage of eligible regulatory capital and the counterparty's overall credit rating. Under FHFA regulations, the level of eligible regulatory capital is determined as the lesser of our total regulatory capital or the eligible amount of regulatory capital of the counterparty. The eligible amount of regulatory capital is then multiplied by a stated percentage. The stated percentage that we may offer for term extensions of unsecured credit ranges from 1% to 15% based on a counterparty's credit rating.

FHFA regulations also permit us to extend additional unsecured credit for overnight extensions of credit and for sales of Federal Funds subject to continuing contracts that renew automatically. Our total unsecured exposure to a counterparty may not exceed twice the regulatory limit for term exposures, or a total of 2% to 30% of the eligible amount of regulatory capital, based on the counterparty's credit rating. As of June 30, 2012, we were in compliance with the regulatory limits established for our unsecured credit.

We are prohibited by FHFA regulation from investing in financial instruments issued by non-U.S. entities other than those issued by U.S. branches and agency offices of foreign commercial banks. Our unsecured credit exposures to U.S. branches and agency offices of foreign commercial banks include the risk that, as a result of political or economic conditions in a country, the counterparty may be unable to meet their contractual repayment obligations. Our unsecured credit exposures to domestic counterparties and U.S. subsidiaries of foreign commercial banks include the risk that these counterparties have extended credit to foreign counterparties. We are in compliance with the 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 and for the period ended June 30, 2012.

The following table presents the credit ratings of the unsecured investment 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 based on the NRSRO used by us. This table does not reflect the foreign sovereign government's credit rating. We mitigate this risk by investing in unsecured investments with highly-rated counterparties and/or well-capitalized members. The unsecured investment credit exposure presented in the table may not reflect the average or maximum exposure during the period as the balances presented reflect the balances at period end.

As of June 30, 2012	AAA		AA		A		BBB		Total
Domestic U.S.	$	—	$	—	$	—	$	175	$	175
U.S. branches and agency offices of foreign commercial banks:
Canada	—		500		522		—		1,022
Australia	—		500		—		—		500
Total investments	$	—	$	1,000	$	522	$	175	$	1,697

We mitigate the credit risk on investments by investing in investments that have short-term maturities. All investments in the above table were of overnight duration.

67

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Credit Products

The following table presents the number of borrowers and credit outstanding to our borrowers by rating. Our internal rating is utilized in determining our members' borrowing capacity and is not a reflection of the credit risk on the credit outstanding to an individual member. Credit outstanding consists of outstanding advances, letters of credit, MPF credit enhancement obligations, member derivative exposures, and other obligations. Collateral loan value describes the borrowing capacity assigned to the types of collateral we accept for advances. Collateral loan value does not imply fair value.

	June 30, 2012									December 31, 2011
Rating	Number of Borrowers	% of Total		Credit Outstanding		% of Total		Collateral Loan Value		Number of Borrowers	% of Total		Credit Outstanding		% of Total		Collateral Loan Value
1-3	460	86	%	$	14,762	90	%	$	31,600	460	85	%	$	13,306	83	%	$	30,469
4	35	6	%	710		4	%	1,242		40	7	%	1,280		8	%	1,731
5	44	8	%	1,002		6	%	1,398		45	8	%	1,388		9	%	2,225
Other	1	—		—		—		—		1	—	%	2		—	%	5
Total	540	100	%	$	16,474	100	%	$	34,240	546	100	%	$	15,976	100	%	$	34,430

The majority of borrowers assigned a 4 rating in the above table were required to submit specific collateral listings and the majority of borrowers assigned a 5 rating were required to deliver collateral to us or a third party custodian on our behalf. The method by which a borrower reports collateral is dependent upon the collateral status to which it is assigned, as well as the type of collateral being pledged. We assign borrowers to a borrowing base (blanket-lien) status, listing-collateral status, or delivery-collateral status. Under a blanket lien status, a borrower may report collateral pledged under a summary borrowing base. For members or a class of collateral on listing status, the member must provide us with loan-level detail of the collateral. For members or a class of collateral on delivery status, the member must deliver the collateral to us or an approved custodian for our benefit. Members must report their collateral at least quarterly. For insurance companies we took delivery of collateral for all advances outstanding regardless of credit rating at June 30, 2012, and December 31, 2011.

As a result of the collateral and other credit risk mitigation efforts, we believe we are sufficiently well collateralized on our credit outstanding and we have not recorded an allowance for credit losses on our advances or other credit products as of the periods presented, nor have we ever incurred a credit loss on advances or our other credit products to date. We had one and four members (or former members) placed into receivership by their regulator during the three and six months ended June 30, 2012, and the total advances outstanding for the institutions at the time of their failure were $0 million and $62 million. All outstanding advances were either repaid or were assumed by the acquirer. No credit losses were incurred to date on these advances.

In addition to providing advances, we also offer standby letters of credit to our members and standby bond purchase agreements with state housing authorities within our district, as disclosed in Note 16 - Commitments and Contingencies to the financial statements. To secure letter of credit risks, we require collateral as we do on advances.

MPF Loans

We record provisions for credit losses for MPF Loans due to portfolio and market trends related to rising delinquency rates, increased loss severities, and prepayment speeds consistent with the percentage increase in delinquent, nonaccrual, and impaired MPF Loans to total conventional MPF Loans. Our provision is consistent with the overall trend of our credit quality indicators. Our allowance for credit losses as of June 30, 2012 compared to December 31, 2011 increased by $3 million. The primary driver of this increase was the increase in the weighted average loss severity rate. For details on our allowance for credit losses and how loss severity trends impact our estimates, please see Note 8 - Allowance for Credit Losses to the financial statements.

Derivatives

Our maximum exposure to credit loss is the fair value of derivative assets, not the notional amount, and assumes that these derivatives would completely fail to perform according to the terms of the contracts and the collateral or other security, if any, for the amount due proved to be of no value to us. Based on credit analyses and collateral requirements, we do not anticipate any credit losses on our derivative agreements. In determining maximum credit risk, we consider accrued interest receivables and payables, and the legal right to offset derivative assets and liabilities by counterparty. Collateral with respect to derivatives with members includes collateral assigned to us, as evidenced by a written security agreement and held by the member for our benefit. During 2012, we had no exposure to futures contracts or Futures Commissions Merchants. See Note 9 - Derivatives and Hedging Activities to the financial statements for further details of our derivatives and hedging activities.

68

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

The following table summarizes our derivative counterparty credit exposure. Rating shown is the lowest rating among the three largest NRSROs. Of our net exposure after collateral, no amounts were with institutions outside of the U.S.

	Derivative Asset Exposure at Fair Value Net of Cash Collateral		Securities Collateral Held		Net Exposure After Collateral
As of June 30, 2012
AA	$	2	$	—	$	2
A	36		36		—
Total Counterparties	38		36		2
Member institutions - MPF Xtra delivery commitments	14		—		14
Total derivatives	$	52	$	36	$	16
As of December 31, 2011
AA	$	9	$	2	$	7
A	27		25		2
Total counterparties	36		27		9
Member institutions - MPF Xtra delivery commitments	4		—		4
Total derivatives	$	40	$	27	$	13

69

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

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 (Housing Act) and the Dodd-Frank Wall Street Reform and Consumer Protection Act of 2010 (the Dodd-Frank Act). We expect the Housing Act 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 the derivatives transactions that we intermediate for our member institutions.

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 products to our member institutions 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 regulation.

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 Legislative and Regulatory Developments on page 17 in our 2011 Form 10-K, cleared swaps will be subject to new requirements including mandatory reporting, recordkeeping and documentation requirements established by applicable regulators and initial and variation margin requirements established by the clearinghouse and its clearing members.

The CFTC recently finalized an end-user exception to mandatory clearing that would not apply to the derivatives transactions that we enter into to hedge and manage our interest rate risk but that would apply to any derivatives transactions that we intermediate for our member institutions with $10 billion or less in assets as long as the member uses the swaps to hedge or mitigate their commercial risk and the Bank or member comply with the rule's additional reporting requirements. As a result, any such intermediated swaps would not be subject to mandatory clearing although such swaps would be subject to applicable requirements for uncleared swaps, including requirements that are expected to be issued under the Dodd-Frank Act.

Uncleared Derivatives Transactions. The Dodd-Frank Act will also change the regulatory landscape for derivative transactions that are not subject to mandatory clearing requirements (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 our 2011 Form 10-K. At this time, we do not expect to have to comply with such requirements until the beginning of 2013, at the earliest.

The CFTC, the SEC, the FHFA and other bank regulators are expected to continue to issue final rulemakings implementing the foregoing requirements between now and the end of 2012.

Effectiveness of Key Rules for Derivatives Transactions. Many of the provisions of the Dodd-Frank Act relating to derivatives that are expected to have the most effect on our derivatives transactions will take effect on a date determined by the CFTC, which must be no less than 60 days after the CFTC publishes final regulations implementing such provisions. Compliance dates for certain of these rulemakings that have been finalized and published by the CFTC, including new recordkeeping and reporting requirements, are based on the effectiveness of the final rules further defining the term “swap” jointly issued by the CFTC and SEC. Such final rules were issued in July 2012 but have not been published in the Federal Register and will not become effective until at least 60 days after they are published in the Federal Register. The implementation timeframe for mandatory clearing of eligible interest rate swaps is based on the effectiveness 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 will finalize these determinations in the beginning of 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.

We, together with the other FHLBs, 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 FHLBs to implement the

70

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

processes and documentation necessary to comply with the Dodd-Frank Act's new requirements for derivatives.

Developments Impacting Systemically Important Nonbank Financial Companies

Final Rule and Guidance on the Supervision and Regulation of Certain Nonbank Financial Companies. On April 11, 2012, the Financial Stability Oversight Council (the Oversight Council) issued a final rule and guidance on the standards and procedures the Oversight Council will follow in determining whether to designate a nonbank financial company for supervision by the Federal Reserve Board (the Federal Reserve) and to be subject to certain heightened prudential standards. The rule became effective May 11, 2012. If the Oversight Council designates us as a nonbank financial company subject to the supervision by the Federal Reserve, we would be subject to a separate prudential standards rule that has been proposed by the Federal Reserve, but is not yet final. The guidance issued with this final rule provides that the Oversight Council expects generally to follow a process in making its determinations consisting of:

• a first stage that will identify those nonbank financial companies that have $50 billion or more of total consolidated assets and exceed any one of five threshold indicators of interconnectedness or susceptibility to material financial distress, including whether a company has $20 billion or more in total debt outstanding. As of June 30 , 2012, we had $68.6 billion in total assets and $63.3 billion in total outstanding consolidated obligations, our principal form of outstanding debt;

• a second stage involving a robust analysis of the potential threat that the subject nonbank financial company could pose to U.S. financial stability based on additional quantitative and qualitative factors that are both industry and company specific; and

• a third stage analyzing the subject nonbank financial company using information collected directly from it.

The final rule provides that, in making its determinations, the Oversight Council will consider as one factor whether the nonbank financial company is subject to oversight by a primary financial regulatory agency (for us, the FHFA). A nonbank financial company that the Oversight Council proposes to designate for additional supervision and prudential standards under this rule has the opportunity to contest the designation. If we are designated by the Oversight Council for supervision by the Federal Reserve and to be subject to the additional prudential standards, then our operations and business could be adversely impacted by resulting additional costs and restrictions on our business activities.

Developments under the FHFA

Final Rule on Prudential Management and Operations Standards. On June 8, 2012, the FHFA issued a final rule, as required by the Housing Act, regarding prudential standards for the operation and management of the FHLBs, including, among others, prudential standards for internal controls and information systems, internal audit systems, market and interest rate risks, liquidity, asset growth, investments, credit and counterparty risk management, and records maintenance. The rule requires an FHLB that fails to meet a standard to file a corrective action plan with the FHFA within 30 calendar days of being notified by the FHFA of the need to file a corrective plan, unless the FHFA notifies the FHLB that the plan must be filed within a different time period. If an acceptable corrective action plan is not submitted by the deadline or the terms of such a plan are not complied with, the Director of the FHFA can impose sanctions, such as limits on asset growth, increases in the level of retained earnings, and prohibitions on dividends or the redemption or repurchase of capital stock. The final rule became effective August 7, 2012.

Other Significant Developments

Basel Committee on Banking Supervision Capital Framework. In September 2010, the Basel Committee on Banking Supervision (the Basel Committee) approved a new capital framework for internationally active banks. Banks subject to the new framework will be required to have increased amounts of capital with core capital being more strictly defined to include only common equity and other capital assets that are able to fully absorb losses.

On June 7, 2012, the Federal Reserve, the Office of the Comptroller of the Currency, and the Federal Deposit Insurance Corporation (the Agencies) concurrently published three joint notices of proposed rulemaking (the NPRs) seeking comments on comprehensive revisions to the Agencies' capital framework to incorporate the Basel Committee's new capital framework.

These revisions would, among other things:

• implement the Basel Committee's capital standards related to minimum requirements, regulatory capital, and additional capital buffers;

• revise the methodologies for calculating risk-weighted assets in the general risk-based capital rules; and

• revise the approach by which large banks determine their capital adequacy.

The NPRs do not incorporate the reforms related to liquidity risk management published in Basel III, which the Agencies are expected to propose in a separate rulemaking.

71

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

If the new NPRs are adopted as proposed and depending on the liquidity framework expected to be proposed by the Agencies, some of our members could need to divest assets in order to comply with the more stringent capital and liquidity requirements, thereby tending to decrease their need for advances. The requirements may also adversely impact investor demand for consolidated obligations to the extent that affected institutions divest or limit their investments in consolidated obligations. On the other hand, any new liquidity requirements could motivate our members to borrow term advances from us to create and maintain balance sheet liquidity.

72

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Item 3. Quantitative and Qualitative Disclosures About Market Risk.

The FHFA's regulations, its Financial Management Policy, and our internal asset and liability management policies all establish guidelines for our use of interest rate derivatives. These regulations and policies prohibit the speculative use of financial instruments authorized for hedging purposes. They also limit the amount of counterparty credit risk allowed. For additional information please see Item 7A Quantitative and Qualitative Disclosures about Market Risk on page 87 in our 2011 Form 10-K.

Measurement of Market Risk Exposure

To measure our exposure, we discount the cash flows generated from modeling the terms and conditions of all interest rate-sensitive securities using current interest rates to determine their fair values or spreads to the swap curve for securities where third party prices are used. This includes considering explicit and embedded options using a lattice model or Monte Carlo simulation. We estimate yield curve, option, and basis risk exposures by calculating the fair value change in relation to various parallel changes in interest rates, implied volatility, prepayment speeds, spreads to the swap curve and mortgage rates.

The table below summarizes our sensitivity to various interest rate risk exposures in terms of changes in market value.

				Option Risk						Basis Risk
	Yield Curve Risk			Implied Volatility			Prepayment Speeds			Spread to Swap Curve			Mortgage Spread
As of June 30, 2012
Advances	$	(3	)	$	—		$	—		$	(4	)	$	—
MPF Loans	(2		)	(2		)	(7		)	(3		)	1
Mortgage Backed Securities	(10		)	(1		)	(2		)	(11		)	—
Other interest earning assets	(2		)	—			—			(5		)	—
Interest-bearing liabilities	10			6			—			9			—
Derivatives	6			(1		)	—			—			—
Total	$	(1	)	$	2		$	(9	)	n/m			$	1
As of December 31, 2011
Advances	$	(2	)	$	1		$	—		$	(4	)	$	—
MPF Loans	(2		)	(4		)	(8		)	(4		)	2
Mortgage Backed Securities	(10		)	(1		)	(2		)	(12		)	—
Other interest earning assets	(2		)	—			—			(6		)	—
Interest-bearing liabilities	11			7			—			10			—
Derivatives	5			(2		)	—			—			—
Total	$	—		$	1		$	(10	)	n/m			$	2

n/m Spread movements to the swap curve within each category are independent of the other categories and therefore a total is not meaningful.

Yield curve risk – Change in market value for a one basis point parallel increase in the swap curve.

Option risk (implied volatility) – Change in market value for a one percent parallel increase in the swaption volatility.

Option risk (prepayment speeds) – Change in market value for a one percent increase in prepayment speeds.

Basis risk (spread to swap curve) – Change in market value for a one basis point parallel increase in the spread to the swap curve.

Basis risk (mortgage spread) – Change in market value for a one basis point increase in mortgage rates.

73

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

As of June 30, 2012, our sensitivity to changes in implied volatility was $2 million. At December 31, 2011, our sensitivity to changes in implied volatility was $1 million. These sensitivities are limited in that they do not incorporate other risks, including but not limited to, non-parallel changes in yield curves, implied volatility, prepayment speeds, and basis risk related to differences between the swap and the other curves. Option positions embedded in our mortgage assets and callable debt impact our yield curve risk profile, such that swap curve changes significantly greater than one basis point cannot be linearly interpolated from the table above.

Duration of equity is another measure to express interest rate sensitivity. We report the results of our duration of equity calculations to the FHFA each quarter. We measure duration of equity in a base case using the actual yield curve as of a specified date and then shock it with an instantaneous shift of the entire curve. The following table presents the duration of equity reported by us to the FHFA in accordance with the FHFA's guidance, which prescribes that down and up interest-rate shocks equal 200 basis points. However, the applicable regulation restricts the down rate from assuming a negative interest rate. Therefore, we adjust the down rate accordingly in periods of very low levels of interest rates. The results are shown in years of duration equity.

As of June 30, 2012			As of December 31, 2011
Down 200 bps	Base	Up 200 bps	Down 200 bps	Base	Up 200 bps
2.9	0.4	-2.2	2.8	2.3	1.8

Duration gap is another measure of interest rate sensitivity. Duration gap is calculated by dividing the dollar duration of equity by the fair value of assets. A positive duration gap indicates an exposure to rising interest rates. As of June 30, 2012, our duration gap was 0.2 months, compared to 1.1 months as of December 31, 2011.

As of June 30, 2012, on a U.S. GAAP basis, our fair value deficit (relative to book value) was $82 million, and our market value of equity to book value of equity ratio was 97%. At December 31, 2011, our fair value deficit was $345 million and our market value of equity to book value of equity ratio was 90%. These improvements were primarily because mortgage spreads tightened. Our market to book value of total capital for regulatory risk-based capital purposes differs from this GAAP calculation,  as discussed starting on page F-54 in our 2011 Form 10-K.

Our Asset/Liability Management Committee provides oversight of risk management practices and policies. This includes routine reporting to senior Bank management and the Board of Directors, as well as maintaining the Market Risk Policy, which defines our interest rate risk limits. The table below reflects the change in market risk limits under the Market Risk Policy.

	June 30, 2012					December 31, 2011
Scenario as of	Change in Market Value of Equity		Loss Limit			Change in Market Value of Equity			Loss Limit
-200 bp	$	128.8	$	(185.0	)	$	199.0		$	(185.0	)
-100 bp	83.0		(77.5		)	138.7			(77.5		)
-50 bp	50.8		(30.0		)	78.0			(30.0		)
-25 bp	16.1		(15.0		)	30.0			(15.0		)
+25 bp	9.1		(30.0		)	(7.4		)	(30.0		)
+50 bp	32.0		(60.0		)	(4.0		)	(60.0		)
+100 bp	104.6		(155.0		)	11.2			(155.0		)
+200 bp	206.0		(370.0		)	2.6			(370.0		)

74

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Item 4. Controls and Procedures.

Disclosure Controls and Procedures

Under the supervision and with the participation of management, including our principal executive officer and principal financial officer, we conducted an evaluation of the effectiveness of the design and operation of our disclosure controls and procedures, as defined in Rules 13a-15(e) and 15d-15(e) under the Securities Exchange Act of 1934, as amended, as of the end of the period covered by this report (the Evaluation Date). Based on this evaluation, the principal executive officer and principal financial officer concluded as of the Evaluation Date that the disclosure controls and procedures were effective such that information relating to us that is required to be disclosed in reports filed with the SEC (i) is recorded, processed, summarized, and reported within the time periods specified in SEC rules and forms, and (ii) is accumulated and communicated to management, including our principal executive officer and principal financial officer, as appropriate to allow timely decisions regarding required disclosure.

Changes in Internal Control Over Financial Reporting

For the current year quarter presented in this Form 10-Q, 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.

Consolidated Obligations

Our disclosure controls and procedures include controls and procedures for accumulating and communicating information relating to our joint and several liability for the consolidated obligations of other FHLBs. For further information, see Item 9A. Controls and Procedures on page 94 of our 2011 Form 10-K.

75

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

PART II - OTHER INFORMATION

Item 1. Legal Proceedings.

On October 15, 2010, the Bank instituted litigation relating to 64 private label MBS bonds purchased by the Bank in an aggregate original principal amount of approximately $4.29 billion. The Bank's complaints assert claims for untrue or misleading statements in the sale of securities, signing or circulating securities documents that contained material misrepresentations, negligent misrepresentation, market manipulation, untrue or misleading statements in registration statements, controlling person liability, and rescission of contract. In these actions, the Bank seeks the remedies of 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 litigation was brought in state court in the states of Washington, California and Illinois.

Defendants in the litigation include the following entities and affiliates thereof: American Enterprise Investment Services, Inc.; Ameriprise Financial Services, Inc.; Bank of America Corporation; Barclays Capital Inc.; Citigroup, Inc.; Countrywide Financial Corporation, Credit Suisse Securities (USA) LLC; First Horizon Asset Securities, Inc.; First Tennessee Bank, N.A.; GMAC Mortgage Group LLC, Goldman Sachs & Co., RBS Securities Inc., Sand Canyon Acceptance Corporation, N.A., J.P. Morgan Acceptance Corporation; Long Beach Securities Corp.; Merrill Lynch, Pierce Fenner & Smith Incorporated; Morgan Stanley & Co., Incorporated; Mortgage Asset Securitization Transactions, Inc.; PNC Investments LLC; Nomura Holding America Inc.; Sequoia Residential Funding, Inc.; UBS Securities LLC; WaMu Capital Corp.; and Wells Fargo Bank, N.A. One Mortgage Partners Corp., which is affiliated with J.P. Morgan Acceptance Corporation but is not a defendant in these actions, held approximately 3% of the Bank's capital stock as of June 30, 2012.  

In the Washington action, defendants filed a motion to dismiss on March 4, 2011, which was denied in its entirety on June 17, 2011. The action is proceeding in discovery. In the Illinois action, defendants filed motions to dismiss on May 27, 2011, oral argument was heard on the motions on June 5, 2012, and the court took the motions under advisement.  In the California action, defendants filed demurrers asserting statutes of limitations arguments on December 1, 2011, which were denied in their entirety on June 26, 2012.  Defendants will be filing additional demurrers asserting other grounds for dismissal in the coming months in the California action.

The Bank may also be subject to various other legal proceedings arising in the normal course of business. After consultation with legal counsel, management is not aware of any other proceedings that might have a material effect on the Bank's financial condition or results of operations.

Item 1A. Risk Factors.

In addition to the information presented in this report, readers should carefully consider the factors set forth in the Risk Factors section on page 24 in our 2011 Form 10-K, which could materially affect our business, financial condition, or future results. These risks are not the only risks facing us. Additional risks and uncertainties not currently known to us or that we currently deem to be immaterial may also severely affect us.

76

Federal Home Loan Bank of Chicago

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.

Item 6. Exhibits.

10.1	Federal Home Loan Bank of Chicago President's Incentive Compensation Plan, effective January 1, 2012
10.2	Federal Home Loan Bank of Chicago Key Employee Long Term Incentive Compensation Plan, effective January 1, 2012
10.3	Federal Home Loan Bank of Chicago Executive Incentive Compensation Plan, effective January 1, 2012
31.1	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 by the Principal Executive Officer
31.2	Certification Pursuant to Section 302 of the Sarbanes-Oxley Act of 2002 by the Principal Financial Officer
32.1	Certification pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 by the Principal Executive Officer
32.2	Certification pursuant to 18 U.S.C. 1350, as adopted pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 by the Principal Financial Officer
101.INS	XBRL Instance Document
101.SCH	XBRL Taxonomy Extension Schema Document
101.CAL	XBRL Taxonomy Extension Calculation Linkbase Document
101.DEF	XBRL Taxonomy Extension Definition Linkbase Document
101.LAB	XBRL Taxonomy Extension Label Linkbase Document
101.PRE	XBRL Taxonomy Extension Presentation Linkbase Document

77

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Glossary of Terms

Advances: Secured loans to members.

ABS: Asset-backed-securities.

AFS: Available-for-sale securities.

AHP: Affordable Housing Program.

AOCI: Accumulated Other Comprehensive Income.

Capital Plan: The Federal Home Loan Bank of Chicago Capital Plan, effective January 1, 2012.

C&D Order: We entered into a Consent Cease and Desist Order with the Finance Board on October 10, 2007 and an amendment thereto as of July 24, 2008. On April 18, 2012, the FHFA terminated the C&D Order.

CE Amount: A PFI's assumption of credit risk on conventional MPF Loan products that are funded by, or sold to, an MPF Bank by providing credit enhancement either through a direct liability to pay credit losses up to a specified amount or through a contractual obligation to provide SMI. Does not apply to the MPF Xtra product.

CFTC: Commodity Futures Trading Commission.

Consolidated Obligations or COs: FHLB debt instruments (bonds and discount notes) which are the joint and several liability of all FHLBs; issued by the Office of Finance.

Consolidated obligation bonds: Consolidated obligations that make periodic interest payments with a term generally over one year, although we have issued for terms of less than one year.

Core Based Statistical Areas (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 urban area of 10,000 or more people.

Designated Amount: A percentage of the outstanding principal amount of the subordinated notes we were allowed to include prior to January 1, 2012, in determining compliance with our regulatory capital and minimum regulatory leverage ratio requirements and to calculate our maximum permissible holdings of mortgage-backed securities and unsecured credit.

Discount notes: Consolidated obligations with a term of one year or less, which sell at less than their face amount and are redeemed at par value when they mature.

Dodd-Frank Act: Dodd-Frank Wall Street Reform and Consumer Protection Act, enacted July 21, 2010.

Excess capital stock: Capital stock held by members in excess of their statutory requirement or minimum investment requirement, as applicable.

Excess capital stock ratio: Excess capital stock divided by regulatory capital.  

Fannie Mae: Federal National Mortgage Association.

FASB: Financial Accounting Standards Board.

FDIC: Federal Deposit Insurance Corporation.

Federal Reserve: Federal Reserve Bank of New York.

FFELP: Federal Family Education Loan Program.

FHA: Federal Housing Administration.

FHFA: Federal Housing Finance Agency - The Housing and Economic Recovery Act of 2008 enacted on July 30, 2008 created the Federal Housing Finance Agency which became the regulator of the FHLBs.

FHLB Act: The Federal Home Loan Bank Act of 1932, as amended.

FHLBs: The 12 Federal Home Loan Banks or subset thereof.

78

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

FHLB System: The 12 FHLBs and the Office of Finance.

Finance Board: The Federal Housing Finance Board. We were supervised and regulated by the Finance Board, prior to creation of the Federal Housing Finance Agency as regulator of the FHLBs by the Housing Act, effective July 30, 2008.

Freddie Mac: Federal Home Loan Mortgage Corporation.

GAAP: Generally accepted accounting principles in the United States of America.

Ginnie Mae: Government National Mortgage Association.

Government Loans: MPF Loans held in our portfolio comprised of loans insured by the Federal Housing Administration (FHA) or the Department of Housing and Urban Development (HUD) and loans guaranteed by the Department of Veteran Affairs (VA) or Department of Agriculture Rural Housing Service (RHS).

GSE: Government sponsored enterprise.

Housing Act: Housing and Economic Recovery Act of 2008, enacted July 30, 2008.

HUD: Department of Housing and Urban Development.

HTM: Held-to-maturity securities.

IFRS: International Financial Reporting Standards.

JCE Agreement: Joint Capital Enhancement Agreement entered into by all 12 FHLBs, effective February 28, 2011 and amended August 5, 2011, which is intended to enhance the capital position of each FHLB. The intent of the agreement is to allocate that portion of each FHLB's earnings historically paid to satisfy its REFCORP obligation to a separate retained earnings account at that FHLB.

LIBOR: London Interbank Offered Rate.

Master Commitment or MC: Pool of MPF Loans purchased or funded by an MPF Bank.

MBS: Mortgage-backed securities.

MPF^®: Mortgage Partnership Finance.

MPF Banks: FHLBs that participate in the MPF program.

MPF Loans: Conforming conventional and government fixed-rate mortgage loans secured by one-to-four family residential properties with maturities from five to 30 years or participations in such mortgage loans that are acquired under the MPF Program.

MPF Program: A secondary mortgage market structure that provides liquidity to FHLB members that are PFIs through the purchase or funding by an FHLB of MPF Loans.

MPF Xtra^® product: The MPF Program product under which we acquire MPF Loans from PFIs without any CE Amount and concurrently resell them to Fannie Mae.

MRCS: mandatorily redeemable capital stock.

Nonaccrual MPF Loans: Nonperforming mortgage loans in which the collection of principal and interest is determined to be doubtful or when interest or principal is past due for 90 days or more, except when the MPF Loan is well secured and in the process of collection.

NRSRO: Nationally Recognized Statistical Rating Organization.

Office of Finance: A joint office of the FHLBs established by the Finance Board to facilitate issuing and servicing of consolidated obligations.

OTTI: Other-than-temporary impairment.

79

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

OTTI Committee: An FHLB System OTTI Committee formed by the FHLBs to achieve consistency among the FHLBs in their analyses of the OTTI of private-label MBS.

PFI: Participating Financial Institution. A PFI is a member (or eligible housing associate) of an MPF Bank that has applied to and been accepted to do business with its MPF Bank under the MPF Program.

REFCORP: Resolution Funding Corporation.

Regulatory capital: Regulatory capital stock plus retained earnings.

Regulatory capital stock: The sum of the paid-in value of capital stock and mandatorily redeemable capital stock.

REO: Real estate owned.

Repurchase Plan: Our plan to repurchase the excess capital stock of current members over time, as approved by the FHFA on December 22, 2011. The plan terminated by its terms effective upon our most recent repurchase of excess capital stock on May 15, 2012.

RHS: Department of Agriculture Rural Housing Service.

SEC: Securities and Exchange Commission.

SMI: Supplemental mortgage insurance.

System: The Federal Home Loan Bank System consisting of the 12 Federal Home Loan Banks and the Office of Finance.

TBA: A forward contract on a mortgage-backed security (MBS), typically issued by a U.S. government sponsored entity, whereby a seller agrees to deliver a MBS for an agreed upon price on an agreed upon date.

VA: Department of Veteran's Affairs.

80

Federal Home Loan Bank of Chicago

(Dollars in millions except per share amounts unless otherwise indicated)

Signatures

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

		FEDERAL HOME LOAN BANK OF CHICAGO
		/s/    Matthew R. Feldman
		By:	Matthew R. Feldman
		Title:	President and Chief Executive Officer
Date:	August 10, 2012	(Principal Executive Officer)
		/s/   Roger D. Lundstrom
		By:	Roger D. Lundstrom
		Title:	Executive Vice President, Financial Information and Chief Financial Officer
Date:	August 10, 2012	(Principal Financial Officer and Principal Accounting Officer)

S-1

EX-10.1

EXHIBIT 10.1

FEDERAL HOME LOAN BANK OF CHICAGO

President's Incentive Compensation Plan

I.    Plan Objectives

The purpose of the Federal Home Loan Bank of Chicago's (“Bank”) President's Incentive Compensation Plan (“Plan”) is to:

* Promote the achievement of the Bank's profitability and business goals which directly support the Bank's business plan.

* Link compensation to specific performance measures; and,

* Provide a competitive compensation program.

II.    PLAN YEAR ACTIONS

A. The Board of Directors shall each Plan Year establish Criteria and Performance Targets consistent with the Bank's Business Plan approved by the Board of Directors.

B. Each Plan Year's Criteria, Performance Targets, Target Values and Definitions of Plan Criteria will be established in January by the Personnel & Compensation Committee, with the approval of the Board of Directors on a schedule approved by the Personnel & Compensation Committee.

C. The President's performance will be appraised by the Personnel and Compensation Committee in January following the Plan Year and any award pursuant to this Plan shall be paid in cash to the President.

D. The President's Incentive Award payout levels will be identified in a schedule or attachment approved by the Personnel & Compensation Committee for each Plan Year and which is referred to in this Plan as “Exhibit A”.

III.    Award Calculations

A. An Award for a Plan Year is calculated by:

(1) Calculating the actual Plan Year Performance as a Percent of Target for each of the Criteria separately;

(2) Multiplying the Target Value by the Performance as a Percent of Target for each of the Criteria;

(3) Totaling each of the products in (2), above, which constitutes the Total Award Percentage (Weighted Average);

(4) Identifying the Total Award Percentage that correlates to the Payout Level for the Plan Year as listed in Exhibit A;

(5) Multiplying the Payout Level by the Plan Year base salary to determine the dollar amount of the award.

The maximum and minimum incentive award payments are established in Exhibit A for each Plan Year. The incentive award payment shall be calculated in accordance with the Incentive Compensation Payout and Award Scale in Exhibit A.

IV. FORM AND TIME OF PAYMENT; RECOVERY OF UNDUE INCENTIVES

A.Form

Payment of all awards shall be made in cash. Awards are payable following a Plan Year on the payment date (as established from time to time), after results are reported and payments, if any, are approved by the Personnel & Compensation Committee. To receive an award, the President must be employed by the Bank on the Payment Date.

B. Notwithstanding the foregoing,

(1) The award for a Plan Year if the President dies while still employed at the Bank but prior to the Payment Date shall be payable to his beneficiary, heirs or legatees, as provided by law, within sixty (60) days of such event.

(2) The award if the President (i) becomes Disabled, or (ii) attains age 60 and retires (for purposes of the Financial Institutions Retirement Fund) from active employment at the Bank prior to the Payment Date, shall be payable within sixty (60) days of such event.

(3) In the event of: (i) a termination of the President's employment by the President for Good Reason, or (ii) the termination of the President's employment by the Bank without Cause after the end of the Plan Year but before the Payment Date, the award shall be payable to the President within sixty (60) days of such event.

(4) Should any income tax become due based on payments to the President, such amount of tax shall become immediately available for withdrawal.

C. Recovery of Undue Incentives.

Any undue incentives paid to the Bank's President based on the purported achievement of financial or operational goals under this Plan for a Plan Year that subsequently are deemed to be materially inaccurate, misstated, or misleading shall be recoverable from the President by the Bank for a period of up to three (3) years following the dissemination of the inaccuracy, misstatement, or misleading information. This incentive recovery provision shall only apply to Plan Years for which the Performance Targets are later determined to have not been achieved as a result of the inaccurate, misstated, and/or misleading information.

Inaccurate, misstated, and/or misleading achievement of financial or operational goals include, but are not limited to, material inaccuracies, misstatements, and/or misleading information relating to financial reporting or award performance metric criteria for the related Plan Year as determined by the Board of Directors or materially understated credit risk, market risk, operational risk, or expenses. “Undue incentives” with respect to the President means the amount of any payment under this Plan in excess of what would have been paid to the President if the purported achievement of financial or operational goals had not been inaccurate, misstated, or misleading. The value of any benefit to the President under this Plan related to an undue incentive shall be reduced and/or recovered by the Bank to the fullest extent possible by a variety of means, which may include reduction of future incentive awards and/or reimbursement of the Bank by the President.

D. Payment Deferral

The President may elect to defer the receipt of all or any amount of any award under the Plan and to have such amount credited to an account under and paid according to the terms of the Federal Home Loan Bank of Chicago Benefit Equalization Plan. Election of such deferral shall be subject to the following rules:

(1) An election to defer all or any portion of an award that may be made pursuant to Section III.A of this Plan must be made no later than June 30 of the award Plan Year; and

(2) An election to defer all or any portion of a discretionary award that may be made pursuant to Section VI.A of this Plan must be made prior to January 1 of the award Plan Year.

V. MISCELLANEOUS

Base pay may be adjusted annually by merit increases, but is not affected by any incentive award.

The Bank shall, during each plan year, give the Personnel & Compensation Committee a mid-year status report on progress toward performance targets established hereunder.

The Plan shall be maintained in accordance with and is subject to Federal Housing Finance Board regulations and policies.

VI. OTHER TERMS AND CONDITIONS

A.    Discretionary Authority.

The Bank, with the approval of the Personnel & Compensation Committee, may make adjustments in the criteria established herein for any award period whether before or after the end of the award period and, to the extent it deems appropriate in its sole discretion which shall be conclusive and binding upon all parties concerned, make awards or adjust awards, including making no awards, to compensate for or reflect any significant changes which may have occurred during the award period which alter the basis upon which such performance targets were determined or otherwise. The Bank, with the approval of the Board of Directors, may, in its discretion, make additional awards in such amounts as it deems appropriate to the President in consideration of extraordinary performance by the Bank.

B.    Other Conditions.

(1) No person shall have any claim to be granted an award under the Plan and there is no obligation for uniformity of treatment of eligible employees under the Plan. Except as otherwise required by law, awards under the Plan may not be assigned.

(2) Neither the Plan nor any action taken hereunder shall be construed as giving the President the right to be retained in the employ of the Bank.

(3) The Bank shall have the right to deduct from any award to be paid under the Plan any Federal, state or local taxes required by law to be withheld with respect to such payment.

(4) No award shall be paid to the President for the current plan year if the President's employment ceases prior to the end of the Plan year, whether by resignation, termination or otherwise.

(5) Any award hereunder may be reduced prorata in the event that the Bank's President (i) commences employment with the Bank during the calendar year or (ii) is absent from the Bank (other than regular vacation) during the calendar year whether through approved leave or otherwise, including but not limited to: short or long term disability, leave under the Family and Medical Leave Act, a personal leave of absence or military leave.

C. Plan Administration

(1) The Bank shall have full power to administer and interpret the Plan and to establish rules for its administration. The levels of financial and individual performance referred to in Sections II & III achieved for each award period shall be conclusively determined by the Bank. The determination of financial performance achieved for any award period may, but need not, be adjusted to reflect extraordinary financial items and adjustments or restatements of the financial statements, in the discretion of the Bank. Any such determination shall not be affected by subsequent adjustments or restatements. Any determinations or actions required or permitted to be made by the Bank may be made by the Personnel & Compensation Committee. The Personnel & Compensation Committee in making any determinations under or referred to in the Plan shall be entitled to rely on opinions, reports or statements of officers or employees of the Bank and of counsel, public accountants and other professional or expert persons.

(2) The Plan shall be governed by applicable Federal law.

(3) This Plan supersedes any prior Incentive Compensation Plan for the President for the plan year commencing on January 1, 2010.

D.    Definitions

For purposes of the Plan:

(i) “Beneficiary” shall mean the beneficiary or beneficiaries of the President who are designated in writing by the President on a form provided by, filed with and accepted by the Bank, or in the absence of any such designation, to the beneficiary or beneficiaries of the President who are entitled to receive the benefits of the President which are payable under the qualified defined benefit pension plan sponsored by the Bank or its successor plan.

(ii) “Change of Control” of the Bank shall mean the occurrence at any time of any of the following events:

(1) any person, more than one person acting as a “group” (as defined in section 1.409A-3(i)(5) of the Income Tax Regulations), acquires ownership of equity securities of the Bank that, together with equity securities held by such person or group, constitutes more than 50% of the total voting power of the equity securities of the Bank; provided, however, that if any person or group, is considered to own more than 50% of the total voting power of the equity securities of the Bank, the acquisition of additional equity securities by the same person or group will not be considered a Change of Control under the Plan. An increase in the percentage of equity securities of the Bank owned by any person or group as a result of a transaction in which the Bank acquires its own equity securities in exchange for property will be treated as an acquisition of equity securities of the Bank for purposes of this paragraph; or

(2) during any period of twelve (12) consecutive months, individuals who at the beginning of such period constituted the Board (together with (a) any new or replacement directors whose election by the Board, or (b) whose nomination for election by the Bank's shareholders, was approved by a vote of at least a majority of the directors then still in office who were either directors at the beginning of such period or whose election or nomination for election was previously so approved) cease for any reason to constitute a majority of the directors then in office; or

(3) the Bank sells or transfers 95% or more of its business and/or assets to another bank or other entity.

(iii) “Disability” shall mean the President: (1) is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, or (2) is, by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, receiving income replacement benefits for a period of not less than three (3) months under an accident and health plan covering employees of the Bank.

(iv) “Cause” means any of the following activities by the President: (i) the conviction of the President for a felony, or a crime involving moral turpitude; (ii) the commission of any act involving dishonesty, disloyalty, or fraud with respect to the Bank or any of its members; (iii) willful and continued failure to perform material duties which are reasonably directed by the Board which are consistent with the terms of this Agreement and the position of President and CEO; (iv) gross negligence or willful misconduct with respect to the Bank or any of its members; (v) any violation of Bank policies regarding sexual harassment, discrimination, substance abuse or the Bank's Code of Ethics to the extent such acts would provide grounds for a termination for cause with respect to other employees; or (vi) a material breach by the President of a material provision of this Agreement. No act or failure to act on the part of the President shall be considered “willful” unless it is done, or omitted to be done, by the President in bad faith or without reasonable belief that his action or omission was in the best interests of the Bank.

(v) “Good Reason” shall mean either of the following:

(1) a material reduction by the Bank in the President's base salary, unless such reduction: (i) is associated with a “General Reduction” in compensation among employees in the same job grade or employees who are similarly situated and such reduction is in response to adverse or declining economic conditions; and (ii) does not exceed 5% of the President's base salary amount in effect at the time of the reduction; or

(2) the relocation of the President's principal office assignment to a location more than fifty (50) miles from its location on the date immediately preceding such assignment.

E.    Modification or Termination of Plan.

The Bank may modify or terminate the Plan at any time to be effective at such date as the Bank may determine. A modification may affect present and future awards and eligible employees.

F.    Effective Date.

The Plan shall be effective January 1, 2012.

APPROVED BY THE BOARD OF

DIRECTORS THIS 24TH DAY OF

JANUARY, 2012.

/s/ Peter E. Gutzmer

Its Corporate Secretary

EX-10.2

EXHIBIT 10.2

FEDERAL HOME LOAN BANK OF CHICAGO

KEY EMPLOYEE LONG TERM

INCENTIVE COMPENSATION PLAN

I.    PURPOSE

The purpose of the Federal Home Loan Bank of Chicago Key Employee Long Term Incentive Compensation Plan (the “Plan”) is to provide additional incentive for the required sustained efforts, decisions, innovation and discipline from certain Bank employees who significantly contribute to the attainment of long-term goals of the Federal Home Loan Bank of Chicago (“Bank”), and to enhance the retention of such employees by providing such employees with a competitive compensation opportunity which aligns their interests with those of the Bank's members.

This Plan is an amendment and restatement of the Bank's Key Employee Long Term Incentive Compensation Plan that was approved by the Bank's Board of Directors on December 19, 2008 (the “Prior Plan”), which is hereby superseded and replaced. All participants under the Prior Plan for the 2009 - 2011 Performance Period, as of the date hereof, shall be deemed to be Participants under this Plan for all purposes. Notwithstanding the foregoing, the provisions of Section VII.b of this Plan shall only apply to Performance Periods beginning with the 2009 - 2011 Performance Period.

II.    DEFINITIONS

The following terms shall have the meanings stated below unless the context clearly indicates otherwise.

a. “Board” shall mean the Board of Directors of the Bank.

b. “Code” shall mean the Internal Revenue Code of 1986, as amended, and all Regulations and pronouncements issued thereunder.

c. “Committee” shall mean the Personnel and Compensation Committee of the Board of Directors of the Bank.

d. “Change of Control” of the Bank shall mean the occurrence at any time of any of the following events:

(1) any person, more than one person acting as a “group” (as defined in section 1.409A-3(i)(5) of the Regulations), acquires ownership of equity securities of the Bank that, together with equity securities held by such person or group, constitutes more than 50% of the total voting power of the equity securities of the Bank; provided, however, that if any person or group, is considered to own more than 50% of the total voting power of the equity securities of the Bank, the acquisition of additional equity securities by the same person or group will not be considered a Change of Control under this Agreement. An increase in the percentage of equity securities of the Bank owned by any person or group as a result of a transaction in which the Bank acquires its own equity securities in exchange for property will be treated as an acquisition of equity securities of the Bank for purposes of this paragraph; or

(2) during any period of twelve (12) consecutive months, individuals who at the beginning of such period constituted the Board (together with (a) any new or replacement directors whose election by the Board, or (b) whose nomination for election by the Bank's shareholders, was approved by a vote of at least a majority of the directors then still in office who were either directors at the beginning of such period or whose election or nomination for election was previously so approved) cease for any reason to constitute a majority of the directors then in office; or

(3) the Bank sells or transfers 95% or more of its business and/or assets to another bank or other entity.

e. “Disability” shall mean a Participant: (1) is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, or (2) is, by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, receiving income replacement benefits for a period of not less than three (3) months under an accident and health plan covering employees of the Bank.

f. “ERISA” means the Employee Retirement Income Security Act of 1974, as amended and all Regulations and pronouncements issued thereunder.

g. “Good Reason” shall mean either of the following:

(1) a material reduction by the Bank in the Participant's base salary, unless such reduction: (i) is associated with a “General Reduction” in compensation among employees in the same job grade or employees who are similarly situated and such reduction is in response to adverse or declining economic conditions; and (ii) does not exceed 5% of the Participants' base salary amount in effect at the time of the reduction; or

(2) the relocation of the Participant's principal office assignment to a location more than fifty (50) miles from its location on the date hereof.

h. “Group” shall mean the particular Participant group to which an employee of the Bank has been designated for participation in this Plan for a particular Performance Period pursuant to Article IV.

i. “Normal Retirement Age” means the date the Participant attains age sixty-five (65).

j. “Participant” shall mean the Bank's President and Chief Executive Officer and each other employee of the Bank designated by the Committee to be eligible to participate in the Plan. Each Participant shall be assigned to a Participant Group, as designated by the Committee pursuant to Article IV. An employee's Participant Group can be different for different Performance Periods.

k. “Performance Based Compensation” means compensation that is based on services over a period of at least twelve (12) months and which satisfies the requirements for “performance based compensation” as such term is used in Section 409A(a)(4) of the Code.

l. “Performance Goals” has the meaning given to such term in Article V.

m. “Performance Period” shall mean the period of time selected to measure achievement of Performance Goals.

n. “Performance Period Award” has the meaning given to such term in Article V.

o. “Separation from Service” shall mean the earliest date on which a Participant has incurred a “separation from service,” within the meaning of Section 409A(a)(2) of the Code, with the Bank. For purposes of the foregoing:

(1) a Participant shall be considered to have incurred a Separation from Service with the Bank if the Participant dies, retires, or otherwise has a termination of employment with the Bank, and except as otherwise provided in applicable Regulations, the employment relationship shall be treated as continuing intact while the individual is on military leave, sick leave or other bona fide leave of absence if the period of such leave does not exceed six (6) months or, if longer, so long as the individual retains a right to reemployment with the Bank under an applicable statute or by contract;

(2) a Participant shall not be deemed to have incurred a termination of employment unless the Participant and the Bank reasonably anticipated that the level of bona fide services the Participant would perform after such date (whether as an employee or as an independent contractor) would permanently decrease to no more than twenty percent (20%) of the average level of bona fide services performed (whether as an employee or as an independent contractor) over the immediately preceding thirty-six (36) month period (or the full period of services to the Bank if the Participant has been providing services to the Bank for less than thirty-six (36) months) of the average level of bona fide services performed (whether as an employee or as an independent contractor) over the immediately preceding twelve (12) month period (or the full period of services to the Bank if the Participant has been providing services to the Bank for less than twelve (12) months);

(3) for purposes of this paragraph (e), the term “Bank” shall mean the Bank and any affiliated bank, provided that in applying Section 1563(a)(1), (2), and (3) of the Code for purposes of determining a controlled group of corporations under Section 414(b) of the Code, the language “at least fifty percent (50%)” shall be used instead of “at least eighty percent (80%)” each time it appears in Section 1563(a)(1), (2), and (3) of the Code and in applying Treasury Regulation §1.414(c)-2 for purposes of determining trades or business (whether or not incorporated) that are under common control for purposes of Section 414(c) of the Code, “at least fifty percent (50%)” is used instead of “at least eighty percent (80%)” each place it appears in Regulation §1.414(c)-2; and

(4) where, as part of a sale or other disposition of assets by the Bank to an unrelated service recipient, a Participant would otherwise experience a Separation from Service, the seller and the buyer may specify whether the Participant providing the services to the seller immediately before the asset purchase transaction and providing services to the buyer after and in connection with the asset purchase transaction has experienced a Separation from Service, provided that the asset purchase transaction results from bona fide, arm's length negotiations, all Participants providing services to the seller immediately before the asset purchase transaction and providing services to the buyer after and in connection with the asset purchase transaction are treated consistently for purposes of applying the provisions of any nonqualified deferred compensation plan, and such treatment is specified in writing no later than the closing date of the asset purchase transaction.

III.    ADMINISTRATION

The Plan shall be administered by the Committee. In addition to any authority granted from time to time to the Committee by the Board, the Committee shall have the authority to: (a) prescribe, amend and rescind Plan rules, regulations and procedures consistent with the Plan; (b) approve Performance Goals and Performance Periods (subject to Board approval); (c) determine from time to time the eligibility of employees of the Bank for participation in the Plan and assign such employees to a Participant Group; (d) delegate from time to time the performance of functions in connection with the administration of the Plan to such person or persons as it deems appropriate; and (e) take all other action necessary or appropriate for the administration of the Plan. All such actions by the Committee shall also be consistent with the terms and provisions of the Plan.

The Committee shall operate and administer the Plan, for purposes of applying the provisions of Section 409A of the Code, by adhering to the following rules:

a. Separate Payments. Each separately identified amount to which the Participant is entitled under the Plan shall be treated as a “separate payment.”

b. Right to a Series of Separate Payments. To the extent permissible under Section 409A of the Code, any series of installment payments under the Plan shall be treated as a “right to a series of separate payments.”

c. Short-Term Deferral Exception. Unless otherwise required to comply with Section 409A of the Code, a payment shall not be treated as a “deferral of compensation” (as such term is described in §1.409A-1(b) of the Regulations) if the Participant actually or constructively receives such payment no later than within two and one-half (2½) months after the end of the later of the taxable year of the Participant or Bank in which the payment is no longer subject to a “substantial risk of forfeiture” (as such term is described in §1.409A-1(d) of the Regulations).

d. Separation Pay Exception. Unless otherwise required to comply with Section 409A of the Code, a payment shall not be treated as a “deferral of compensation” (as such term is described in §1.409A-1(b) of the Regulations) if such payment satisfies the following requirements:

(1) the payment is being paid or provided due to the Separation from Service of the Participant, provided, however, the Separation from Service was due to “involuntary termination” of the Participant by the Bank;

(2) the payment being paid or provided does not exceed two (2) times the lesser of:

(A) the Participant's annualized compensation from the Bank for the calendar year in which the involuntary termination of the Participant's employment occurs; and

(B) the maximum dollar amount that may be taken into consideration under a qualified plan pursuant to Section 401(a)(17) of the Code for the calendar year in which the involuntary termination of the Participant's employment occurs; and

(3) the payment is required under the Plan to be paid no later than the last day of the second calendar year following the calendar year in which the involuntary termination of the Participant's employment occurs.

IV.    ELIGIBILITY

Participants in the Plan for each Performance Period shall be the President and Chief Executive Officer (the “President”) and those other Bank employees who are recommended by the President, as approved by the Committee in its sole discretion.

Before the beginning of each Performance Period, the Committee shall approve those Bank employees who shall be eligible to participate in the Plan for that Performance Period and shall designate which Participant Group such employee will be in for purposes of that Performance Period. The eligibility of any Participant for any Performance Period is at all times determined in the sole discretion of the Committee and may be subject to such restrictions as the Committee may in its sole discretion from time to time determine. Restrictions on one Participant's eligibility need not be applicable or the same as restrictions applicable to any other Participant's eligibility.

V.    PERFORMANCE PERIODS AND GOALS

The Committee shall establish the length of each Performance Period for each Group from time to time in its sole discretion.

As of the beginning of each Performance Period, the Committee, with the approval of the Board, shall establish performance criteria, performance goals, performance targets, and target values (collectively the “Performance Goals”) consistent with the purposes of the Plan, as determined in the sole discretion of the Committee, for that Performance Period, and if appropriate, the weight to be given to each such Performance Goal for that Performance Period. The Performance Goals for each Group of Participant for each Performance Period shall be evidenced by worksheets and tables approved by the Committee and such worksheets and tables shall be deemed to be an integral part of this Plan. The Committee, with the approval of the Board, may establish separate Performance Goals for any Group and also shall have the discretion to specify any rules or provisions that may be applicable to any Participant or Performance Period. The Committee may, from time to time thereafter, make appropriate adjustments in Performance Goals to reflect major unforeseen transactions, events or circumstances which in the Committee's opinion alter or affect such goals or the basis or assumptions upon which such goals were determined.

Within ninety (90) days of the beginning of each Performance Period, the Bank's Human Resources Department shall send a letter (“Notification Letter”) to each Participant who has been approved by the Committee to participate in this Plan for that Performance Period. The Notification Letter shall indicate for that Performance Period: (a) the Performance Goals applicable to such category for such Performance Period; and (b) such other information as may be relevant to such Performance Period.

As soon as practicable after the end of each Performance Period, the Committee shall determine the extent to which the Performance Goals for that period were achieved.

Notwithstanding the foregoing, payment to the President of any award determined to be payable under this Plan shall be subject to the satisfaction of any conditions precedent to such payment that may be contained in any employment agreement between the President and the Bank, if applicable.

Notwithstanding any provision in this Article IV to the contrary, the Committee shall take all reasonable actions to qualify compensation that will be paid upon the satisfaction of Performance Goals as Performance-Based Compensation.

VI.    VESTING

Except as provided below, if a Participant is actively employed by the Bank at the end of the Performance Period he shall be vested at the end of such Performance Period in such Participant's benefits under the Plan for that Performance Period as calculated pursuant to Section VI.a. (the “Performance Period Award”).

If a Participant dies, becomes Disabled, or incurs a Separation from Service on or after attaining his Normal Retirement Age on a date that is not more than twelve (12) monthsbefore the end of a Performance Period, such Participant shall be vested at the end of the corresponding Performance Period in the Performance Period Award he would have received had his employment with the Bank continued to the end of the Performance Period, multiplied by a fraction, the numerator of which is the number of full months he was employed by the Bank during the Performance Period (excluding any period of Disability in excess of three months), and the denominator of which is the total number of months in the Performance Period. For purposes of clarity, if a Participant dies, becomes Disabled, or incurs a Separation from Service on or after attaining his normal Retirement Age on a date that is more than twelve (12) months before the end of a Performance Period, then such Participant shall not be vested in any benefits or rights under this Plan for such Performance Period.

In the event of: (i) a Change of Control; or (ii) a termination of the Participant's employment by the Participant for Good Reason, the Participant shall be fully vested in any Performance Period Award to the extent an award is applicable at the end of the corresponding Performance Period. Pursuant to Article IV, in the event of a Change of Control, the Committee, in its sole discretion and subject to Board approval, may make such adjustments and changes to the Performance Criteria and Performance Period as it may deem appropriate in the circumstances.

Any award allocation hereunder may be reduced prorata in the event that a Participant (1) commences employment with the Bank during a Performance Period, or (2) is absent from the Bank (other than regular vacation) during a Performance Period whether through approved leave or otherwise, Disability, leave under the Family and Medical Leave Act, a personal leave of absence or military leave. Notwithstanding the foregoing, no employee commencing employment with the Bank more than one-half (1/2) of the way through any subsequent Performance Period, shall be entitled to participate in this Plan for such Performance Period.

VII.    BENEFITS

a. Benefit Value. The benefits to a Participant under the Plan will be the amount determined by multiplying the Participant's base salary in effect on the last day of the Performance Period or the last day of the Participant's employment, as the case may be,by the multiplier determined in accordance with the Performance Goals based upon the achievement of the Performance Goals as established and determined by the Committee; provided, however, that notwithstanding that the Committee has made a determination that the Performance Goals for a Performance Period have been achieved, the Committee in its sole discretion shall determine whether an award shall be made to Plan Participants for such Performance Period without the consent of any Participant. The Committee also may, to the extent it deems appropriate in its sole discretion, which shall be conclusive and binding upon all parties concerned, make awards or adjust awards, including making no awards, to compensate for or reflect any significant changes which may have occurred during the Performance Period which alter the basis upon which the Performance Goals were determined or otherwise. Immediately following the completion of the Performance Period and the determination of the award benefit by the Committee, each eligible Participant will become vested in such benefit in accordance with the vesting rules in Article V, except as such benefit may become subject to the provisions of Section VII.b below.

b. Recovery of Undue Incentives. The following provisions shall apply only to the Bank's President and members of the Bank's Executive Team for a Performance Period (the President and such Executive Team members are referred to in this section as the “Affected Officers”). An officer will be deemed to be an Affected Officer for any Performance Period during which he or she was an Executive Team member for any part of such Performance Period. Any undue incentives paid to an Affected Officer based on the purported achievement of financial or operational goals under this Plan for a Performance Period that subsequently are deemed to be materially inaccurate, misstated, or misleading shall be recoverable from the Affected Officer by the Bank for a period of up to three (3) years following the dissemination of the inaccuracy, misstatement, or misleading information. This incentive recovery provision shall only apply to Performance Periods for which the Performance Goals are later determined to have not been achieved as a result of the inaccurate, misstated, and/or misleading information.

Inaccurate, misstated, and/or misleading achievement of financial or operational goals include, but are not limited to, material inaccuracies, misstatements, and/or misleading information relating to financial reporting or award performance metric criteria for the related Performance Period as determined by the Board or materially understated credit risk, market risk, operational risk, or expenses. “Undue incentives” with respect to an Affected Officer means the amount of any payment under this Plan in excess of what would have been paid to the Affected Officer if the purported achievement of financial or operational goals had not been inaccurate, misstated, or misleading. The value of any benefit to an Affected Officer under this Plan related to an undue incentive shall be reduced and/or recovered by the Bank to the fullest extent possible by a variety of means, which may include reduction of future incentive awards and/or reimbursement of the Bank by the Affected Officer.

c. Time of Payment. Except as otherwise provided for herein, payments due hereunder for vested benefits will be made within two and one-half (2 ½) months following the end of the Performance Period in which such benefits vested.

d. Form of Payment. A Participant will receive a distribution from the Plan in the form of a lump sum. The Committee may prescribe such rules as it deems necessary regarding the payment of benefits.

VIII.    DESIGNATION OF BENEFICIARY

In the event of the death of a Participant, all benefits to which that Participant is entitled but which are unpaid at the time of his death shall be paid to the beneficiary or beneficiaries of that Participant who are designated in writing by the Participant on a form provided by, filed with and accepted by the Bank, or in the absence of any such designation, to the beneficiary or beneficiaries of that Participant who are entitled to receive the benefits of that Participant which are payable under the qualified defined benefit pension plan sponsored by the Bank or its successor plan.

IX.    AMENDMENT OR TERMINATION OF PLAN

The Bank may terminate, amend or modify this Plan at any time and from time to time; provided, however, any such termination, amendment or modification may not divest any Participant of any of his benefits under this Plan which are vested as of the date of such termination, amendment or modification.

a. General Rule. The Bank reserves the right to terminate or amend this Plan at any time and from time to time; provided, however, that except as otherwise provided in Section (b) of this Article VII, no termination or amendment of the Plan shall accelerate the payment of benefits under the Plan in violation of Section 409A of the Code. To the extent that the Committee does not accelerate the timing of distributions on account of the Plan termination, payment of any remaining benefits under the Plan shall be made at the same time and in the same form as such distribution would have been based upon the most recent effective election made by the Participant as in effect at the time of the Plan termination.

b. Terminations and Liquidations Subject to Certain Conditions. To the extent otherwise permitted by Section 409A of the Code and the Regulations thereunder, the Bank may terminate and liquidate the Plan if the following requirements are met:

(1) the termination and liquidation does not occur proximate to a downturn in the financial health of the Bank;

(2) the Bank terminates and liquidates all plans, agreements, methods, programs and other arrangements sponsored by the Bank that would be aggregated with any terminated and liquidated plans, agreements, methods, programs and other arrangements under §1.409A-1(c) of the Regulations if the Participant had deferrals of compensation under such plans, agreements, methods, programs and other arrangements;

(3) no payments in liquidation of the Plan are made within twelve months (12) of the date the Bank takes all necessary action to irrevocably terminate and liquidate the Plan, other than payments that would be payable under the terms of the Plan if the action to terminate and liquidate the Plan had not been taken;

(4) all payments are made within twenty-four (24) months of the date the Bank takes all necessary action to irrevocably terminate and liquidate the Plan; and

(5) the Bank does not adopt a new plan that would be aggregated with any terminated and liquidated plan under applicable Treasury Regulations if the same Participant was a employee in both plans, at any time within three (3) years following the date the Bank takes all necessary action to irrevocably terminate and liquidate the Plan.

c. Compliance with Code Section 409A. This Plan shall be construed in a manner consistent with the applicable requirements of Section 409A of the Code, and the Committee, in its sole discretion and without the consent of any Participant or beneficiary may amend the provisions of the Plan if and to the extent that the Committee determines that such amendment is necessary or appropriate to comply with the applicable requirements of Section 409A of the Code.

X. LIMITED RESTRICTIONS ON SETTING ASIDE OR RESERVING ASSETS

Notwithstanding the foregoing provisions in this Plan to the contrary, if the Participant is an “applicable covered employee” (defined below), then no amounts or benefits due a Participant shall be transferred to a trust or otherwise set aside or reserved pursuant to any other arrangement during any “restricted period” (defined below) with respect to the qualified defined benefit plan sponsored by the Bank or its successor plan. For these purposes:

a. Restricted Period. The term “restricted period” means (1) any period during which the qualified defined benefit plan sponsored by the Bank or its successor plan is in “at-risk status” (as defined in Section 430(i) of the Code), (2) any period in which the sponsor of the qualified defined benefit plan is a debtor in a case under Title 11, United States Code, or similar Federal or State law, and (3) the twelve (12) month period beginning on the date which is six (6) months before the termination date of the qualified defined benefit plan if, as of the termination date, the assets of the qualified defined benefit plan are not sufficient for pay all benefit liabilities (within the meaning of Section 4041 of ERISA) under the qualified defined benefit plan;

b. Applicable Covered Participant. The term “applicable covered participant” means any (1) covered participant of the sponsor of the qualified defined benefit plan, (2) covered participant of any member of a controlled group that includes the sponsor of the qualified defined benefit plan, and (3) former employee who was a covered employee at the time of termination of employment with the sponsor of the qualified defined benefit plan or any member of a controlled group that includes the plan sponsor; and

c. Covered Participant. The term “covered participant” means an individual described in Section 162(m)(3) of the Code or an individual subject to the requirements of Section 16(a) of the Securities Exchange Act of 1934.

XI.    GENERAL PROVISIONS

a. No Right of Continued Employment. Nothing contained in the Plan shall give any Participant the right to be retained in the employment of the Bank or affect the right of the Bank to dismiss any Participant.

b. No Right to Continued Participation or Payments. The participation in this Plan by a Participant for a particular Performance Period shall not guarantee a Participant the right to participate in the Plan in any subsequent Performance Periods. The payment of any Plan benefits for any Performance Period shall not guarantee a Participant the right to receive any such award or benefits for any subsequent Performance Period.

c. No Right of Transfer. The interests of persons entitled to benefits under the Plan

are not subject to their debts or other obligations and, except for tax withholding requirements or as otherwise specifically provided herein, may not be voluntarily or involuntarily sold, transferred, alienated, assigned or encumbered.

d. Withholding for Taxes. The Bank shall have the right to deduct from all amounts paid under this Plan any taxes required by federal, state or local law to be withheld with respect to such payments.

e. Special Compensation. Except as otherwise provided by law, benefits received

under the Plan shall not be included or taken into account in determining benefits under pension, retirement, profit sharing, group insurance, or any other benefit plan maintained by the Bank, unless so provided in such plan. Neither the Bank nor the Committee guarantee in any way the deferral of tax liability if a Participant defers the payment of Plan benefits.

f. Law to Govern. All questions pertaining to the construction, regulation, validity and effect of the provisions of the Plan shall be determined in accordance with applicable Federal law.

g. Funding of Benefits. Benefits payable hereunder to or on account of any Participant shall be paid directly by the Bank from its general assets. The Bank shall not be required to segregate on its books or otherwise set aside any amount to be used for the payment of benefits under this Plan.

h. Interpretation. The Committee shall have the sole and complete authority to

interpret the provisions of and decide all disputes arising under the Plan, which interpretations and decisions shall be final and binding on all parties having any interests arising under or by virtue of the Plan.

i. Gender and Number. Except where otherwise indicated by the context, any masculine term used herein also shall include the feminine; the plural shall include the singular and the singular shall include the plural.

j. Litigation. If any Participant, former Participant or beneficiary shall bring a suit or proceeding against the Committee or the Bank, or if any dispute shall arise as to the person or persons to whom payment or delivery of any funds shall be made by the Bank, the costs (including attorneys' fees) to the Bank of defending the action, where the result is adverse to the complainant, or pursuant to the authorization of the court or other forum in which the suit or proceeding is brought, shall be charged against the Plan benefits of the applicable Participant, former Participant or beneficiary, and only the excess of such Plan benefits, if any, over the amount of such costs shall be payable by the Bank.

k. Effective Date. The Plan shall be effective beginning January 1, 2012 until modified or revoked by the Bank.

l. Federal Housing Finance Agency. This Plan shall be maintained in accordance with and is subject to Federal Housing Finance Agency regulations and policies.

APPROVED BY THE BOARD OF

DIRECTORS THIS 15TH DAY OF

DECEMBER, 2011

/s/ Peter E. Gutzmer

Its Corporate Secretary

EX-10.3

EXHIBIT 10.3

FEDERAL HOME LOAN BANK OF CHICAGO

EXECUTIVE INCENTIVE COMPENSATION PLAN

I. PURPOSE

Members of the Bank's Executive Team (excluding the President & CEO) are eligible to participate in the Federal Home Loan Bank of Chicago Executive Incentive Compensation Plan ("Plan"). The purpose of the Plan is to give a select group of management and highly-compensated employees strong incentives to make difficult decisions and to expend exceptional efforts to enhance the financial performance of the Bank.

Incentive compensation is to be awarded by the President & CEO with approval of the Personnel & Compensation Committee of the Board of Directors (the “Board”) in accordance with the terms and conditions in this Plan for each calendar year (a “Plan Year”).

II. ELIGIBILITY FOR AWARD

To receive an award under the Plan, the following eligibility conditions must be satisfied:

A.The recipient is a member of the Bank's Executive Team (excluding the President & CEO) during the Plan Year or is another senior officer designated by the President & CEO to participate in the Plan;

B.The recipient has defined and satisfied personal goals and other performance expectations, as established and approved by the President & CEO, and the recipient has achieved specific levels of job performance for the Plan Year; and

C.The recipient displays, in the judgment of the President & CEO, a commitment to the Bank as a whole and team spirit.

III. PLAN CRITERIA AND MAXIMUM AWARD PERCENTAGE

A.Plan Criteria

The Plan criteria consist of a series of corporate goals established annually ("Bank Criteria") based upon the approved Business Plan for the Plan Year. The Bank Criteria will be communicated within the first three (3) months of each Plan Year and will specify:

(i) Bank Criteria description;

(ii) Plan Year Performance Target for each of the Bank Criteria; and

(iii) Target Value or weighting attributed to each of the Bank Criteria.

The Bank Criteria, Performance Targets and Target Values for a Plan Year shall be established by the Personnel & Compensation Committee.

B.Plan Administration

The Maximum Award Percentage is calculated by calculating the actual Plan Year performance as a percent of target for each of the Bank Criteria separately, multiplying the results for each criterion by its associated Target Value and adding the resulting totals to calculate the Award Coefficient Factor.

The total Award Coefficient Factor is applied to the Award Formula Table to determine the Maximum Award Percentage. The Maximum Award Percentage and the Award Formula Table are established for each Plan Year and communicated as part of the Plan Worksheet for that Plan Year.

After the Maximum Award Percentage is calculated for a Plan Year, the President & CEO shall establish an award pool for this Plan and determine the award to be made to each recipient, in his sole discretion. Individual awards will be approved by the Personnel & Compensation Committee.

C.Discretionary Awards

In any Plan Year, the President & CEO may establish a discretionary bonus pool which may be used to grant individual Discretionary Awards as set forth in this Section III.C. The amount of such bonus pool shall be determined at the discretion of the President & CEO up to a percentage of the aggregate incentive award opportunity (base salary x Maximum Award Percentage) for all eligible recipients in a Plan Year, as approved by the Personnel & Compensation Committee. If the President & CEO has established a discretionary bonus pool for a Plan Year, the President & CEO shall have the authority to grant an additional incentive award ("Discretionary Award") to any recipient who is otherwise eligible to receive an incentive award under this Plan for the Plan Year. The determination of the recipients of Discretionary Awards and the amount of the Discretionary Award for each such recipient shall be in the sole discretion of the President & CEO, provided that the aggregate amount of Discretionary Awards granted in any Plan Year shall not exceed the amount of the discretionary bonus pool previously determined by the President & CEO for such year. A Discretionary Award is made to a recipient in addition to the incentive award made to such recipient pursuant to Section III.B of this Plan and need not be related to the recipient's base compensation. The President shall not be required to distribute the full amount of any discretionary bonus pool. All Discretionary Awards shall be deemed to be an "award" for all purposes under this Plan.

The Personnel & Compensation Committee shall receive a report in a Plan Year where Discretionary Awards are granted.

IV. FORM AND TIME OF PAYMENT; RECOVERY OF UNDUE INCENTIVES

A.Form

Payment of all awards shall be made in cash. Awards are payable following a Plan Year on the payment date (as established from time to time), after results are reported and payments, if any, are approved by the [President & CEO]. To receive an award, the participant in this Plan must be employed by the Bank on the Payment Date.

B.Notwithstanding the foregoing,

(1) The award, if the Plan participant dies while still employed at the Bank but prior to the Payment Date, shall be payable to his beneficiary, heirs or legatees, as provided by law, within sixty (60) days of such event.

(2) The award if the Plan participant (i) becomes Disabled, or (ii) attains age 60 and retires (for purposes of the Financial Institutions Retirement Fund) from active employment at the Bank prior to the Payment Date, shall be payable within sixty (60) days of such event.

(3) In the event of: (i) a termination of the Plan participant's employment by the participant for Good Reason, or (ii) the termination of the Plan participant's employment by the Bank without Cause, in either case after the end of the Plan Year but before the Payment Date, the award shall be payable to the participant within sixty (60) days of such event.

(4) Should any income tax become due based on payments to the Plan participant, such amount of tax shall become immediately available for withdrawal.

C.Recovery of Undue Incentives.

A member of the Executive Team will be deemed to be an “Affected Officer” for any Plan Year during which he or she was an Executive Team member for any part of such Plan Year. Any undue incentives paid to an Affected Officer based on the purported achievement of financial or operational goals under this Plan for a Plan Year that subsequently are deemed to be materially inaccurate, misstated, or misleading shall be recoverable from the Affected Officer by the Bank for a period of up to three (3) years following the dissemination of the inaccuracy, misstatement, or misleading information. This incentive recovery provision shall only apply to Plan Years for which the Performance Targets are later determined to have not been achieved as a result of the inaccurate, misstated, and/or misleading information.

Inaccurate, misstated, and/or misleading achievement of financial or operational goals include, but are not limited to, material inaccuracies, misstatements, and/or misleading information relating to financial reporting or award performance metric criteria for the related Plan Year as determined by the Board or materially understated credit risk, market risk, operational risk, or expenses. “Undue incentives” with respect to an Affected Officer means the amount of any payment under this Plan in excess of what would have been paid to the Affected Officer if the purported achievement of financial or operational goals had not been inaccurate, misstated, or misleading. The value of any benefit to an Affected Officer under this Plan related to an undue incentive shall be reduced and/or recovered by the Bank to the fullest extent possible by a variety of means, which may include reduction of future incentive awards and/or reimbursement of the Bank by the Affected Officer.

D.Payment Deferral

An award recipient may elect to defer the receipt of all or any amount of any award under the Plan and to have such amount credited to an account under and paid according to the terms of the Federal Home Loan Bank of Chicago Benefit Equalization Plan. Election of such deferral shall be subject to the following rules:

(1) An election to defer all or any portion of an award that may be made pursuant to Section III.B of this Plan must be made no later than June 30 of the award Plan Year; and

(2) An election to defer all or any portion of a discretionary award that may be made pursuant to Section III.C of this Plan must be made prior to January 1 of the award Plan Year.

IV. MISCELLANEOUS

Base pay may be adjusted annually by merit increases, but is not affected by any incentive award.

The Bank shall during each Plan Year give the Personnel & Compensation Committee a mid-year status report on progress toward performance targets established hereunder.

The Plan and any awards hereunder are subject to Federal Housing Finance Agency regulations and policies.

V. OTHER TERMS AND CONDITIONS

A.Discretionary Authority

The Bank, with the approval of the Personnel & Compensation Committee, may make adjustments in the criteria established herein for any award period whether before or after the end of the award period and, to the extent it deems appropriate in its sole discretion which shall be conclusive and binding upon all parties concerned, make awards or adjust awards, including making no awards, to compensate for or reflect any significant changes which may have occurred during the award period which alter the basis upon which such performance targets were determined or otherwise. The Bank, with the approval of the

Personnel & Compensation Committee, may, in its discretion, make additional awards in such amounts as it deems appropriate in consideration of extraordinary performance by the Bank.

B.Other Conditions

(1) No person shall have any claim to be granted an award under the Plan and there is no obligation for uniformity of treatment of eligible employees under the Plan. Except as otherwise required by law, awards under the Plan may not be assigned.

(2) Neither the Plan nor any action taken hereunder shall be construed as giving to any employee the right to be retained in the employ of the Bank.

(3) The Bank shall have the right to deduct from any award to be paid under the Plan any Federal, state or local taxes required by law to be withheld with respect to such payment.

(4) No award shall be paid to an employee for the current Plan Year if such employee's employment ceases prior to the end of the Plan Year, whether by resignation, termination or otherwise.

(5) Any award hereunder may be reduced pro rata in the event that an award recipient (i) commences employment with the Bank during the Plan Year, (ii) joins the Executive Team during the course of a Plan Year, or (iii) is absent from the Bank (other than regular vacation) during the Plan Year whether through approved leave or otherwise, including but not limited to: short or long term disability, leave under the Family and Medical Leave Act, a personal leave of absence or military leave.

C.Plan Administration

(1) The Bank shall have full power to administer and interpret the Plan and to establish rules for its administration. The levels of financial and individual performance, established pursuant to this Plan, achieved for each award period shall be conclusively determined by the Bank. Any determinations or actions required or permitted to be made by the Bank may be made by the President & CEO. The Bank and President & CEO of the Bank in making any determinations under or referred to in the Plan shall be entitled to rely on opinions, reports or statements of officers or employees of the Bank and of counsel, public accountants and other professional or expert persons.

(2) The Plan shall be governed by applicable Federal law.

(3) The Plan shall be construed in a manner consistent with the applicable requirements of Section 409A of the Code, and the Personnel & Compensation Committee, in its sole discretion and without the consent of any recipient or beneficiary may amend the provisions of the Plan if and to the extent that the Personnel & Compensation Committee determines that such amendment is necessary or appropriate to comply with the applicable requirements of Section 409A of the Code.

(4) This Plan supersedes the prior Executive Incentive Compensation Plan for the Plan Year commencing on January 1, 2012.

D.    Definitions

For purposes of the Plan:

(i) “Beneficiary” shall mean the beneficiary or beneficiaries of the recipient who are designated in writing by the recipient on a form provided by, filed with and accepted by the Bank, or in the absence of any such designation, to the beneficiary or beneficiaries of the recipient who are entitled to receive the benefits of the recipient which are payable under the qualified defined benefit pension plan sponsored by the Bank or its successor plan.

(ii) “Change of Control” of the Bank shall mean the occurrence at any time of any of the following events:

(1) any person, more than one person acting as a “group” (as defined in section 1.409A-3(i)(5) of the Income Tax Regulations), acquires ownership of equity securities of the Bank that, together with equity securities held by such person or group, constitutes more than 50% of the total voting power of the equity securities of the Bank; provided, however, that if any person or group, is considered to own more than 50% of the total voting power of the equity securities of the Bank, the acquisition of additional equity securities by the same person or group will not be considered a Change of Control under the Plan. An increase in the percentage of equity securities of the Bank owned by any person or group as a result of a transaction in which the Bank acquires its own equity securities in exchange for property will be treated as an acquisition of equity securities of the Bank for purposes of this paragraph; or

(2) during any period of twelve (12) consecutive months, individuals who at the beginning of such period constituted the Board (together with (a) any new or replacement directors whose election by the Board, or (b) whose nomination for election by the Bank's shareholders, was approved by a vote of at least a majority of the directors then still in office who were either directors at the beginning of such period or whose election or nomination for election was previously so approved) cease for any reason to constitute a majority of the directors then in office; or

(3) the Bank sells or transfers 95% or more of its business and/or assets to another bank or other entity.

(iii) “Disability” shall mean a recipient: (1) is unable to engage in any substantial gainful activity by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, or (2) is, by reason of any medically determinable physical or mental impairment which can be expected to result in death or can be expected to last for a continuous period of not less than twelve (12) months, receiving income replacement benefits for a period of not less than three (3) months under an accident and health plan covering employees of the Bank.

(iv) “Good Reason” shall mean either of the following:

(1) a material reduction by the Bank in the recipient's base salary, unless such reduction: (i) is associated with a “General Reduction” in compensation among employees in the same job grade or employees who are similarly situated and such reduction is in response to adverse or declining economic conditions; and (ii) does not exceed 5% of the recipients' base salary amount in effect at the time of the reduction; or

(2) the relocation of the recipient's principal office assignment to a location more than fifty (50) miles from its location on the date immediately preceding such assignment.

E.Modification or Termination of Plan

The Bank may modify or terminate the Plan at any time to be effective at such date as the Bank may determine. A modification may affect present and future awards and eligible employees.

F.Effective Date.

The Plan shall be effective January 1, 2012.

APPROVED BY THE BOARD OF

DIRECTORS ON THE 24TH DAY

OF JANUARY, 2012.

/s/ Peter E. Gutzmer

Its Corporate Secretary

EX-31.1

Exhibit 31.1

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

by the Principal Executive Officer

I, Matthew R. Feldman, certify that:

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

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

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

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

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

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

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

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

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

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

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

Date:	August 10, 2012	By:	/s/ Matthew R. Feldman
		Name:	Matthew R. Feldman
		Title:	President and Chief Executive Officer
			(Principal Executive Officer)

EX-31.1

Exhibit 32.2

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

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

by the Principal Financial Officer

In connection with the Quarterly Report of the Federal Home Loan Bank of Chicago (the “Bank”) on Form 10-Q for the period ended June 30, 2012 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Roger D. Lundstrom, Executive Vice President, Financial Information and Chief Financial Officer certify to my knowledge, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350), that:

1.  The 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 Bank.

Date:	August 10, 2012	By:	/s/ Roger D. Lundstrom
		Name:	Roger D. Lundstrom
		Title:	Executive Vice President, Financial Information and Chief Financial Officer
			(Principal Financial Officer)

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

EX-31.2

Exhibit 31.2

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

by the Principal Financial Officer

I, Roger D. Lundstrom, certify that:

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

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

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

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

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

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

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

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

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

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

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

Date:	August 10, 2012	By:	/s/ Roger D. Lundstrom
		Name:	Roger D. Lundstrom
		Title:	Executive Vice President, Financial
			Information & Chief Financial Officer
			(Principal Financial Officer)

EX-32.1

Exhibit 32.1

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

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

by the Principal Executive Officer

In connection with the Quarterly Report of the Federal Home Loan Bank of Chicago (the “Bank”) on Form 10-Q for the period ended June 30, 2012 as filed with the Securities and Exchange Commission on the date hereof (the “Report”), I, Matthew R. Feldman, President and Chief Executive Officer, certify to my knowledge, pursuant to Section 906 of the Sarbanes-Oxley Act of 2002 (18 U.S.C. Section 1350), that:

1.  The 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 Bank.

Date:	August 10, 2012	By:	/s/ Matthew R. Feldman
		Name:	Matthew R. Feldman
		Title:	President and Chief Executive Officer
			(Principal Executive Officer)

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

XML

Interest Income and Interest Expense Parenthetical (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Schedule of Investment Income, Reported Amounts, by Category [Line Items]
Fair value hedge adjustments - Advances	$ (2)	$ (7)	$ (24)	$ (7)

XML

Allowance for Credit Losses (Narratives) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Total Severity Rate on MPF Loan Pool and Impaired Collateral Dependent MPF Loans	38.00%	35.00%
Weighted Average Credit Loss Severity Rate	22.00%	19.30%
Real estate owned	$ 46	$ 46

XML

Investment Securities (Litigation) (Details) (October 15 2010 Litigation [Member], Private-label residential MBS [Member], USD $) In Billions, unless otherwise specified	Oct. 25, 2010 bonds
October 15 2010 Litigation [Member] | Private-label residential MBS [Member]
Loss Contingencies [Line Items]
Number of private label MBS bonds purchased by us	64
Aggregate original principal amount of private label MBS bonds purchased by us	$ 4.29

XML

Fair Value Accounting (Carrying Value and Fair Value of Financial Instruments) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Derivative assets	$ 52		$ 40
Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	24
Federal Funds Sold	0
Securities purchased under agreements to resell	0
Trading securities	0
Available-for-sale securities	0
Held-to-maturity securities	0
Advances	0
MPF loans held in portofolio, net	0
Accrued interest receivable	0
Derivative assets	0
Deposits	0
Securities sold under agreements to repurchase	0
Accured interest payable	0
Mandatorily redeemable capital stock	10
Derivative liabilities	0
Subordinated notes	0
Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0
Federal Funds Sold	1,697
Securities purchased under agreements to resell	2,100
Trading securities	2,046
Available-for-sale securities	23,834
Held-to-maturity securities	9,605
Advances	16,093
MPF loans held in portofolio, net	12,926
Accrued interest receivable	135
Derivative assets	1,434	[1]
Deposits	727
Securities sold under agreements to repurchase	0
Accured interest payable	171
Mandatorily redeemable capital stock	0
Derivative liabilities	2,960
Subordinated notes	1,138	[1]
Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0
Federal Funds Sold	0
Securities purchased under agreements to resell	0
Trading securities	0
Available-for-sale securities	62
Held-to-maturity securities	1,731
Advances	0
MPF loans held in portofolio, net	184
Accrued interest receivable	0
Derivative assets	36	[1]
Deposits	0
Securities sold under agreements to repurchase	0
Accured interest payable	0
Mandatorily redeemable capital stock	0
Derivative liabilities	0
Subordinated notes	0
Netting Adjustments/Cash Collateral [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	0	[2]
Federal Funds Sold	0	[2]
Securities purchased under agreements to resell	0	[2]
Trading securities	0	[2]
Available-for-sale securities	0	[2]
Held-to-maturity securities	0	[2]
Advances	0	[2]
MPF loans held in portofolio, net	0	[2]
Accrued interest receivable	0	[2]
Derivative assets	(1,418)	[2]
Deposits	0	[2]
Securities sold under agreements to repurchase	0	[2]
Accured interest payable	0	[2]
Mandatorily redeemable capital stock	0	[2]
Derivative liabilities	(2,890)	[2]
Subordinated notes	0	[2]
Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	24		1,002
Federal Funds Sold	1,697		950
Securities purchased under agreements to resell	2,100		825
Trading securities	2,046		2,935
Available-for-sale securities	23,896		24,316
Held-to-maturity securities	10,597		11,477
Advances	15,797		15,291
MPF loans held in portofolio, net	12,162		14,118
Accrued interest receivable	135		153
Derivative assets	52		40
Deposits	727		648
Securities sold under agreements to repurchase	0		400
Accured interest payable	171		203
Mandatorily redeemable capital stock	10		4
Derivative liabilities	70		206
Subordinated notes	1,000		1,000
Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Cash and due from banks	24		1,002
Federal Funds Sold	1,697		950
Securities purchased under agreements to resell	2,100		825
Trading securities	2,046		2,935
Available-for-sale securities	23,896		24,316
Held-to-maturity securities	11,336		12,131
Advances	16,093		15,663
MPF loans held in portofolio, net	13,110		15,177
Accrued interest receivable	135		153
Derivative assets	52		40
Deposits	727		648
Securities sold under agreements to repurchase	0		400
Accured interest payable	171		203
Mandatorily redeemable capital stock	10		4
Derivative liabilities	70		206
Subordinated notes	1,138		1,127
Discount Notes [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes	0
Discount Notes [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes	23,439
Discount Notes [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes	0
Discount Notes [Member] | Netting Adjustments/Cash Collateral [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes	0	[2]
Discount Notes [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes	23,439		25,404
Discount Notes [Member] | Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Discount notes	23,439		25,404
Consolidated Obligation Bonds [Member] | Level 1 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds	0
Consolidated Obligation Bonds [Member] | Level 2 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds	41,787
Consolidated Obligation Bonds [Member] | Level 3 [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds	85	[3]
Consolidated Obligation Bonds [Member] | Netting Adjustments/Cash Collateral [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds	0	[2]
Consolidated Obligation Bonds [Member] | Carrying Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds	39,872		39,880
Consolidated Obligation Bonds [Member] | Estimated Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Bonds	$ 41,872		$ 42,163

[1] Our derivative assets are, in part, secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

[2] Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

[3] Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

XML

Allowance for Credit Losses (Conventional MPF Loans) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended			6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011	Jun. 30, 2012		Jun. 30, 2011	Dec. 31, 2011
Financing Receivable, Allowance for Credit Losses [Line Items]
Total estimated losses outstanding	$ 96			$ 96			$ 97
Less: losses expected to be absorbed by MPF Risk Sharing Structure	(23)			(23)			(23)
Our share of total losses	73			73			74
Less: non-credit losses	(31)	[1]		(31)	[1]		(34)	[1]
Credit losses	42			42			40
Plus: other estimated credit losses in the remaining portfolio	6			6			5
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, Beginning of Period				45
Provision for credit losses	2		3	8		9
Allowance for credit losses, End of Period	48			48
Total recorded investment	12,271			12,271			14,235
Conventional MPF [Member]
Financing Receivable, Allowance for Credit Losses [Roll Forward]
Allowance for credit losses, Beginning of Period	49		38	45		33
Losses charged to the allowance	(3)		(2)	(5)		(3)
Provision for credit losses	2		3			9
Allowance for credit losses, End of Period	48		39	48		39
Specifically identified and individually evaluated for impairment	30			30			26
Homogeneous pools of loans and collectively evaluated for impairment	18			18			19
Individually evaluated for impairment - with an allowance	197			197			204
Collectively evaluated for impairment	9,716			9,716			11,470
Total recorded investment	$ 9,913			$ 9,913			$ 11,674

[1] Non-credit losses represent period costs on Real Estate Owned (REO), for example, real estate taxes and maintenance costs and the economic loss of interest income that was contractually due but which was not recognized in our financial statements as the impaired MPF Loans were placed on nonaccrual status.

XML

Investment Securities (Projected Home Price Recoveries) (Details)	Jun. 30, 2012	Mar. 31, 2012
Minimum [Member]
Recovery Range Annualized % [Line Items]
Assumed current-to-trough home price declines in 3 to 9-month period	0.00%
Projected house price decline rate over 3-month period		1.00%
1 - 6 Months	0.00%
7-18 Month	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]
Assumed current-to-trough home price declines in 3 to 9-month period	6.00%
Projected house price decline rate over 3-month period		4.00%
1 - 6 Months	2.80%
7-18 Month	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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Capital Stock and Mandatorily Redeemable Capital Stock (MRCS) (Tables)

6 Months Ended

Jun. 30, 2012

Capital [Abstract]

Schedule of Minimum Capital Requirements [Table Text Block]

The following table details our minimum capital requirements at June 30, 2012, under our new Capital Plan:

	June 30, 2012
	Required			Actual
Risk-based capital	$	1,501		$	3,364
Capital-to-assets ratio (regulatory)	4.00		%	4.90		%
Regulatory capital	$	2,746		$	3,364
Leverage capital-to-assets ratio (regulatory)	5.00		%	7.35		%
Leverage capital	$	3,432		$	5,046

Detailed components of our Risk-Based Capital were as follows:

	June 30, 2012
Credit risk	$	1,126
Market risk	29
Operations risk	346
Total risk-based capital requirement	$	1,501
Actual permanent capital	$	3,364

In addition, under the FHFA regulation on capital classifications and critical capital levels for the FHLBs, we are adequately capitalized.

At December 31, 2011, prior to conversion to our new Capital Plan, we were subject to a minimum regulatory leverage limit as further discussed in Minimum Capital Requirements prior to Conversion to New Capital Structure on page F-54 in our 2011 Form 10-K. The following table summarizes our regulatory capital requirements as a percentage of total assets at December 31, 2011, before the conversion to our new Capital Plan.

		Regulatory Capital plus Designated Amount of Subordinated Notes
		Requirement in Effect		Actual
	Non-Mortgage Assets	Ratio	Amount	Ratio	Amount
December 31, 2011	19.19%	4.76%	$3,392	6.35%	$4,527

Mandatorily Redeemable Capital Stock Rollforward [Table Text Block]

The following table shows a reconciliation of the dollar amounts in MRCS, along with the number of current and former members owning the related capital stock at period end:

June 30, 2012	Dollar Amount
MRCS at beginning of year	$	4
Capital stock reclassified to MRCS	32
Redemption of MRCS	(26		)
MRCS at end of period a	$	10
Number of stockholders holding MRCS at period end	10

^a  All MRCS outstanding at the end of the period are redeemable in five years.

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Fair Value Accounting (Fair Value Measured on a Nonrecurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Real estate owned	$ 46	$ 46
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity - Private-label residential MBS	0	0
Impaired MPF Loans	0	0
Real estate owned	0	0
Total nonrecurring assets	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity - Private-label residential MBS	0	0
Impaired MPF Loans	0	0
Real estate owned	0	0
Total nonrecurring assets	0	0
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity - Private-label residential MBS	2	9
Impaired MPF Loans	184	193
Real estate owned	14	16
Total nonrecurring assets	$ 200	$ 218

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Allowance for Credit Losses (TDR) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012		Jun. 30, 2012		Dec. 31, 2011
Financing Receivable, Modifications [Line Items]
Maximum period of monthly payment modification			36 months
Maximum monthly payment to housing expense ratio	31.00%		31.00%
Maximum modified term of principal and interest payments			40 years
Incremental interest decrease, percent			0.125%
Floor rate			3.00%
Troubled debt restructurings that were modified during the previous 12 months that subsequently defaulted since the date of the modification			$ 8
Conventional [Member]
Financing Receivable, Modifications [Line Items]
Conventional MPF Loans	15		15		9
Recorded investment in troubled debt restructurings on our conventional MPF Loans that occurred during the reporting periods	4		5
Conventional [Member] | Performing [Member]
Financing Receivable, Modifications [Line Items]
Conventional MPF Loans	11	[1]	11	[1]	6	[1]
Conventional [Member] | Nonperforming [Member]
Financing Receivable, Modifications [Line Items]
Conventional MPF Loans	$ 4	[2]	$ 4	[2]	$ 3	[2]

[1] Includes modified loans that are accruing interest.

[2] Includes all other modified loans, including those that are on nonaccrual status, in foreclosure, or in bankruptcy.

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Commitments and Contingencies (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Loss Contingencies [Line Items]
Expire within one year	$ 5,022	$ 741
Expire after one year	889	555
Total	5,911	1,296
Unsettled consolidated obligation bonds [Member]
Loss Contingencies [Line Items]
Expire within one year	3,815	150
Expire after one year	0	0
Total	3,815	150
Member standby letters of credit [Member]
Loss Contingencies [Line Items]
Expire within one year	286	296
Expire after one year	281	273
Total	567	569
Housing authority standby bond purchase agreements [Member]
Loss Contingencies [Line Items]
Expire within one year	70	44
Expire after one year	396	282
Total	466	326
MPF Xtra mortgage purchase commitments which will be concurrently resold to Fannie Mae [Member]
Loss Contingencies [Line Items]
Expire within one year	603	250
Expire after one year	0	0
Total	603	250
MPF Loan mortgage purchase commitments for portfolio [Member]
Loss Contingencies [Line Items]
Expire within one year	5	1
Expire after one year	0	0
Total	5	1
Advance commitments [Member]
Loss Contingencies [Line Items]
Expire within one year	243	0
Expire after one year	212	0
Total	$ 455	$ 0

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Transactions with Members and Other FHLBs (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Related Party Transaction [Line Items]
Assets - Advances	$ 15,797	$ 15,291
Liabilities - Deposits	727	648
Equity - Capital Stock	1,850	2,402
Related Party Members [Member]
Related Party Transaction [Line Items]
Assets - Advances	2,513	3,515
Liabilities - Deposits	83	69
Equity - Capital Stock	$ 270	$ 399

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Fair Value Accounting (Fair Value Measured on Recurring Basis) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative assets	$ 52		$ 40
Level 3 Assets as a Percentage of Total Assets at Fair Value	0.40%		0.40%
Level 3 Liabilities as a Percentage of Total Liabilities at Fair Value	0.80%		0.60%
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0
Available-for-sale securities	0
Advances	0
Derivative assets	0
Derivative liabilities	0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	2,046
Available-for-sale securities	23,834
Advances	16,093
Derivative assets	1,434	[1]
Derivative liabilities	(2,960)
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0
Available-for-sale securities	62
Advances	0
Derivative assets	36	[1]
Derivative liabilities	0
Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[2]
Available-for-sale securities	0	[2]
Advances	0	[2]
Derivative assets	(1,418)	[2]
Derivative liabilities	2,890	[2]
Fair Value, Measurements, 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
Advances	0		0
Derivative assets	0		0
Total assets at fair value	0		0
Derivative liabilities	0		0
Total liabilities at fair value	0		0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	2,046		2,935
Available-for-sale securities	23,834		24,253
Advances	9		9
Derivative assets	1,434	[3]	1,562	[3]
Total assets at fair value	27,323		28,759
Derivative liabilities	(2,960)	[3]	(2,888)	[3]
Total liabilities at fair value	(14,112)		(16,985)
Fair Value, Measurements, 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	62		63
Advances	0		0
Derivative assets	36	[3]	37	[3]
Total assets at fair value	98		100
Derivative liabilities	0		0
Total liabilities at fair value	(85)		(87)
Fair Value, Measurements, Recurring [Member] | Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[2]	0	[2]
Available-for-sale securities	0	[2]	0	[2]
Advances	0	[2]	0	[2]
Derivative assets	(1,418)	[2]	(1,559)	[2]
Total assets at fair value	(1,418)	[2]	(1,559)	[2]
Derivative liabilities	2,890	[2]	2,682	[2]
Total liabilities at fair value	2,890	[2]	2,682	[2]
Fair Value, Measurements, Recurring [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	2,046		2,935
Available-for-sale securities	23,896		24,316
Advances	9		9
Derivative assets	52		40
Total assets at fair value	26,003		27,300
Derivative liabilities	(70)		(206)
Total liabilities at fair value	(11,307)		(14,390)
Consolidated Obligation Bonds [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated Obligation Bond, Fair Value	0
Consolidated Obligation Bonds [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated Obligation Bond, Fair Value	(41,787)
Consolidated Obligation Bonds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated Obligation Bond, Fair Value	(85)	[4]
Consolidated Obligation Bonds [Member] | Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated Obligation Bond, Fair Value	0	[2]
Consolidated Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated Obligation Bond, Fair Value	0		0
Consolidated Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated Obligation Bond, Fair Value	(7,017)		(2,631)
Consolidated Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated Obligation Bond, Fair Value	(85)	[4]	(87)	[4]
Consolidated Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated Obligation Bond, Fair Value	0	[2]	0	[2]
Consolidated Obligation Bonds [Member] | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated Obligation Bond, Fair Value	(7,102)		(2,718)
U.S. Government & other government related [Member] | Fair Value, Measurements, 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
U.S. Government & other government related [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	1,888		2,737
Available-for-sale securities	820		1,001
U.S. Government & other government related [Member] | Fair Value, Measurements, 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
U.S. Government & other government related [Member] | Fair Value, Measurements, Recurring [Member] | Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[2]	0	[2]
Available-for-sale securities	0	[2]	0	[2]
U.S. Government & other government related [Member] | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	1,888		2,737
Available-for-sale securities	820		1,001
FFELP ABS [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
FFELP ABS [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	7,870		8,159
FFELP ABS [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
FFELP ABS [Member] | Fair Value, Measurements, Recurring [Member] | Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	[2]	0	[2]
FFELP ABS [Member] | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	7,870		8,159
GSE residential MBS [Member] | Fair Value, Measurements, 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
GSE residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	155		195
Available-for-sale securities	12,175		12,132
GSE residential MBS [Member] | Fair Value, Measurements, 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
GSE residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[2]	0	[2]
Available-for-sale securities	0	[2]	0	[2]
GSE residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	155		195
Available-for-sale securities	12,175		12,132
Government-guaranteed residential MBS [Member] | Fair Value, Measurements, 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
Government-guaranteed residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	3		3
Available-for-sale securities	2,969		2,961
Government-guaranteed residential MBS [Member] | Fair Value, Measurements, 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
Government-guaranteed residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	0	[2]	0	[2]
Available-for-sale securities	0	[2]	0	[2]
Government-guaranteed residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	3		3
Available-for-sale securities	2,969		2,961
Private-label residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Private-label residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0		0
Private-label residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	62		63
Private-label residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	0	[2]	0	[2]
Private-label residential MBS [Member] | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Available-for-sale securities	62		63
Discount Notes [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated obligation discount notes	0
Discount Notes [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated obligation discount notes	(23,439)
Discount Notes [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated obligation discount notes	0
Discount Notes [Member] | Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated obligation discount notes	0	[2]
Discount Notes [Member] | Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated obligation discount notes	0		0
Discount Notes [Member] | Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated obligation discount notes	(4,135)		(11,466)
Discount Notes [Member] | Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated obligation discount notes	0		0
Discount Notes [Member] | Fair Value, Measurements, Recurring [Member] | Netting and Collateral [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated obligation discount notes	0	[2]	0	[2]
Discount Notes [Member] | Fair Value, Measurements, Recurring [Member] | Estimated Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Consolidated obligation discount notes	$ (4,135)		$ (11,466)

[1] Our derivative assets are, in part, secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

[2] Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

[3] Our derivative assets are, in part secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

[4] Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

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Summary of Significant Accounting Policies (Policies)

6 Months Ended

Jun. 30, 2012

Accounting Policies [Abstract]

Use of Estimates, Policy [Policy Text Block]

Our accounting and financial reporting policies conform to generally accepted accounting principles in the United States of America (GAAP). The preparation of financial statements in conformity with GAAP requires the extensive use of management's estimates and assumptions that affect the reported amounts of assets and liabilities, as well as the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses. Actual results could differ from those estimates. Prior period amounts have been reclassified to conform to the current period presentation.

Comprehensive Income, Policy [Policy Text Block]

We adopted the new FASB guidance on the presentation of comprehensive income that was issued in June of 2011 effective January 1, 2012. Specifically, we adopted on a retrospective basis and elected to present comprehensive income in two separate consecutive statements. The new guidance did not change the items that are currently reported in our other comprehensive income or when an item of other comprehensive income must be reclassified into net income. As a result, the effect of the new guidance on our financial statements was limited to how we present our financial statements.

Consolidation, Variable Interest Entity, Policy [Policy Text Block]

Our investments in variable interest entities (VIEs) include, but are not limited to, senior interests in private label mortgage-backed securities (MBS) and Federal Family Education Loan Program (FFELP) asset-backed securities (ABS). We have evaluated these VIEs for the periods presented, and determined that we are not required to apply consolidation accounting since we are not the primary beneficiary in any of these VIEs. Excluding contractually required amounts, we have not provided financial or other support (explicitly or implicitly) during the periods presented in our financial statements. Further, we do not intend to provide such support in the future. The carrying amounts and classification of the assets that relate to these VIEs are shown in investment securities in our statements of condition. We have no liabilities related to these VIEs. Our maximum loss exposure for our VIEs is limited to the carrying value.

Loans and Leases Receivable, Troubled Debt Restructuring Policy [Policy Text Block]

In the event a borrower qualifies for a troubled debt restructuring under our program, we typically modify the borrower's monthly payment for a period of up to 36 months to try to achieve a target housing expense ratio of not more than 31% of their monthly qualifying income.   Any and all delinquent interest on the loan may be capitalized as long as the resulting principal balance does not exceed the original principal balance, otherwise all delinquent interest is written off.  Next, we re-amortize the new outstanding balance to reflect a principal and interest payment for a term not to exceed 40 years and attempt to achieve the target housing expense ratio. This results 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 target housing expense ratio is still not met, we reduce the interest rate in 0.125% increments below the original note rate, to a floor rate of 3.00% for up to 36 months, in an effort to further reduce principal and interest payments again, until the target housing expense ratio is met.

Fair Value Measurement, Policy [Policy Text Block]

Fair Value Measurement and Disclosures

In May of 2011, the FASB issued amendments to achieve common fair value measurement and disclosure requirements in U.S. GAAP and International Financial Reporting Standards (IFRS). The amendments serve to clarify the FASB's intent about the application of existing fair value measurement and disclosure requirements, or change a particular principle or requirement for measuring fair value or disclosing information about fair value measurements. The amendments became effective on a prospective basis January 1, 2012. Upon adoption, we elected the “portfolio exception” for purposes of determining the nonperformance risk adjustment, if any, to the fair value of our derivative instruments. The “portfolio exception” allows for the nonperformance risk adjustment to the fair value of our derivative assets and derivative liabilities to be measured based on the net counterparty position (i.e. the price that would be received to sell a net long position or transfer a net short position for a particular credit risk exposure), rather than the individual values of financial instruments within the portfolio (i.e., the gross position). The new guidance did not have a material effect on our operating activities and financial statements at the time of adoption.

Transfers and Servicing of Financial Assets, Policy [Policy Text Block]

Reconsideration of Effective Control for Repurchase Agreements

In April of 2011, the FASB issued an amendment to existing criteria for determining whether or not a transferor has retained effective control over securities sold under agreements to repurchase.  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 amendment became effective on a prospective basis for us beginning January 1, 2012.  The new guidance did not have an effect on our operating activities and financial statements at the time of adoption.

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Investment Securities (Other Than Temporary Impairment) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other than Temporary Impairment, Disclosure [Line Items]
Total OTTI	$ 0	$ (9)	$ (2)	$ (9)
Net Non-credit portion (from) to AOCI	(14)	(14)	(13)	(34)
OTTI Credit Portion	(14)	(23)	(15)	(43)
Prime [Member]
Other than Temporary Impairment, Disclosure [Line Items]
Total OTTI	0	0	0	0
Net Non-credit portion (from) to AOCI	(14)	(17)	(14)	(24)
OTTI Credit Portion	(14)	(17)	(14)	(24)
Alt-A [Member]
Other than Temporary Impairment, Disclosure [Line Items]
Total OTTI	0	0	0	0
Net Non-credit portion (from) to AOCI	0	(1)	0	(6)
OTTI Credit Portion	0	(1)	0	(6)
Subprime [Member]
Other than Temporary Impairment, Disclosure [Line Items]
Total OTTI	0	(9)	(2)	(9)
Net Non-credit portion (from) to AOCI	0	4	1	(4)
OTTI Credit Portion	$ 0	$ (5)	$ (1)	$ (13)

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Investment Securities (Held-to-Maturities Securities) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost Basis	$ 11,013		$ 11,943
OTTI Recognized in AOCI (Loss)	(416)		(466)
Carrying Vallue	10,597	[1]	11,477	[1]
Gross Unrecognized Holding Gains	757		706
Gross Unrecognized Holding Losses	(18)		(52)
Fair Value	11,336		12,131
U.S. Government & Other Government Related [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost Basis	2,594		2,573
OTTI Recognized in AOCI (Loss)	0		0
Carrying Vallue	2,594		2,573
Gross Unrecognized Holding Gains	126		104
Gross Unrecognized Holding Losses	0		0
Fair Value	2,720		2,677
States and Local Housing Agency [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost Basis	26		27
OTTI Recognized in AOCI (Loss)	0		0
Carrying Vallue	26		27
Gross Unrecognized Holding Gains	0		0
Gross Unrecognized Holding Losses	0		0
Fair Value	26		27
GSE residential MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost Basis	5,032		5,761
OTTI Recognized in AOCI (Loss)	0		0
Carrying Vallue	5,032		5,761
Gross Unrecognized Holding Gains	413		423
Gross Unrecognized Holding Losses	0		0
Fair Value	5,445		6,184
Government-guaranteed residential MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost Basis	1,373		1,414
OTTI Recognized in AOCI (Loss)	0		0
Carrying Vallue	1,373		1,414
Gross Unrecognized Holding Gains	41		34
Gross Unrecognized Holding Losses	0		0
Fair Value	1,414		1,448
Private-label residential MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost Basis	1,988		2,168
OTTI Recognized in AOCI (Loss)	(416)		(466)
Carrying Vallue	1,572		1,702
Gross Unrecognized Holding Gains	177		145
Gross Unrecognized Holding Losses	(18)		(52)
Fair Value	1,731		1,795
MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost Basis	8,393		9,343
OTTI Recognized in AOCI (Loss)	(416)		(466)
Carrying Vallue	7,977		8,877
Gross Unrecognized Holding Gains	631		602
Gross Unrecognized Holding Losses	(18)		(52)
Fair Value	$ 8,590		$ 9,427

[1] Fair value of held-to-maturity securities: $11,336 and $12,131.

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Fair Value Accounting (Fair Value Difference Between Fair Value and Remaining Contractual Principal Balance Outstanding) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Fair Value, Option, Quantitative Disclosures [Line Items]
Advances	$ 9	$ 9
Advances [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Unpaid Principal Balance, Advances	9	9
Advances	9	9
Advances, Fair Value Over (Under) UPB	0	0
Consolidated Obligation Bonds [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Consolidated Obligation, Unpaid Principal Balance, Liabilities	(7,020)	(2,630)
Consolidated Obligation Bond, Fair Value	(7,017)	(2,631)
Fair value option adjustments	(3)	1
Discount Notes [Member]
Fair Value, Option, Quantitative Disclosures [Line Items]
Consolidated Obligation, Unpaid Principal Balance, Liabilities	(4,135)	(11,465)
Consolidated obligation discount notes, Fair Value	(4,135)	(11,466)
Fair Value Over (Under) UPB, Discount Notes	$ 0	$ 1

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Transactions with Members and Other FHLBs (Tables)

6 Months Ended

Jun. 30, 2012

Related Party Transactions [Abstract]

Related Party Transactions, by Balance Sheet Grouping [Table Text Block]

The table below summarizes balances we had with our members as defined above as related parties (including their affiliates) as reported in the statements of condition as of the dates indicated. Members represented in these tables may change between periods presented, to the extent that our related parties change, based on changes in the composition of our Board membership.

	June 30, 2012		December 31, 2011
Assets - Advances	$	2,513	$	3,515
Liabilities - Deposits	83		69
Equity - Capital Stock	270		399

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Advances (Details) (USD $)	Jun. 30, 2012		Dec. 31, 2011
Advances [Line Items]
Noncallable/nonputable	$ 12,325,000,000		$ 11,456,000,000
Callable	779,000,000		806,000,000
Puttable	2,486,000,000		2,828,000,000
Total par value	15,590,000,000		15,090,000,000
Advance hedging Adjustments	178,000,000		189,000,000
Other adjustments	29,000,000		12,000,000
Total advances	15,797,000,000		15,291,000,000
Due in one year or less, Amount	6,149,000,000
One to two years, Amount	991,000,000
Two to three years, Amount	1,179,000,000
Three to four years, Amount	1,278,000,000
Four to five years, Amount	1,594,000,000
More than five years, Amount	4,399,000,000
Due in one year or less, Weighted Average Interest Rate	0.85%
One to two years, Weighted Average Interest Rate	2.45%
Two to three years, Weighted Average Interest Rate	2.10%
Three to four years,Weighted Average Interest Rate	2.59%
Four to five years, Weighted Average Interest Rate	3.54%
More than five years, Weighted Average Interest Rate	1.60%	[1]
Total Weighted Average Interest Rate	1.68%
Next Maturity or Call Date, Due in one year or less	6,924,000,000
Next Maturity or Call Date, One to two years	891,000,000
Next Maturity or Call Date, Two to three years	1,179,000,000
Next Maturity or Call Date, Three to four years	928,000,000
Next Maturity or Call Date, Four to five years	1,394,000,000
Next Maturity or Call Date, More than five years	4,274,000,000
Next Maturity or Put Date,Due in one year or less	8,441,000,000
Next Maturity or Put Date, One to two years	980,000,000
Next Maturity or Put Date, Two to three years	1,172,000,000
Next Maturity or Put Date, Three to four years	699,000,000
Next Maturity or Put Date , Four to five years	1,031,000,000
Next Maturity or Put Date, More than five years	3,267,000,000
Advances [Member] | BMO Harris Bank N.A. [Member]
Advances Concentration [Abstract]
Advances outstanding	2,400,000,000
Percentage of total advances outstanding	15.00%
Advances [Member] | Associated Bank, National Association [Member]
Advances Concentration [Abstract]
Advances outstanding	1,900,000,000
Percentage of total advances outstanding	12.00%
Advances [Member] | State Farm Bank, F.S.B [Member]
Advances Concentration [Abstract]
Advances outstanding	$ 1,600,000,000
Percentage of total advances outstanding	10.00%

[1] Weighted average interest rate is due to the inclusion of a significant variable-rate advance.

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Capital Stock and Mandatorily Redeemable Capital Stock (MRCS) (Details) (USD $) In Millions, except Per Share data, unless otherwise specified	3 Months Ended		6 Months Ended						0 Months Ended
	Jun. 30, 2012 stockholders		Jun. 30, 2012 stockholders		Jun. 30, 2011	Dec. 31, 2011	Jun. 30, 2012 Capital Stock Ownership By Third Party [Member] BMO Harris Bank N.A. [Member]	Jun. 30, 2012 Common Class B [Member]	Aug. 15, 2012 Scenario, Forecast [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Capital Stock Par Value	$ 100		$ 100			$ 100		$ 100
Capital Stock, redemption, period of written notice			5 years
Excess capital stock repurchased (including capital stock reclassified as MRCS)	$ 150		$ 650
Excess capital	433		433			1,100
Excess capital stock repurchased			645						150
Capital stock							254
Concentration Risk, Percentage							14.00%
Regulatory Capital Requirements [Abstract]
Risk-based capital, Credit risk	1,126		1,126
Risk-based capital, Market risk	29		29
Risk-based capital, Operations risk	346		346
Risk-based capital, Required	1,501		1,501
Actual Risk-based capital	3,364		3,364
Capital-to-assets ratio (regulatory), Required	4.00%		4.00%
Capital-to-assets ratio (regulatory), Actual	4.90%		4.90%
Regulatory capital, Required	2,746		2,746
Regulatory capital, Actual	3,364		3,364
Leverage capital-to-assets ratio (regulatory), Required	5.00%		5.00%
Leverage capital-to-assets ratio (regulatory), Actual	7.35%		7.35%
Leverage capital, Required	3,432		3,432
Leverage capital, Actual	5,046		5,046
Regulatory Capital plus Designated Amount of Subordinated Notes [Abstract]
Non-Mortgage Assets Ratio						19.19%
Requirement in Effect, Ratio						4.76%
Requirement in Effect, Amount						3,392
Actual Ratio						6.35%
Actual Amount						4,527
Mandatorily Redeemable Capital Stock [Roll Forward]
MRCS at beginning of year			4
Capital stock reclassified to MRCS			32		3
Redemption of MRCS			(26)
MRCS at end of period	$ 10	[1]	$ 10	[1]
Number of stockholders holding MRCS	10		10

[1] All MRCS outstanding at the end of the period are redeemable in five years.

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Derivatives and Hedging Activities (Derivatives in Statement of Income) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Fair value hedges - ineffectiveness net gain (loss)	$ (7)	$ (3)	$ (2)	$ (1)
Cash flow hedges - ineffectiveness net gain (loss)	0	12	2	14
Economic hedges - net gain (loss)	(1)	(13)	3	(31)
Net gains (losses) on derivatives and hedging activities	(8)	(4)	3	(18)
Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Fair value hedges - ineffectiveness net gain (loss)	(7)	(1)	(3)	6
Economic hedges - net gain (loss)	(44)	(25)	(46)	(5)
Other [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Fair value hedges - ineffectiveness net gain (loss)	0	(2)	1	(7)
Interest Rate Swaption [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Economic hedges - net gain (loss)	18	(12)	18	(60)
Interest Rate Caps or Floors [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Economic hedges - net gain (loss)	4	14	(9)	(10)
Interest Rate Futures or TBAs [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Economic hedges - net gain (loss)	0	0	0	0
Net Interest Settlements [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Economic hedges - net gain (loss)	$ 21	$ 10	$ 40	$ 44

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Investment Securities (Significant Inputs) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Significant Inputs for Credit Loss Measurement [Line Items]
Unpaid Principal Balance	$ 613
Prepayment Rates, Weighted Average %	7.00%
Default Rates, Weighted Average %	35.00%
Loss Severities, Weighted Average %	42.00%
Credit Enhancement, Weighted Average %	1.00%
Maximum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	29.00%
Default Rates, Range %	43.00%
Loss Severities, Range %	57.00%
Credit Enhancement, Range %	41.00%
Minimum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	5.00%
Default Rates, Range %	0.00%
Loss Severities, Range %	0.00%
Credit Enhancement, Range %	0.00%
Prime [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Unpaid Principal Balance	590
Prepayment Rates, Weighted Average %	8.00%
Default Rates, Weighted Average %	35.00%
Loss Severities, Weighted Average %	41.00%
Credit Enhancement, Weighted Average %	1.00%
Prime [Member] | Maximum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	29.00%
Default Rates, Range %	43.00%
Loss Severities, Range %	47.00%
Credit Enhancement, Range %	41.00%
Prime [Member] | Minimum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	6.00%
Default Rates, Range %	0.00%
Loss Severities, Range %	0.00%
Credit Enhancement, Range %	0.00%
Prime [Member] | 2006 [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Unpaid Principal Balance	588
Prepayment Rates, Weighted Average %	7.00%
Default Rates, Weighted Average %	35.00%
Loss Severities, Weighted Average %	41.00%
Credit Enhancement, Weighted Average %	1.00%
Prime [Member] | 2006 [Member] | Maximum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	8.00%
Default Rates, Range %	43.00%
Loss Severities, Range %	47.00%
Credit Enhancement, Range %	7.00%
Prime [Member] | 2006 [Member] | Minimum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	6.00%
Default Rates, Range %	30.00%
Loss Severities, Range %	37.00%
Credit Enhancement, Range %	0.00%
Prime [Member] | 2004 & prior [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Unpaid Principal Balance	2
Prepayment Rates, Weighted Average %	29.00%
Default Rates, Weighted Average %	0.00%
Loss Severities, Weighted Average %	0.00%
Credit Enhancement, Weighted Average %	41.00%
Prime [Member] | 2004 & prior [Member] | Maximum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	29.00%
Default Rates, Range %	0.00%
Loss Severities, Range %	0.00%
Credit Enhancement, Range %	41.00%
Prime [Member] | 2004 & prior [Member] | Minimum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	29.00%
Default Rates, Range %	0.00%
Loss Severities, Range %	0.00%
Credit Enhancement, Range %	41.00%
Alt-A [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Unpaid Principal Balance	23
Prepayment Rates, Weighted Average %	5.00%
Default Rates, Weighted Average %	41.00%
Loss Severities, Weighted Average %	57.00%
Credit Enhancement, Weighted Average %	5.00%
Alt-A [Member] | Maximum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	5.00%
Default Rates, Range %	41.00%
Loss Severities, Range %	57.00%
Credit Enhancement, Range %	5.00%
Alt-A [Member] | Minimum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	5.00%
Default Rates, Range %	41.00%
Loss Severities, Range %	57.00%
Credit Enhancement, Range %	5.00%
Alt-A [Member] | 2006 [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Unpaid Principal Balance	$ 23
Prepayment Rates, Weighted Average %	5.00%
Default Rates, Weighted Average %	41.00%
Loss Severities, Weighted Average %	57.00%
Credit Enhancement, Weighted Average %	5.00%
Alt-A [Member] | 2006 [Member] | Maximum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	5.00%
Default Rates, Range %	41.00%
Loss Severities, Range %	57.00%
Credit Enhancement, Range %	5.00%
Alt-A [Member] | 2006 [Member] | Minimum [Member]
Significant Inputs for Credit Loss Measurement [Line Items]
Prepayment Rates, Range %	5.00%
Default Rates, Range %	41.00%
Loss Severities, Range %	57.00%
Credit Enhancement, Range %	5.00%

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Summary of Significant Accounting Policies

6 Months Ended

Jun. 30, 2012

Accounting Policies [Abstract]

Significant Accounting Policies [Text Block]

Summary of Significant Accounting Policies

Unless otherwise noted below, our Summary of Significant Accounting Policies can be found in our 2011 Form 10-K starting on page F-10. The following accounting policies have been revised or updated during 2012:

Changes in Accounting Policies

Fair Value Measurement and Disclosures

In May of 2011, the FASB issued amendments to achieve common fair value measurement and disclosure requirements in U.S. GAAP and International Financial Reporting Standards (IFRS). The amendments serve to clarify the FASB's intent about the application of existing fair value measurement and disclosure requirements, or change a particular principle or requirement for measuring fair value or disclosing information about fair value measurements. The amendments became effective on a prospective basis January 1, 2012. Upon adoption, we elected the “portfolio exception” for purposes of determining the nonperformance risk adjustment, if any, to the fair value of our derivative instruments. The “portfolio exception” allows for the nonperformance risk adjustment to the fair value of our derivative assets and derivative liabilities to be measured based on the net counterparty position (i.e. the price that would be received to sell a net long position or transfer a net short position for a particular credit risk exposure), rather than the individual values of financial instruments within the portfolio (i.e., the gross position). The new guidance did not have a material effect on our operating activities and financial statements at the time of adoption. Refer to Note 15 - Fair Value Accounting for the new disclosures.

Reconsideration of Effective Control for Repurchase Agreements

In April of 2011, the FASB issued an amendment to existing criteria for determining whether or not a transferor has retained effective control over securities sold under agreements to repurchase.  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 amendment became effective on a prospective basis for us beginning January 1, 2012.  The new guidance did not have an effect on our operating activities and financial statements at the time of adoption.

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Derivatives and Hedging Activities (Fair Value Hedges) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Total Gain (Loss) Ineffectiveness Recognized in Derivatives and Hedging Activities	$ (7)		$ (3)		$ (2)		$ (1)
Hedge Adjustments Amortized into Net Interest Income	2		7		24		7
Fair Value Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative	(96)		22		(77)		56
Gain (Loss) on Hedged Item	89		(25)		75		(57)
Total Gain (Loss) Ineffectiveness Recognized in Derivatives and Hedging Activities	(7)		(3)		(2)		(1)
Effect of Derivatives on Net Interest Income	(13)	[1]	10	[1]	(32)	[1]	2	[1]
Hedge Adjustments Amortized into Net Interest Income	(21)	[2]	(27)	[2]	(67)	[2]	(52)	[2]
AFS Securities [Member] | Fair Value Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative	(113)		(99)		(77)		(84)
Gain (Loss) on Hedged Item	109		97		75		82
Total Gain (Loss) Ineffectiveness Recognized in Derivatives and Hedging Activities	(4)		(2)		(2)		(2)
Effect of Derivatives on Net Interest Income	(33)	[1]	(35)	[1]	(65)	[1]	(67)	[1]
Hedge Adjustments Amortized into Net Interest Income	0	[2]	0	[2]	0	[2]	0	[2]
Advances [Member] | Fair Value Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative	(16)		(26)		(8)		17
Gain (Loss) on Hedged Item	19		29		14		(10)
Total Gain (Loss) Ineffectiveness Recognized in Derivatives and Hedging Activities	3		3		6		7
Effect of Derivatives on Net Interest Income	(21)	[1]	(39)	[1]	(45)	[1]	(86)	[1]
Hedge Adjustments Amortized into Net Interest Income	(1)	[2]	(7)	[2]	(24)	[2]	(9)	[2]
MPF Loans Held For Portfolio [Member] | Fair Value Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative	2		(5)		1		(6)
Gain (Loss) on Hedged Item	(2)		2		0		(2)
Total Gain (Loss) Ineffectiveness Recognized in Derivatives and Hedging Activities	0		(3)		1		(8)
Effect of Derivatives on Net Interest Income	(1)	[1]	(2)	[1]	(2)	[1]	(5)	[1]
Hedge Adjustments Amortized into Net Interest Income	(13)	[2]	(11)	[2]	(27)	[2]	(25)	[2]
Consolidated Obligation Bonds [Member] | Fair Value Hedges [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivative	31		152		7		129
Gain (Loss) on Hedged Item	(37)		(153)		(14)		(127)
Total Gain (Loss) Ineffectiveness Recognized in Derivatives and Hedging Activities	(6)		(1)		(7)		2
Effect of Derivatives on Net Interest Income	42	[1]	86	[1]	80	[1]	160	[1]
Hedge Adjustments Amortized into Net Interest Income	$ (7)	[2]	$ (9)	[2]	$ (16)	[2]	$ (18)	[2]

[1] Represents the effect of net interest settlements attributable to existing derivative hedging instruments on net interest income. The effect of derivatives on net interest income is included in the interest income/expense line item of the respective hedged item type.

[2] Amortization of hedge adjustments is included in the interest income/expense line item of the respective hedged item type.

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Investment Securities (Unrealized Temporary Losses on AFS) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	$ 4,309		$ 4,427
Less than 12 Months, Gross Unrealized Losses	(112)		(96)
12 Months or More, Fair Value	1,203		1,346
12 Months or More, Gross Unrealized Losses	(62)		(59)
Total Fair Value	5,512		5,773
Total Gross Unrealized Losses	(174)		(155)
Gross unrealized/unrecognized recoveries in fair value	33		28
U.S. Government & Other Government Related [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	82		98
Less than 12 Months, Gross Unrealized Losses	(2)		(2)
12 Months or More, Fair Value	0		0
12 Months or More, Gross Unrealized Losses	0		0
Total Fair Value	82		98
Total Gross Unrealized Losses	(2)		(2)
FFELP ABS [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	112		223
Less than 12 Months, Gross Unrealized Losses	(1)		(3)
12 Months or More, Fair Value	1,141		1,203
12 Months or More, Gross Unrealized Losses	(40)		(32)
Total Fair Value	1,253		1,426
Total Gross Unrealized Losses	(41)		(35)
GSE residential MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	4,115		4,073
Less than 12 Months, Gross Unrealized Losses	(109)		(91)
12 Months or More, Fair Value	0		0
12 Months or More, Gross Unrealized Losses	0		0
Total Fair Value	4,115		4,073
Total Gross Unrealized Losses	(109)		(91)
Government-guaranteed residential MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value			33
Less than 12 Months, Gross Unrealized Losses			0
12 Months or More, Fair Value			80
12 Months or More, Gross Unrealized Losses			0
Total Fair Value			113
Total Gross Unrealized Losses			0
Private-label residential MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	0		0
Less than 12 Months, Gross Unrealized Losses	0		0
12 Months or More, Fair Value	62		63
12 Months or More, Gross Unrealized Losses	(22)	[1]	(27)	[1]
Total Fair Value	62		63
Total Gross Unrealized Losses	(22)	[1]	(27)	[1]
MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months, Fair Value	4,115		4,106
Less than 12 Months, Gross Unrealized Losses	(109)		(91)
12 Months or More, Fair Value	62		143
12 Months or More, Gross Unrealized Losses	(22)		(27)
Total Fair Value	4,177		4,249
Total Gross Unrealized Losses	$ (131)		$ (118)

[1] Includes $33 million and $28 million of gross unrealized/unrecognized recoveries in fair value at June 30, 2012, and at December 31, 2011.

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MPF Loans (Tables)

6 Months Ended

Jun. 30, 2012

Mortgage Loans on Real Estate [Abstract]

Mortgage Loans Held for Portfolio [Table Text Block]

The following table presents information on MPF Loans held in our portfolio by contractual maturity at time of purchase. All are fixed-rate. Government is comprised of loans insured by the Federal Housing Administration (FHA) or the Department of Housing and Urban Development (HUD) and loans guaranteed by the Department of Veteran Affairs (VA) or Department of Agriculture Rural Housing Service (RHS). MPF Loans outstanding continue to decrease as a result of our ongoing strategy to not add MPF Loans to our balance sheet, except for loans being acquired under our affordable housing programs.

As of	June 30, 2012			December 31, 2011
Medium term (15 years or less)	$	3,126		$	3,810
Long term (greater than 15 years)	8,920			10,155
Total unpaid principal balance	12,046			13,965
Net premiums, credit enhancement and deferred loan fees	45			53
MPF hedging adjustments	119			145
Total before allowance for credit losses	12,210			14,163
Allowance for credit losses	(48		)	(45		)
Total MPF Loans held in portfolio, net	$	12,162		$	14,118
Conventional	$	9,715		$	11,433
Government	2,331			2,532
Total unpaid principal balance	$	12,046		$	13,965

See Note 8 - Allowance for Credit Lossesfor information related to our credit risk on MPF Loans and allowance for credit losses methodology.

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Advances (Tables)

6 Months Ended

Jun. 30, 2012

Advances [Abstract]

Schedule of Advances by Callable and Putable Features [Table Text Block]

The following table presents our advances by callable/putable features:

As of	June 30, 2012		December 31, 2011
Noncallable/nonputable	$	12,325	$	11,456
Callable	779		806
Putable	2,486		2,828
Total par value	15,590		15,090
Advance hedging adjustments	178		189
Other adjustments	29		12
Total advances	$	15,797	$	15,291

Advances by Year of Contractual Maturity, Next Call Date, or Next Put or Convert Date [Table Text Block]

The following table presents our advances by redemption terms:

As of June 30, 2012	Amount		Weighted Average Interest Rate			Next Maturity or Call Date		Next Maturity or Put Date
Due in one year or less	$	6,149	0.85	%		$	6,924	$	8,441
One to two years	991		2.45	%		891		980
Two to three years	1,179		2.10	%		1,179		1,172
Three to four years	1,278		2.59	%		928		699
Four to five years	1,594		3.54	%		1,394		1,031
More than five years	4,399		1.60	%	a	4,274		3,267
Total par value	$	15,590	1.68	%		$	15,590	$	15,590

^a  Weighted average interest rate is due to the inclusion of a significant variable-rate advance.

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Allowance for Credit Losses (Credit Quality Indicators - MPF Loans) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Recorded Investment, Past Due [Line Items]
Past due 30-59 days	$ 326		$ 383
Past due 60-89 days	105		129
Past due 90 days or more	521		551
Total past due	952		1,063
Total current	11,319		13,172
Total recorded investment	12,271		14,235
In process of foreclosure	277	[1]	256	[1]
Serious delinquency rate	4.27%	[2]	3.89%	[2]
Past due 90 days or more still accruing interest	357	[3]	376	[3]
On nonaccrual status	201		211
Conventional [Member]
Recorded Investment, Past Due [Line Items]
Past due 30-59 days	191		222
Past due 60-89 days	60		74
Past due 90 days or more	278		303
Total past due	529		599
Total current	9,384		11,075
Total recorded investment	9,913		11,674
In process of foreclosure	177	[1]	193	[1]
Serious delinquency rate	2.83%	[2]	2.62%	[2]
Past due 90 days or more still accruing interest	114	[3]	128	[3]
On nonaccrual status	201		211
Government [Member]
Recorded Investment, Past Due [Line Items]
Past due 30-59 days	135		161
Past due 60-89 days	45		55
Past due 90 days or more	243		248
Total past due	423		464
Total current	1,935		2,097
Total recorded investment	2,358		2,561
In process of foreclosure	100	[1]	63	[1]
Serious delinquency rate	10.30%	[2]	9.69%	[2]
Past due 90 days or more still accruing interest	243	[3]	248	[3]
On nonaccrual status	$ 0		$ 0

[1] Includes MPF Loans for which our master servicer has reported that the foreclosure process has been initiated or that our PFI servicer is seeking the deed to the underlying collateral in lieu of foreclosure. It should be noted that although a MPF Loan is in the process of foreclosure, it does not necessarily mean that foreclosure is probable.

[2] MPF Loans that are 90 days or more past due or in the process of foreclosure as a percentage of the total recorded investment.

[3] Consists of MPF Loans that are either government mortgage loans or conventional mortgage loans that are well secured (by collateral that have a realizable value sufficient to discharge the debt or by the guarantee or insurance, such as PMI, of a financially responsible party) and in the process of collection.

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Investment Securities (Unrealized Temporary Losses on HTM) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	$ 17	$ 7
Less than 12 Months, Gross Unrealized Losses	0	0
12 Months or More, Fair Value	1,615	1,690
12 Months or More, Gross Unrealized Losses	(434)	(518)
Total Fair Value	1,632	1,697
Total Gross Unrealized Losses	(434)	(518)
U.S. Government & Other Government Related [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	17	7
Less than 12 Months, Gross Unrealized Losses	0	0
12 Months or More, Fair Value	0	0
12 Months or More, Gross Unrealized Losses	0	0
Total Fair Value	17	7
Total Gross Unrealized Losses	0	0
GSE residential MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Gross Unrealized Losses	0	0
12 Months or More, Fair Value	37	37
12 Months or More, Gross Unrealized Losses	0	0
Total Fair Value	37	37
Total Gross Unrealized Losses	0	0
Private-label residential MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Gross Unrealized Losses	0	0
12 Months or More, Fair Value	1,578	1,653
12 Months or More, Gross Unrealized Losses	(434)	(518)
Total Fair Value	1,578	1,653
Total Gross Unrealized Losses	(434)	(518)
MBS [Member]
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Fair Value	0	0
Less than 12 Months, Gross Unrealized Losses	0	0
12 Months or More, Fair Value	1,615	1,690
12 Months or More, Gross Unrealized Losses	(434)	(518)
Total Fair Value	1,615	1,690
Total Gross Unrealized Losses	$ (434)	$ (518)

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Allowance for Credit Losses (Tables)

6 Months Ended

Jun. 30, 2012

Allowance for Credit Losses [Abstract]

Impact of MPF Risk Sharing Structure on Allowance for Credit Losses [Table Text Block]

As of	June 30, 2012			December 31, 2011
Total estimated losses outstanding	$	96		$	97
Less: losses expected to be absorbed by MPF Risk Sharing Structure	(23		)	(23		)
Our share of total losses	73			74
Less: non-credit losses a	(31		)	(34		)
Credit losses	42			40
Plus: other estimated credit losses in the remaining portfolio	6			5
Allowance for credit losses on conventional MPF Loans	$	48		$	45

^a  Non-credit losses represent period costs on Real Estate Owned (REO), for example, real estate taxes and maintenance costs and the economic loss of interest income that was contractually due but which was not recognized in our financial statements as the impaired MPF Loans were placed on nonaccrual status.

Rollforward of Allowance for Credit Losses on Mortgage Loans [Table Text Block]

The following table presents the changes in the allowance for credit losses on conventional MPF Loans and the recorded investment by impairment methodology.

	June 30, 2012			June 30, 2011
For the three months ended
Allowance for credit losses on conventional MPF Loans-
Balance, beginning of period	$	49		$	38
Losses charged to the allowance	(3		)	(2		)
Provision for credit losses	2			3
Balance, end of period	$	48		$	39
For the six months ended
Allowance for credit losses on conventional MPF Loans-
Balance, beginning of period	$	45		$	33
Losses charged to the allowance	(5		)	(3		)
Provision for credit losses	8			9
Balance, end of period	$	48		$	39
As of	June 30, 2012			December 31, 2011
Allowance assigned to conventional MPF Loans-
Specifically identified and individually evaluated for impairment	$	30		$	26
Homogeneous pools of loans and collectively evaluated for impairment	18			19
Total	$	48		$	45
Recorded Investment in Conventional MPF Loans-
Individually evaluated for impairment - with an allowance	$	197		$	204
Collectively evaluated for impairment	9,716			11,470
Total	$	9,913		$	11,674

Recorded Investment in Delinquent Mortgage Loans [Table Text Block]

The table below summarizes our recorded investment in MPF Loans by our key credit quality indicators.

	June 30, 2012									December 31, 2011
As of	Conventional			Government			Total			Conventional			Government			Total
Past due 30-59 days	$	191		$	135		$	326		$	222		$	161		$	383
Past due 60-89 days	60			45			105			74			55			129
Past due 90 days or more	278			243			521			303			248			551
Total past due	529			423			952			599			464			1,063
Total current	9,384			1,935			11,319			11,075			2,097			13,172
Total recorded investment	$	9,913		$	2,358		$	12,271		$	11,674		$	2,561		$	14,235
In process of foreclosure a	$	177		$	100		$	277		$	193		$	63		$	256
Serious delinquency rate b	2.83		%	10.30		%	4.27		%	2.62		%	9.69		%	3.89		%
Past due 90 days or more still accruing interest c	$	114		$	243		$	357		$	128		$	248		$	376
On nonaccrual status	$	201		$	—		$	201		$	211		$	—		$	211

^a  Includes MPF Loans for which our master servicer has reported that the foreclosure process has been initiated or that our PFI servicer is seeking the deed to the underlying collateral in lieu of foreclosure.  It should be noted that although a MPF Loan is in the process of foreclosure, it does not necessarily mean that foreclosure is probable.

^b  MPF Loans that are 90 days or more past due or in the process of foreclosure as a percentage of the total recorded investment.

^c  Consists of MPF Loans that are either government mortgage loans or conventional mortgage loans that are well secured (by collateral that have a realizable value sufficient to discharge the debt or by the guarantee or insurance, such as PMI, of a financially responsible party) and in the process of collection.

Performing and Non-performing Troubled Debt Restructurings [Table Text Block]

The following table shows our recorded investment balance in troubled debt restructured loans:

	June 30, 2012						December 31, 2011
As of	Performing a		Nonperforming b		Total		Performing a		Nonperforming b		Total
Conventional MPF Loans	$	11	$	4	$	15	$	6	$	3	$	9

^a  Includes modified loans that are accruing interest.

^b  Includes all other modified loans, including those that are on nonaccrual status, in foreclosure, or in bankruptcy.

Individually Evaluated Impaired Loan Statistics by Product Class Level [Table Text Block]

The following table summarizes the recorded investment, unpaid principal balance, and related allowance of impaired MPF Loans individually assessed for impairment, which includes impaired collateral dependent MPF Loans and troubled debt restructurings. We had no impaired MPF Loans without an allowance for either date.

	June 30, 2012						December 31, 2011
As of	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
Impaired conventional MPF Loans with an allowance	$	197	$	196	$	30	$	204	$	202	$	26

Average Recorded Investment of Individually Impaired Loans and Related Interest Income Recognized [Table Text Block]

The following table summarizes the average recorded investment of impaired MPF Loans and related interest recognized:

	June 30, 2012				June 30, 2011
For the periods ended	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Three months	$	199	$	2	$	135	$	2
Six months	201		5		127		3

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Derivatives and Hedging Activities (Tables)

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Fair Value of Derivative Instruments [Table Text Block]

The following table summarizes our derivatives, including cash collateral and related interest where we had the right to reclaim the collateral on derivative assets. The amounts where we had delivered excess collateral on derivative liabilities were insignificant for both periods presented.

	June 30, 2012								December 31, 2011
As of	Notional Amount		Derivative Assets			Derivative Liabilities			Notional Amount		Derivative Assets			Derivative Liabilities
Derivatives in hedge accounting relationships-
Interest rate swaps	$	25,218	$	136		$	2,163		$	28,240	$	203		$	2,099
Interest rate swaptions	—		—			—			370		32			—
Total	25,218		136			2,163			28,610		235			2,099
Derivatives not in hedge accounting relationships-
Interest rate swaps	31,298		903			784			38,159		927			785
Interest rate swaptions	7,290		173			—			4,820		179			—
Interest rate caps or floors	1,913		245			—			1,913		254			—
Mortgage delivery commitments	1,211		13			13			502		4			4
Total	41,712		1,334			797			45,394		1,364			789
Total before adjustments	$	66,930	1,470			2,960			$	74,004	1,599			2,888
Netting adjustments a			(1,393		)	(1,393		)			(1,461		)	(1,461		)
Exposure at fair value b			77			1,567					138			1,427
Cash collateral and related accrued interest			(25		)	(1,497		)			(98		)	(1,221		)
Derivative assets and liabilities			$	52		$	70				$	40		$	206

^a  Amounts represent the effect of legally enforceable master netting agreements that allow us to settle positive and negative positions.

^b  Includes net accrued interest receivable of $7 million as of June 30, 2012, and $13 million as of December 31, 2011.

Derivatives And Hedging Activities as Presented in the Statements of Income [Table Text Block]

The following tables present the components of derivatives and hedging activities as presented in the statements of income.

	Three months ended June 30,						Six months ended June 30,
For the periods ending	2012			2011			2012			2011
Fair value hedges -
Interest rate swaps	$	(7	)	$	(1	)	$	(3	)	$	6
Other	—			(2		)	1			(7		)
Fair value hedges - ineffectiveness net gain (loss)	(7		)	(3		)	(2		)	(1		)
Cash flow hedges - ineffectiveness net gain (loss)	—			12			2			14
Economic hedges -
Interest rate swaps	(44		)	(25		)	(46		)	(5		)
Interest rate swaptions	18			(12		)	18			(60		)
Interest rate caps/floors	4			14			(9		)	(10		)
Interest rate futures/TBA	—			—			—			—
Net interest settlements	21			10			40			44
Economic hedges - net gain (loss)	(1		)	(13		)	3			(31		)
Net gains (losses) on derivatives and hedging activities	$	(8	)	$	(4	)	$	3		$	(18	)

Fair Value Hedges [Table Text Block]

The following table presents, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships and the effect of those derivatives on our net interest income.

	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item			Total Gain (Loss) Ineffectiveness Recognized in Derivatives and Hedging Activities			Effect of Derivatives on Net Interest Income a			Hedge Adjustments Amortized into Net Interest Income b
Three months ended June 30, 2012
Hedged item type -
Available-for-sale securities	$	(113	)	$	109		$	(4	)	$	(33	)	$	—
Advances	(16		)	19			3			(21		)	(1		)
MPF Loans held for portfolio	2			(2		)	—			(1		)	(13		)
Consolidated obligation bonds	31			(37		)	(6		)	42			(7		)
Total	$	(96	)	$	89		$	(7	)	$	(13	)	$	(21	)
Three months ended June 30, 2011
Hedged item type -
Available-for-sale securities	$	(99	)	$	97		$	(2	)	$	(35	)	$	—
Advances	(26		)	29			3			(39		)	(7		)
MPF Loans held for portfolio	(5		)	2			(3		)	(2		)	(11		)
Consolidated obligation bonds	152			(153		)	(1		)	86			(9		)
Total	$	22		$	(25	)	$	(3	)	$	10		$	(27	)
Six months ended June 30, 2012
Hedged item type -
Available-for-sale investments	$	(77	)	$	75		$	(2	)	$	(65	)	$	—
Advances	(8		)	14			6			(45		)	(24		)
MPF Loans held for portfolio	1			—			1			(2		)	(27		)
Consolidated obligation bonds	7			(14		)	(7		)	80			(16		)
Total	$	(77	)	$	75		$	(2	)	$	(32	)	$	(67	)
Six months ended June 30, 2011
Hedged item type -
Available-for-sale investments	$	(84	)	$	82		$	(2	)	$	(67	)	$	—
Advances	17			(10		)	7			(86		)	(9		)
MPF Loans held for portfolio	(6		)	(2		)	(8		)	(5		)	(25		)
Consolidated obligation bonds	129			(127		)	2			160			(18		)
Total	$	56		$	(57	)	$	(1	)	$	2		$	(52	)

^a  Represents the effect of net interest settlements attributable to existing derivative hedging instruments on net interest income. The effect of derivatives on net interest income is included in the interest income/expense line item of the respective hedged item type.

^b  Amortization of hedge adjustments is included in the interest income/expense line item of the respective hedged item type.

Cash Flow Hedges [Table Text Block]

The following table presents our gains (losses) on our cash-flow hedging relationships. In the tables below, in cases where amounts are insignificant in the aggregate, we don't report a balance. See the Statements of Comprehensive Income on page 5 for more details on the effect of cash-flow hedges on AOCI.

	Effective Portion Recognized in AOCI Unrealized Gains (Losses)			Effective Portion Reclassified to Interest Income or Interest Expense Gain (Loss)			Ineffective Portion Recognized in Derivatives and Hedging Activities Gain (Loss)			Effect on Net Interest Income Gain (Loss) a
Three months ended June 30, 2012
Advances - interest rate floors	$	—		$	4		$	—	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(2		)	—			—
Consolidated obligation discount notes - interest rate swaps	(110		)	(1		)	—			(68		)
Consolidated obligation bonds - interest rate swaps	—			(1		)	—			—
Total	$	(110	)	$	—		$	—		$	(68	)
Three months ended June 30, 2011
Advances - interest rate floors	$	—		$	9		$	12	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(4		)	—			—
Consolidated obligation discount notes - interest rate swaps	(128		)	(1		)	—			(80		)
Consolidated obligation bonds - interest rate swaps	—			(1		)	—			—
Total	$	(128	)	$	3		$	12		$	(80	)
Six months ended June 30, 2012
Advances - interest rate floors	$	—		$	8		$	—	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(4		)	—			—
Consolidated obligation discount notes - interest rate swaps	(58		)	(2		)	2			(135		)
Consolidated obligation bonds - interest rate swaps	—			(3		)	—			—
Total	$	(58	)	$	(1	)	$	2		$	(135	)
Six months ended June 30, 2011
Advances - interest rate floors	$	—		$	22		$	12	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(8		)	—			—
Consolidated obligation discount notes - interest rate swaps	(53		)	(2		)	2			(161		)
Consolidated obligation bonds - interest rate swaps	—			(2		)	—			—
Total	$	(53	)	$	10		$	14		$	(161	)

^a  Represents the effect of net interest settlements attributable to open derivative hedging instruments on net interest income. The effect of     derivatives on net interest income is included in the interest income/expense line item of the respective hedged item type.

^b  Represents the recognition of previously deferred cash flow hedge adjustments related to advances in cash flow hedge relationships that were prepaid during the period.

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Background and Basis of Presentation

6 Months Ended

Jun. 30, 2012

Background [Abstract]

Background and Basis of Presentation [Text Block]

Background and Basis of Presentation

The Federal Home Loan Bank of Chicago ^a is a federally chartered corporation and one of 12 Federal Home Loan Banks (the FHLBs) that, with the Office of Finance, comprise the Federal Home Loan Bank System (the System).  The FHLBs are government-sponsored enterprises (GSE) of the United States of America and were organized under the Federal Home Loan Bank Act of 1932, as amended (FHLB Act), in order to improve the availability of funds to support home ownership.  We are supervised and regulated by the Federal Housing Finance Agency (FHFA), an independent federal agency in the executive branch of the United States government. We provide credit to members principally in the form of secured loans called advances. We also provide liquidity for home mortgage loans to members approved as Participating Financial Institutions (PFIs) through the Mortgage Partnership Finance^® (MPF^®) Program ^b.

Our accounting and financial reporting policies conform to generally accepted accounting principles in the United States of America (GAAP). The preparation of financial statements in conformity with GAAP requires the extensive use of management's estimates and assumptions that affect the reported amounts of assets and liabilities, as well as the disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of income and expenses. Actual results could differ from those estimates. Prior period amounts have been reclassified to conform to the current period presentation. We adopted the new FASB guidance on the presentation of comprehensive income that was issued in June of 2011 effective January 1, 2012. Specifically, we adopted on a retrospective basis and elected to present comprehensive income in two separate consecutive statements. The new guidance did not change the items that are currently reported in our other comprehensive income or when an item of other comprehensive income must be reclassified into net income. As a result, the effect of the new guidance on our financial statements was limited to how we present our financial statements. In the opinion of management, all normal recurring adjustments have been included for a fair statement of this interim financial information. These unaudited financial statements should be read in conjunction with the audited financial statements for the year ended December 31, 2011, included in our Annual Report on Form 10-K (2011 Form 10-K) filed with the SEC.

Our investments in variable interest entities (VIEs) include, but are not limited to, senior interests in private label mortgage-backed securities (MBS) and Federal Family Education Loan Program (FFELP) asset-backed securities (ABS). We have evaluated these VIEs for the periods presented, and determined that we are not required to apply consolidation accounting since we are not the primary beneficiary in any of these VIEs. Excluding contractually required amounts, we have not provided financial or other support (explicitly or implicitly) during the periods presented in our financial statements. Further, we do not intend to provide such support in the future. The carrying amounts and classification of the assets that relate to these VIEs are shown in investment securities in our statements of condition. We have no liabilities related to these VIEs. Our maximum loss exposure for our VIEs is limited to the carrying value.

For purposes of the statements of cash flows, we consider only cash and due from banks as cash and cash equivalents.

^a  Unless otherwise specified, references to we, us, our, and the Bank are to the Federal Home Loan Bank of Chicago.

^b  “Mortgage Partnership Finance”, “MPF”, and “MPF Xtra” are registered trademarks of the Federal Home Loan Bank of Chicago.

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Consolidated Obligations (Tables)

6 Months Ended

Jun. 30, 2012

Debt Disclosure [Abstract]

Consolidated Obligation Bonds [Table Text Block]

The following table presents our consolidated obligation bonds, for which we are the primary obligor, including callable bonds that are redeemable in whole, or in part, at our discretion on predetermined call dates.

As of June 30, 2012	Contractual Maturity		Weighted Average Interest Rate		Next Maturity or Call Date
Due in one year or less	$	9,132	2.64	%	$	24,403
One to two years	10,579		2.27	%	6,824
Two to three years	3,255		2.57	%	1,778
Three to four years	3,906		3.70	%	2,786
Four to five years	4,015		2.17	%	1,250
Thereafter	9,047		2.86	%	2,893
Total par value	$	39,934	2.64	%	$	39,934

Consolidated Obligation Discount Notes [Table Text Block]

The following table presents our consolidated obligation discount notes for which we are the primary obligor. All are due in one year or less.

	Carrying Value		Par Value		Weighted Average Interest Rate
As of June 30, 2012	$	23,439	$	23,443	0.05	%
As of December 31, 2011	25,404		25,411		0.05	%

Consolidated Obligation Bonds Outstanding by Call Feature [Table Text Block]

The following table presents consolidated obligation bonds outstanding by call feature:

As of	June 30, 2012			December 31, 2011
Noncallable	$	22,077		$	24,479
Callable	17,857			15,485
Total par value	39,934			39,964
Bond premiums (discounts), net	16			19
Hedging adjustments	(74		)	(104		)
Fair value option adjustments	(4		)	1
Total consolidated obligation bonds	$	39,872		$	39,880

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Investment Securities (Trading Securities) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
Trading Securities [Line Items]
Trading securities	$ 2,046		$ 2,935
Net year-to-date unrealized gains (losses) on trading securitie	(25)	(21)
U.S. Government & Other Government Related [Member]
Trading Securities [Line Items]
Trading securities	1,888		2,737
GSE residential MBS [Member]
Trading Securities [Line Items]
Trading securities	155		195
Government-guaranteed residential MBS [Member]
Trading Securities [Line Items]
Trading securities	3		3
MBS [Member]
Trading Securities [Line Items]
Trading securities	$ 158		$ 198

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MPF Loans (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Mar. 31, 2012	Dec. 31, 2011	Jun. 30, 2011	Mar. 31, 2011	Dec. 31, 2010
Mortgage Loans on Real Estate [Line Items]
Total unpaid principal balance	$ 12,046		$ 13,965
Net premiums, credit enhancement and deferred loan fees	45		53
MPF hedging adjustments	119		145
Total before allowance for credit losses	12,210		14,163
Allowance for credit losses	(48)		(45)
Total MPF Loans held in portfolio, net	12,162		14,118
Medium term (15 years or less) [Member]
Mortgage Loans on Real Estate [Line Items]
Total unpaid principal balance	3,126		3,810
Long term (greater than 15 years) [Member]
Mortgage Loans on Real Estate [Line Items]
Total unpaid principal balance	8,920		10,155
Conventional [Member]
Mortgage Loans on Real Estate [Line Items]
Total unpaid principal balance	9,715		11,433
Allowance for credit losses	(48)	(49)	(45)	(39)	(38)	(33)
Government [Member]
Mortgage Loans on Real Estate [Line Items]
Total unpaid principal balance	$ 2,331		$ 2,532

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Fair Value Accounting (Level 3 Reconciliation) (Details) (Fair Value, Measurements, Recurring [Member], Level 3 [Member], USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
Consolidated Obligation Bonds [Member]
Level 3 Liabilities [Roll Forward]
Beginning Balance	$ (87)	$ (78)
Change in fair value included in earnings in derivatives and hedging activities	2	0
Included in net change in fair value on OTTI AFS securities in OCI	0	0
Paydowns and settlements	0	0
Ending Balance	(85)	(78)
Total unrealized gains (losses) included in earnings attributable to instruments still held at period end	2	0
Derivative Assets, Interest Rate Related [Member]
Level 3 Assets [Roll Forward]
Beginning Balance	37	29
Change in fair value included in earnings in derivatives and hedging activities	(1)	0
Included in net change in fair value on OTTI AFS securities in OCI	0	0
Paydowns and settlements	0	0
Ending Balance	36	29
Level 3 Liabilities [Roll Forward]
Total unrealized gains (losses) included in earnings attributable to instruments still held at period end	(1)	0
Private-label residential MBS [Member]
Level 3 Assets [Roll Forward]
Beginning Balance	63	76
Change in fair value included in earnings in derivatives and hedging activities	1	0
Included in net change in fair value on OTTI AFS securities in OCI	5	5
Paydowns and settlements	(7)	(8)
Ending Balance	62	73
Level 3 Liabilities [Roll Forward]
Total unrealized gains (losses) included in earnings attributable to instruments still held at period end	$ 1	$ 0

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Statements of Condition (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Assets
Cash and due from banks	$ 24		$ 1,002
Federal Funds sold	1,697		950
Securities purchased under agreements to resell	2,100		825
Investment securities -
Trading, $0 and $15 pledged	2,046		2,935
Available-for-sale, $0 and $14 pledged	23,896		24,316
Held-to-maturity, $0 and $490 pledged	10,597	[1]	11,477	[1]
Total investment securities	36,539		38,728
Advances, $9 and $9 carried at fair value	15,797		15,291
MPF Loans held in portfolio, net of allowance for credit losses of $(48) and $(45)	12,162		14,118
Accrued interest receivable	135		153
Derivative assets	52		40
Software and equipment, net of accumulated amortization/depreciation of $(150) and $(143)	35		38
Other assets	100		110
Total assets	68,641		71,255
Deposits -
Interest bearing	632		535
Non-interest bearing	95		113
Total deposits	727		648
Securities sold under agreements to repurchase	0		400
Consolidated obligations, net
Discount Notes, $4,135 and $11,466 carried at fair value	23,439		25,404
Bonds, $7,017 and $2,631 carried at fair value	39,872		39,880
Total consolidated obligations, net	63,311		65,284
Accrued interest payable	171		203
Mandatorily redeemable capital stock	10	[2]	4
Derivative liabilities	70		206
Affordable Housing Program assessment payable	71		61
Other liabilities	148		157
Subordinated notes	1,000		1,000
Total liabilities	65,508		67,963
Commitments and contingencies - Note 16
Capital
Class B-1 Capital stock - putable $100 par value - 1 million shares issued and outstanding at June 30, 2012	92
Class B-2 Capital stock, - putable $100 par value - 18 million shares issued and outstanding at June 30, 2012	1,758
Total Capital stock - putable $100 par value -19 million shares issued and outstanding at June 30, 2012, and 24 million shares issued and outstanding at December 31, 2011	1,850		2,402
Retained Earnings, unrestricted	1,435		1,289
Retained Earnings, restricted	69		32
Total retained earnings	1,504		1,321
Accumulated other comprehensive income (loss)	(221)		(431)
Total capital	3,133		3,292
Total liabilities and capital	$ 68,641		$ 71,255

[1] Fair value of held-to-maturity securities: $11,336 and $12,131.

[2] All MRCS outstanding at the end of the period are redeemable in five years.

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Investment Securities (Maturity Terms) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012
AFS Securities, excluding ABS and MBS [Member]
Schedule of Securities by Contractual Maturity [Line Items]
Available-For-Sale, Due in One Year or Less, Amortized Cost	$ 0
Available-For-Sale, Due in One Year or Less, Fair Value	0
Available-For-Sale, Due after One Year Through Five Years, Amortized Cost	0
Available-For-Sale, Due after One Year Through Five Years, Fair Value	0
Available-For-Sale, Due after Five Years Through Ten Years, Amortized Cost	253
Available-For-Sale, Due after Five Years Through Ten Years, Fair Value	272
Available-For-Sale, Due after Ten Years, Amortized Cost	507
Available-For-Sale, Due after Ten Years, Fair Value	548
Available-For-Sale, Total Amortized Cost	760
Available-For-Sale, Total Fair Value	820
HTM Securities, excluding ABS and MBS [Member]
Schedule of Securities by Contractual Maturity [Line Items]
Held-To-Maturity, Due in One Year or Less, Amortized Cost	805
Held-To-Maturity, Due in One Year or Less, Fair Value	812
Held-To-Maturity, Due after One Year Through Five Years Amortized Cost	65
Held-To-Maturity, Due after One Year Through Five Years, Fair Value	66
Held-To-Maturity, Due after Five Years Through Ten Years, Amortized Cost	515
Held-To-Maturity, Due after Five Years Through Ten Years, Fair Value	532
Held-To-Maturity, Due after Ten Years, Amortized Cost	1,235
Held-To-Maturity, Due after Ten Years, Fair Value	1,336
Held-To-Maturity, Total Amortized Cost	2,620
Held-To-Maturity, Total Fair Value	$ 2,746

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Statements of Capital (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance					$ 3,292		$ 2,949
Comprehensive income	235		180		395		254
Proceeds from issuance of capital stock, par value					125		22
Repurchases of capital stock, par value					(645)
Capital stock reclassified to mandatorily redeemable capital stock					(32)		(3)
Cash dividends on capital stock					(2)		(1)
Balance	3,133		3,221		3,133		3,221
Common Stock Putable [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares					24	[1],[2]	23	[1]
Balance					2,402	[2]	2,333
Proceeds from issuance of capital stock, shares					1	[1]	1	[1]
Proceeds from issuance of capital stock, par value					125		22
Repurchases of capital stock, shares					(6)	[1]
Repurchases of capital stock, par value					(645)
Capital stock reclassified to mandatorily redeemable capital stock, shares					0	[1]	0	[1]
Capital stock reclassified to mandatorily redeemable capital stock					(32)		(3)
Shares	19	[1]	24	[1]	19	[1]	24	[1]
Balance	1,850		2,352		1,850		2,352
Retained Earnings, Unrestricted [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance					1,289		1,099
Comprehensive income					148		67
Cash dividends on capital stock					(2)		(1)
Balance	1,435		1,165		1,435		1,165
Retained Earnings, Restricted [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance					32		0
Comprehensive income					37		0
Cash dividends on capital stock					0		0
Balance	69		0		69		0
Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance					1,321		1,099
Comprehensive income					185		67
Cash dividends on capital stock					(2)		(1)
Balance	1,504		1,165		1,504		1,165
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance					(431)		(483)
Comprehensive income					210		187
Balance	$ (221)		$ (296)		$ (221)		$ (296)

[1] Excludes outstanding shares reclassified to mandatorily redeemable capital stock. See Note 13 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS).

[2] On January 1, 2012 Capital Stock, shares and par value, were converted to B-1 and B-2 shares under our new Capital Plan. See Note 13 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS).

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Derivatives and Hedging Activities (Narrative) (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012
Derivative [Line Items]
Maximum amount of additional collateral at fair value to our derivatives counterparties if our credit rating had been lowered to the next lower rating	$ 54
Maximum Hedging Period For Forecasted Cash Flows For Transactions, Excluding Payment of Variable Interest on Existing Financial Instruments	8 years
Forecast, Next 12 Months [Member]
Derivative [Line Items]
Deferred net gains on derivative instruments in AOCI that are expected to be reclassified to earnings during the next twelve month	$ 9

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Fair Value Accounting (Tables)

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Significant Inputs of MBS and Non-MBS Investment Securities [Table Text Block]

The significant unobservable inputs used by third party pricing services in the fair value measurement of our private-label residential MBS are prepayment rates, probability of default, and loss severity in the event of default. Significant increases (decreases) in any of those inputs in isolation may result in a significantly lower (higher) fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity and a directionally opposite change in the assumption used for prepayment rates. The table below provides the investment securities in which fair value is provided to us by third party pricing services.

				Range of Pricing Services Values
As of June 30, 2012	Portfolios	Fair Value		Minimum		Maximum
Private-label residential MBS - OTTI	AFS	$	62	$	56	$	68
Private-label residential MBS - OTTI	HTM	2		2		2

Valuation Techniques and Significant Inputs [Table Text Block]

Derivative Assets

The following table shows the range of values for our derivative assets that are carried at fair value under a fair value hedge strategy on our statements of condition using Level 3 significant inputs.

As of June 30, 2012	Fair Value		Minimum		Maximum
Derivative Assets	$	36	$	36	$	36

Consolidated obligations

The following table shows the applicable curve of our consolidated obligations that are carried at fair value under a fair value hedge strategy on our statements of condition using Level 3 significant inputs.

As of June 30, 2012	Significant Inputs Curve	Fair Value
Non-callable consolidated obligation bonds	CO	$	85

Impaired MPF Loans and Real Estate Owned

The following table shows the fair values of our impaired MPF Loans and Real Estate Owned which are valued using Level 3 inputs on a nonrecurring basis at the time of impairment using broker price opinions. If a current broker price opinion is not available, we estimate fair value using internal discounted cash flow models based on current actual loss severity rates we have incurred on sales, excluding any estimated selling costs. See Note 8 - Allowance for Credit Losses for further details. Significant increases (decreases) in the loss severity rate input in isolation may result in a significantly lower (higher) fair value measurement.

As of June 30, 2012	Fair Value
Impaired MPF Loans	$	184
Real estate owned written down to fair value during the quarter	14

Fair Value Measurement [Table Text Block]

The following tables are a summary of fair value estimates and for the current period table the related level in the fair value hierarchy for financial instruments. It excludes non-financial items, for example, real estate owned. The carrying amounts in the following tables are recorded in the statements of condition under the indicated captions. These tables do not represent an estimate of the overall market value of us as a going concern; as they do not take into account future business opportunities and future net profitability of assets and liabilities. 

June 30, 2012
			Fair Value
	Carrying  Value		Total		Level 1		Level 2			Level 3			Netting Adjustment/ Cash Collateral a
Financial Assets
Cash and due from banks	$	24	$	24	$	24	$	—		$	—		$	—
Federal Funds sold	1,697		1,697		—		1,697			—			—
Securities purchased under agreements to resell	2,100		2,100		—		2,100			—			—
Trading securities	2,046		2,046		—		2,046			—			—
Available-for-sale securities	23,896		23,896		—		23,834			62			—
Held-to-maturity securities	10,597		11,336		—		9,605			1,731			—
Advances	15,797		16,093		—		16,093			—			—
MPF Loans held in portfolio, net	12,162		13,110		—		12,926			184			—
Accrued interest receivable	135		135		—		135			—			—
Derivative assets	52		52		—		1,434		b	36		b	(1,418		)
Financial Liabilities
Deposits	$	727	$	727	$	—	$	727		$	—		$	—
Securities sold under agreements to repurchase	—		—		—		—			—			—
Consolidated obligations -
Discount notes	23,439		23,439		—		23,439			—			—
Bonds	39,872		41,872		—		41,787			85		c	—
Accrued interest payable	171		171		—		171			—			—
Mandatorily redeemable capital stock	10		10		10		—			—			—
Derivative liabilities	70		70		—		2,960			—			(2,890		)
Subordinated notes	1,000		1,138		—		1,138		b	—			—

^a  Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

^b  Our derivative assets are, in part, secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

^c  Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

	December 31, 2011
	Carrying Value		Fair Value
Financial Assets
Cash and due from banks	$	1,002	$	1,002
Federal Funds sold	950		950
Securities purchased under agreements to resell	825		825
Trading securities	2,935		2,935
Available-for-sale securities	24,316		24,316
Held-to-maturity securities	11,477		12,131
Advances	15,291		15,663
MPF Loans held in portfolio, net	14,118		15,177
Accrued interest receivable	153		153
Derivative assets	40		40
Financial Liabilities
Deposits	$	648	$	648
Securities sold under agreements to repurchase	400		400
Consolidated obligations -
Discount notes	25,404		25,404
Bonds	39,880		42,163
Accrued interest payable	203		203
Mandatorily redeemable capital stock	4		4
Derivative liabilities	206		206
Subordinated notes	1,000		1,127

Assets and Liabilities Measured at Fair Value on a Recurring Basis [Table Text Block]

The following table presents, for each hierarchy level, our assets and liabilities that are measured at fair value on the statements of condition:

As of June 30, 2012	Level 1		Level 2				Level 3				Netting Adjustment a			Total
Assets -
Trading securities:
U.S. Government & other government related	$	—	$	1,888			$	—			$	—		$	1,888
GSE residential MBS	—		155				—				—			155
Governmental-guaranteed residential MBS	—		3				—				—			3
Total Trading Securities	—		2,046				—				—			2,046
AFS securities:
U.S. Government & other government related	—		820				—				—			820
FFELP ABS	—		7,870				—				—			7,870
GSE residential MBS	—		12,175				—				—			12,175
Government-guaranteed residential MBS	—		2,969				—				—			2,969
Private-label residential MBS	—		—				62				—			62
Total AFS Securities	—		23,834				62				—			23,896
Advances	—		9				—				—			9
Derivative assets	—		1,434			b	36			b	(1,418		)	52
Total assets at fair value	$	—	$	27,323			$	98			$	(1,418	)	$	26,003
Level 3 as a percent of total assets at fair value							0.4		%
Liabilities -
Consolidated obligation discount notes	$	—	$	(4,135	)		$	—			$	—		$	(4,135	)
Consolidated obligation bonds	—		(7,017		)		(85		)	c	—			(7,102		)
Derivative liabilities	—		(2,960		)	b	—				2,890			(70		)
Total liabilities at fair value	$	—	$	(14,112	)		$	(85	)		$	2,890		$	(11,307	)
Level 3 as a percent of total liabilities at fair value							0.8		%

^a  Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

^b  Our derivative assets are, in part secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

^c  Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

As of December 31, 2011	Level 1		Level 2				Level 3				Netting Adjustment a			Total
Assets -
Trading securities:
U.S. Government & other government related	$	—	$	2,737			$	—			$	—		$	2,737
GSE residential MBS	—		195				—				—			195
Governmental-guaranteed residential MBS	—		3				—				—			3
Total Trading Securities	—		2,935				—				—			2,935
AFS securities:
U.S. Government & other government related	—		1,001				—				—			1,001
FFELP ABS	—		8,159				—				—			8,159
GSE residential MBS	—		12,132				—				—			12,132
Government-guaranteed residential MBS	—		2,961				—				—			2,961
Private-label residential MBS	—		—				63				—			63
Total AFS Securities	—		24,253				63				—			24,316
Advances	—		9				—				—			9
Derivative assets	—		1,562			b	37			b	(1,559		)	40
Total assets at fair value	$	—	$	28,759			$	100			$	(1,559	)	$	27,300
Level 3 as a percent of total assets at fair value							0.4		%
Liabilities -
Consolidated obligation discount notes	$	—	$	(11,466	)		$	—			$	—		$	(11,466	)
Consolidated obligation bonds	—		(2,631		)		(87		)	c	—			(2,718		)
Derivative liabilities	—		(2,888		)	b	—				2,682			(206		)
Total liabilities at fair value	$	—	$	(16,985	)		$	(87	)		$	2,682		$	(14,390	)
Level 3 as a percent of total liabilities at fair value							0.6		%

^a  Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

^b  Our derivative assets are, in part, secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

^c  Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

Level 3 Disclosures for all Assets and Liabilities that are Measured at Fair Value on a Recurring Basis [Table Text Block]

The following table presents a reconciliation of all assets and liabilities that are measured at fair value on the statements of condition using significant unobservable inputs (Level 3):

	Level 3 Assets/Liabilities
	Available-For-Sale Private-Label MBS			Derivative Assets Interest-Rate Related			Consolidated Obligation Bonds
At December 31, 2011	$	63		$	37		$	(87	)
Gains (losses) realized and unrealized:
Change in fair value included in earnings in derivatives and hedging activities	1			(1		)	2
Included in net change in fair value on OTTI AFS securities in OCI	5			—			—
Paydowns and settlements	(7		)	—			—
At June 30, 2012	$	62		$	36		$	(85	)
Total unrealized gains (losses) included in earnings attributable to instruments still held at period end	$	1		$	(1	)	$	2
At December 31, 2010	$	76		$	29		$	(78	)
Gains (losses) realized and unrealized:
Change in fair value included in earnings in derivatives and hedging activities	—			—			—
Included in net change in fair value on OTTI AFS securities in OCI	5			—			—
Paydowns and settlements	(8		)	—			—
At June 30, 2011	$	73		$	29		$	(78	)
Total unrealized gains (losses) included in earnings attributable to instruments still held at period end	$	—		$	—		$	—

Assets Measured at Fair Value on a Nonrecurring Basis [Table Text Block]

	June 30, 2012						December 31, 2011
	Level 1		Level  2		Level  3		Level 1		Level  2		Level  3
Held-to-maturity - Private-label residential MBS	$	—	$	—	$	2	$	—	$	—	$	9
Impaired MPF Loans	—		—		184		—		—		193
Real estate owned	—		—		14		—		—		16
Total non-recurring assets	$	—	$	—	$	200	$	—	$	—	$	218

Fair Value Option [Table Text Block]

The following tables summarize the activity related to financial assets and liabilities for which we elected the fair value option: 

	June 30, 2012								June 30, 2011
			Consolidated Obligation								Consolidated Obligation
	Advances		Bonds			Discount Notes			Advances		Bonds			Discount Notes
For the three months ended
Balance beginning of period	$	9	$	(3,132	)	$	(9,268	)	$	6	$	(5,479	)	$	(2,501	)
New transactions elected for fair value option	—		(6,565		)	—			3		(3,300		)	(150		)
Maturities and extinguishments	—		2,680			5,136			—		4,705			1,450
Net gain (loss) on instruments held at fair value	—		2			—			—		(8		)	—
Change in accrued interest and other	—		(2		)	(3		)	—		9			(1		)
Balance end of period	$	9	$	(7,017	)	$	(4,135	)	$	9	$	(4,073	)	$	(1,202	)
For the six months ended
Balance beginning of period	$	9	$	(2,631	)	$	(11,466	)	$	4	$	(9,425	)	$	(4,864	)
New transactions elected for fair value option	—		(8,890		)	—			5		(4,159		)	(150		)
Maturities and extinguishments	—		4,500			7,336			—		9,519			3,816
Net gain (loss) on instruments held at fair value	—		6			2			—		(13		)	—
Change in accrued interest and other	—		(2		)	(7		)	—		5			(4		)
Balance end of period	$	9	$	(7,017	)	$	(4,135	)	$	9	$	(4,073	)	$	(1,202	)

Fair Value Option, Quantitative Disclosure, Difference Between Aggregate Fair Value and Aggregate Remaining Contractual Principal Balance Outstanding [Table Text Block]

The following table reflects the difference between the aggregate unpaid principal balance (UPB) outstanding and the aggregate fair value for advances and consolidated obligation bonds for which the fair value option has been elected. None of the advances were 90 days or more past due or on nonaccrual status.

	June 30, 2012									December 31, 2011
As of	Unpaid Principal Balance			Fair Value			Fair Value Over (Under) UPB			Unpaid Principal Balance			Fair Value			Fair Value Over (Under) UPB
Advances	$	9		$	9		$	—		$	9		$	9		$	—
Consolidated obligation bonds	(7,020		)	(7,017		)	(3		)	(2,630		)	(2,631		)	1
Consolidated obligation discount notes	(4,135		)	(4,135		)	—			(11,465		)	(11,466		)	1

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Subordinated Notes (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Subordinated Debt [Abstract]
Annual Phase-outs of Designated Amount of Subordinated Notes Included in Regulatory Leverage Compliance, Percentage	20.00%
Designated Amount of Subordinated Notes Included in Regulatory Leverage Compliance		$ 800

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Fair Value Accounting

6 Months Ended

Jun. 30, 2012

Fair Value Disclosures [Abstract]

Fair Value Accounting [Text Block]

Fair Value Accounting

Fair Value Measurement

We record trading securities, AFS securities, derivative assets, and derivative liabilities at fair value. We also carry advances and consolidated obligations at fair value when we elect the fair value option for them. The fair value amounts recorded on the statements of condition and presented in the note disclosures have been determined by us using available market information and our judgment of appropriate valuation methods. These estimates are based on pertinent information available to us as of the dates presented. Estimates of the fair value of advances with options, mortgage instruments, derivatives with embedded options and consolidated obligation bonds with options using the methods described below, and other methods, 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 estimated fair value. Although we believe our estimated fair values are reasonable, there are inherent limitations in any valuation technique. 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. These estimates are susceptible to material near term changes because they are made as of a specific point in time.

Fair Value Hierarchy

The fair value hierarchy is used to prioritize the valuation techniques as well as the inputs used to measure fair value for assets and liabilities carried at fair value on the statements of condition. The fair value hierarchy requires us 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.

Outlined below is the application of the fair value hierarchy to our financial assets and financial liabilities that are carried at fair value or disclosed in the notes to the financial statements:

Level 1 inputs are quoted prices (unadjusted) in active markets for identical assets or liabilities that we can access at the measurement date.

Level 2inputs are inputs other than quoted prices included within Level 1 that are observable for the asset or liability, either directly or indirectly. If the asset or liability has a specified (contractual) term, a Level 2 input must be observable for substantially the full term of the asset or liability. Level 2 inputs include the following:

a. Quoted prices for similar assets or liabilities in active markets

b. Quoted prices for identical or similar assets, or liabilities, in markets that are not active

c. Inputs other than quoted prices, that are observable for the asset or liability, for example:

1. Interest rates and yield curves observable at commonly quoted intervals

2. Implied volatilities

3. Credit spreads

d. Market-corroborated inputs.

Level 3 inputs are unobservable inputs for the asset or liability. Unobservable inputs are used to measure fair value to the extent that relevant observable inputs are not available, thereby allowing for situations in which there is little, if any, market activity for the asset or liability at the measurement date. However, the fair value measurement objective remains the same, that is, an exit price at the measurement date from the perspective of a market participant that holds the asset or owes the liability. Therefore, unobservable inputs shall reflect the assumptions that market participants would use when pricing the asset or liability, including assumptions about risk.

For instruments carried at fair value, we review the fair value hierarchy classifications on a quarterly basis. Changes in the observability of the valuation attributes may result in a reclassification of financial assets or liabilities from one level to another. Such reclassifications are reported as transfers in/out at fair value as of the beginning of the quarter in which the changes occur. We had no such transfers for the periods presented.

Valuation Techniques and Significant Inputs

A description of the valuation techniques and significant inputs is disclosed in Note 20 - Fair Value Accounting in our 2011 Form 10-K. There have been no significant changes in our valuation techniques since then.

Unobservable Level 3 significant inputs of financial instruments that are carried at fair value in our statements of condition are disclosed below.

Private-Label Residential MBS

The significant unobservable inputs used by third party pricing services in the fair value measurement of our private-label residential MBS are prepayment rates, probability of default, and loss severity in the event of default. Significant increases (decreases) in any of those inputs in isolation may result in a significantly lower (higher) fair value measurement. Generally, a change in the assumption used for the probability of default is accompanied by a directionally similar change in the assumption used for the loss severity and a directionally opposite change in the assumption used for prepayment rates. The table below provides the investment securities in which fair value is provided to us by third party pricing services.

				Range of Pricing Services Values
As of June 30, 2012	Portfolios	Fair Value		Minimum		Maximum
Private-label residential MBS - OTTI	AFS	$	62	$	56	$	68
Private-label residential MBS - OTTI	HTM	2		2		2

Derivative Assets

The following table shows the range of values for our derivative assets that are carried at fair value under a fair value hedge strategy on our statements of condition using Level 3 significant inputs.

As of June 30, 2012	Fair Value		Minimum		Maximum
Derivative Assets	$	36	$	36	$	36

Consolidated obligations

The following table shows the applicable curve of our consolidated obligations that are carried at fair value under a fair value hedge strategy on our statements of condition using Level 3 significant inputs.

As of June 30, 2012	Significant Inputs Curve	Fair Value
Non-callable consolidated obligation bonds	CO	$	85

Impaired MPF Loans and Real Estate Owned

The following table shows the fair values of our impaired MPF Loans and Real Estate Owned which are valued using Level 3 inputs on a nonrecurring basis at the time of impairment using broker price opinions. If a current broker price opinion is not available, we estimate fair value using internal discounted cash flow models based on current actual loss severity rates we have incurred on sales, excluding any estimated selling costs. See Note 8 - Allowance for Credit Losses for further details. Significant increases (decreases) in the loss severity rate input in isolation may result in a significantly lower (higher) fair value measurement.

As of June 30, 2012	Fair Value
Impaired MPF Loans	$	184
Real estate owned written down to fair value during the quarter	14

Fair Value Estimates for Financial Instruments

The following tables are a summary of fair value estimates and for the current period table the related level in the fair value hierarchy for financial instruments. It excludes non-financial items, for example, real estate owned. The carrying amounts in the following tables are recorded in the statements of condition under the indicated captions. These tables do not represent an estimate of the overall market value of us as a going concern; as they do not take into account future business opportunities and future net profitability of assets and liabilities. 

June 30, 2012
			Fair Value
	Carrying  Value		Total		Level 1		Level 2			Level 3			Netting Adjustment/ Cash Collateral a
Financial Assets
Cash and due from banks	$	24	$	24	$	24	$	—		$	—		$	—
Federal Funds sold	1,697		1,697		—		1,697			—			—
Securities purchased under agreements to resell	2,100		2,100		—		2,100			—			—
Trading securities	2,046		2,046		—		2,046			—			—
Available-for-sale securities	23,896		23,896		—		23,834			62			—
Held-to-maturity securities	10,597		11,336		—		9,605			1,731			—
Advances	15,797		16,093		—		16,093			—			—
MPF Loans held in portfolio, net	12,162		13,110		—		12,926			184			—
Accrued interest receivable	135		135		—		135			—			—
Derivative assets	52		52		—		1,434		b	36		b	(1,418		)
Financial Liabilities
Deposits	$	727	$	727	$	—	$	727		$	—		$	—
Securities sold under agreements to repurchase	—		—		—		—			—			—
Consolidated obligations -
Discount notes	23,439		23,439		—		23,439			—			—
Bonds	39,872		41,872		—		41,787			85		c	—
Accrued interest payable	171		171		—		171			—			—
Mandatorily redeemable capital stock	10		10		10		—			—			—
Derivative liabilities	70		70		—		2,960			—			(2,890		)
Subordinated notes	1,000		1,138		—		1,138		b	—			—

^a  Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

^b  Our derivative assets are, in part, secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

^c  Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

	December 31, 2011
	Carrying Value		Fair Value
Financial Assets
Cash and due from banks	$	1,002	$	1,002
Federal Funds sold	950		950
Securities purchased under agreements to resell	825		825
Trading securities	2,935		2,935
Available-for-sale securities	24,316		24,316
Held-to-maturity securities	11,477		12,131
Advances	15,291		15,663
MPF Loans held in portfolio, net	14,118		15,177
Accrued interest receivable	153		153
Derivative assets	40		40
Financial Liabilities
Deposits	$	648	$	648
Securities sold under agreements to repurchase	400		400
Consolidated obligations -
Discount notes	25,404		25,404
Bonds	39,880		42,163
Accrued interest payable	203		203
Mandatorily redeemable capital stock	4		4
Derivative liabilities	206		206
Subordinated notes	1,000		1,127

Assets and Liabilities Measured at Fair Value on a Recurring Basis

The following table presents, for each hierarchy level, our assets and liabilities that are measured at fair value on the statements of condition:

As of June 30, 2012	Level 1		Level 2				Level 3				Netting Adjustment a			Total
Assets -
Trading securities:
U.S. Government & other government related	$	—	$	1,888			$	—			$	—		$	1,888
GSE residential MBS	—		155				—				—			155
Governmental-guaranteed residential MBS	—		3				—				—			3
Total Trading Securities	—		2,046				—				—			2,046
AFS securities:
U.S. Government & other government related	—		820				—				—			820
FFELP ABS	—		7,870				—				—			7,870
GSE residential MBS	—		12,175				—				—			12,175
Government-guaranteed residential MBS	—		2,969				—				—			2,969
Private-label residential MBS	—		—				62				—			62
Total AFS Securities	—		23,834				62				—			23,896
Advances	—		9				—				—			9
Derivative assets	—		1,434			b	36			b	(1,418		)	52
Total assets at fair value	$	—	$	27,323			$	98			$	(1,418	)	$	26,003
Level 3 as a percent of total assets at fair value							0.4		%
Liabilities -
Consolidated obligation discount notes	$	—	$	(4,135	)		$	—			$	—		$	(4,135	)
Consolidated obligation bonds	—		(7,017		)		(85		)	c	—			(7,102		)
Derivative liabilities	—		(2,960		)	b	—				2,890			(70		)
Total liabilities at fair value	$	—	$	(14,112	)		$	(85	)		$	2,890		$	(11,307	)
Level 3 as a percent of total liabilities at fair value							0.8		%

^a  Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

^b  Our derivative assets are, in part secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

^c  Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

As of December 31, 2011	Level 1		Level 2				Level 3				Netting Adjustment a			Total
Assets -
Trading securities:
U.S. Government & other government related	$	—	$	2,737			$	—			$	—		$	2,737
GSE residential MBS	—		195				—				—			195
Governmental-guaranteed residential MBS	—		3				—				—			3
Total Trading Securities	—		2,935				—				—			2,935
AFS securities:
U.S. Government & other government related	—		1,001				—				—			1,001
FFELP ABS	—		8,159				—				—			8,159
GSE residential MBS	—		12,132				—				—			12,132
Government-guaranteed residential MBS	—		2,961				—				—			2,961
Private-label residential MBS	—		—				63				—			63
Total AFS Securities	—		24,253				63				—			24,316
Advances	—		9				—				—			9
Derivative assets	—		1,562			b	37			b	(1,559		)	40
Total assets at fair value	$	—	$	28,759			$	100			$	(1,559	)	$	27,300
Level 3 as a percent of total assets at fair value							0.4		%
Liabilities -
Consolidated obligation discount notes	$	—	$	(11,466	)		$	—			$	—		$	(11,466	)
Consolidated obligation bonds	—		(2,631		)		(87		)	c	—			(2,718		)
Derivative liabilities	—		(2,888		)	b	—				2,682			(206		)
Total liabilities at fair value	$	—	$	(16,985	)		$	(87	)		$	2,682		$	(14,390	)
Level 3 as a percent of total liabilities at fair value							0.6		%

^a  Amounts represent the effect of legally enforceable master netting agreements and futures contracts margin accounts that allow us to settle positive and negative positions and also cash collateral held or placed with the same counterparties.

^b  Our derivative assets are, in part, secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

^c  Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

Level 3 Disclosures for all Assets and Liabilities that are Measured at Fair Value on a Recurring Basis

The following table presents a reconciliation of all assets and liabilities that are measured at fair value on the statements of condition using significant unobservable inputs (Level 3):

	Level 3 Assets/Liabilities
	Available-For-Sale Private-Label MBS			Derivative Assets Interest-Rate Related			Consolidated Obligation Bonds
At December 31, 2011	$	63		$	37		$	(87	)
Gains (losses) realized and unrealized:
Change in fair value included in earnings in derivatives and hedging activities	1			(1		)	2
Included in net change in fair value on OTTI AFS securities in OCI	5			—			—
Paydowns and settlements	(7		)	—			—
At June 30, 2012	$	62		$	36		$	(85	)
Total unrealized gains (losses) included in earnings attributable to instruments still held at period end	$	1		$	(1	)	$	2
At December 31, 2010	$	76		$	29		$	(78	)
Gains (losses) realized and unrealized:
Change in fair value included in earnings in derivatives and hedging activities	—			—			—
Included in net change in fair value on OTTI AFS securities in OCI	5			—			—
Paydowns and settlements	(8		)	—			—
At June 30, 2011	$	73		$	29		$	(78	)
Total unrealized gains (losses) included in earnings attributable to instruments still held at period end	$	—		$	—		$	—

Assets Measured at Fair Value on a Nonrecurring Basis

The table below presents assets that are measured at fair value on a nonrecurring basis as of the dates shown. These assets are subject to being measured at fair value as a result of becoming impaired during the reporting period or in the case of REO when fair value declines during the reporting period. Held-to-maturity, private-label residential MBS are measured at fair value using the same methodology and significant assumptions utilized for available-for-sale private-label residential MBS. If available, broker price opinions are used to measure impaired MPF Loans or REO. If a current broker price opinion is not available, we estimate fair value based on current actual loss severity rates we have incurred on sales, excluding any estimated selling costs. See Note 8 - Allowance for Credit Losses for further details. Significant increases (decreases) in the loss severity rate input in isolation may result in a significantly lower (higher) fair value measurement.

	June 30, 2012						December 31, 2011
	Level 1		Level  2		Level  3		Level 1		Level  2		Level  3
Held-to-maturity - Private-label residential MBS	$	—	$	—	$	2	$	—	$	—	$	9
Impaired MPF Loans	—		—		184		—		—		193
Real estate owned	—		—		14		—		—		16
Total non-recurring assets	$	—	$	—	$	200	$	—	$	—	$	218

Fair Value Option

We elected the fair value option for advances, discount notes, and short-term consolidated obligation bonds for which hedge accounting treatment may not be achieved. Specifically, hedge accounting may not be achieved in cases where it may be difficult to pass prospective or retrospective effectiveness testing under derivative hedge accounting guidance even though the interest rate swaps used to hedge these financial instruments have matching terms. Accordingly, electing the fair value option allows us to better match the change in fair value of the advance, discount note, and short-term consolidated obligation bonds with the interest rate swap economically hedging it.

Under the fair value option, fair value is used for both the initial and subsequent measurement of the designated assets and liabilities, with the changes in fair value recognized in non-interest gain (loss). Interest income and interest expense carried on other financial assets or liabilities carried at fair value is recognized under the interest method based solely on the contractual amount of interest due or unpaid. Any transaction fees or costs are immediately recognized into other non-interest gain (loss) or other non-interest expense.

The following tables summarize the activity related to financial assets and liabilities for which we elected the fair value option: 

	June 30, 2012								June 30, 2011
			Consolidated Obligation								Consolidated Obligation
	Advances		Bonds			Discount Notes			Advances		Bonds			Discount Notes
For the three months ended
Balance beginning of period	$	9	$	(3,132	)	$	(9,268	)	$	6	$	(5,479	)	$	(2,501	)
New transactions elected for fair value option	—		(6,565		)	—			3		(3,300		)	(150		)
Maturities and extinguishments	—		2,680			5,136			—		4,705			1,450
Net gain (loss) on instruments held at fair value	—		2			—			—		(8		)	—
Change in accrued interest and other	—		(2		)	(3		)	—		9			(1		)
Balance end of period	$	9	$	(7,017	)	$	(4,135	)	$	9	$	(4,073	)	$	(1,202	)
For the six months ended
Balance beginning of period	$	9	$	(2,631	)	$	(11,466	)	$	4	$	(9,425	)	$	(4,864	)
New transactions elected for fair value option	—		(8,890		)	—			5		(4,159		)	(150		)
Maturities and extinguishments	—		4,500			7,336			—		9,519			3,816
Net gain (loss) on instruments held at fair value	—		6			2			—		(13		)	—
Change in accrued interest and other	—		(2		)	(7		)	—		5			(4		)
Balance end of period	$	9	$	(7,017	)	$	(4,135	)	$	9	$	(4,073	)	$	(1,202	)

For items recorded under the fair value option, the related contractual interest income and contractual interest expense is recorded as part of net interest income on the statements of income. The remaining change in fair value for instruments in which the fair value option has been elected is recorded in non-interest gain (loss) on instruments held under fair value option in the statements of income. We determined that no adjustments to the fair values of our instruments recorded under the fair value option for instrument-specific credit risk were necessary as of the dates presented.

The following table reflects the difference between the aggregate unpaid principal balance (UPB) outstanding and the aggregate fair value for advances and consolidated obligation bonds for which the fair value option has been elected. None of the advances were 90 days or more past due or on nonaccrual status.

	June 30, 2012									December 31, 2011
As of	Unpaid Principal Balance			Fair Value			Fair Value Over (Under) UPB			Unpaid Principal Balance			Fair Value			Fair Value Over (Under) UPB
Advances	$	9		$	9		$	—		$	9		$	9		$	—
Consolidated obligation bonds	(7,020		)	(7,017		)	(3		)	(2,630		)	(2,631		)	1
Consolidated obligation discount notes	(4,135		)	(4,135		)	—			(11,465		)	(11,466		)	1

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Commitments and Contingencies (Tables)

6 Months Ended

Jun. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

Off-Balance Sheet Commitments [Table Text Block]

The following table shows our commitments outstanding but not yet incurred or recorded in our statements of condition.

As of	June 30, 2012						December 31, 2011
	Expire within one year		Expire after one year		Total		Expire within one year		Expire after one year		Total
Unsettled consolidated obligation bonds	$	3,815	$	—	$	3,815	$	150	$	—	$	150
Member standby letters of credit	286		281		567		296		273		569
Housing authority standby bond purchase agreements	70		396		466		44		282		326
MPF Xtra mortgage purchase commitments which will be concurrently resold to Fannie Mae	603		—		603		250		—		250
MPF Loan mortgage purchase commitments for portfolio	5		—		5		1		—		1
Advance commitments	243		212		455		—		—		—
Total	$	5,022	$	889	$	5,911	$	741	$	555	$	1,296

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Transactions with Members and Other FHLBs

6 Months Ended

Jun. 30, 2012

Related Party Transactions [Abstract]

Related Party Transactions Disclosure [Text Block]

Transactions with Members and Other FHLBs

Related Parties

We are a member-owned cooperative. We define related parties as members that own 10% or more of our capital stock or members whose officers or directors also serve on our Board of Directors. Capital stock ownership is a prerequisite to transacting any member business with us. Members and former members own all of our capital stock.

We conduct our advances business almost exclusively with members. Therefore, in the normal course of business, we extend credit to members whose officers and directors may serve on our Board of Directors. We extend credit to members whose officers or directors may serve as our directors on market terms that are no more favorable to them than the terms of comparable transactions with other members who are not considered related parties. In addition, we may purchase short-term investments, Federal Funds, and MBS from members (or affiliates of members). All investments are market rate transactions and all MBS are purchased through securities brokers or dealers. Derivative transactions with members and affiliates are executed at market rates.

Members

The table below summarizes balances we had with our members as defined above as related parties (including their affiliates) as reported in the statements of condition as of the dates indicated. Members represented in these tables may change between periods presented, to the extent that our related parties change, based on changes in the composition of our Board membership.

	June 30, 2012		December 31, 2011
Assets - Advances	$	2,513	$	3,515
Liabilities - Deposits	83		69
Equity - Capital Stock	270		399

Other FHLBs

Material amounts of transactions with other FHLBs, if any, are parenthetically identified on the face of our Financial Statements.

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Accumulated Other Comprehensive Income (Loss) (Details) (USD $) In Millions, unless otherwise specified			6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011	Jun. 30, 2012 Accumulated Other Comprehensive Income (Loss) [Member]	Jun. 30, 2011 Accumulated Other Comprehensive Income (Loss) [Member]	Jun. 30, 2012 Net Unrealized on Cash Flow Hedges [Member]	Jun. 30, 2011 Net Unrealized on Cash Flow Hedges [Member]	Jun. 30, 2012 Post-Retirement Plans [Member]	Jun. 30, 2011 Post-Retirement Plans [Member]	Jun. 30, 2012 AFS Securities [Member] Net Unrealized Investment Gain (Loss) [Member]	Jun. 30, 2011 AFS Securities [Member] Net Unrealized Investment Gain (Loss) [Member]	Jun. 30, 2012 AFS Securities [Member] Non-credit OTTI [Member]	Jun. 30, 2011 AFS Securities [Member] Non-credit OTTI [Member]	Jun. 30, 2012 HTM Securities [Member] Net Unrealized Investment Gain (Loss) [Member]	Jun. 30, 2011 HTM Securities [Member] Net Unrealized Investment Gain (Loss) [Member]	Jun. 30, 2012 HTM Securities [Member] Non-credit OTTI [Member]	Jun. 30, 2011 HTM Securities [Member] Non-credit OTTI [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Accumulated Other Comprehensive Income (Loss), Beginning Balance	$ (221)	$ (431)	$ (431)	$ (483)	$ (1,049)	$ (561)	$ 2	$ 2	$ 1,113	$ 748	$ (26)	$ (34)	$ (5)	$ (8)	$ (466)	$ (630)
Net Change in the Period			210	187	(59)	(77)	0	0	212	157	5	11	2	1	50	95
Accumulated Other Comprehensive Income (Loss), Ending Balance	$ (221)	$ (431)	$ (221)	$ (296)	$ (1,108)	$ (638)	$ 2	$ 2	$ 1,325	$ 905	$ (21)	$ (23)	$ (3)	$ (7)	$ (416)	$ (535)

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Statements of Cash Flows (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011
Operating
Net cash provided by (used in) operating activities	$ (8)		$ 170
Investing
Net change Federal Funds sold	(747)		2,744
Net change securities purchased under agreements to resell	(1,275)		3,125
Advances -
Principal collected	83,077		49,024
Issued	(83,577)		(47,457)
MPF Loans held in portfolio -
Principal collected	1,952		2,197
Purchases	(34)		(23)
Trading securities -
Proceeds from maturities, sales, and paydowns	1,548		1,281
Purchases	(687)		(2,117)
Held-to-maturity securities -
Short-term held-to-maturity securities, net	(50)	[1]	209	[1]
Proceeds from maturities	1,003	[1]	1,254	[1]
Purchases	(18)	[1]	(1,000)	[1]
Available-for-sale securities -
Proceeds from maturities and sales	714		522
Proceeds from sale of foreclosed assets	35		34
Capital expenditures for software and equipment	(4)		(3)
Net cash provided by (used in) investing activities	1,937		9,790
Financing
Net change deposits	79		(196)
Maturities of securities sold under agreements to repurchase	(400)		0
Net proceeds from issuance of consolidated obligations -
Discount notes	191,476		582,256
Bonds	22,620		16,783
Payments for maturing and retiring consolidated obligations -
Discount notes	(193,443)		(584,049)
Bonds	(22,655)		(22,251)
Net proceeds (payments) on derivative contracts with financing element	(36)		(63)
Proceeds from issuance of capital stock	125		22
Payments for Repurchase of Common Stock	(645)		0
Redemptions of mandatory redeemable capital stock	(26)		0
Cash dividends paid	(2)		(1)
Net cash provided by (used in) financing activities	(2,907)		(7,499)
Net increase (decrease) in cash and due from banks	(978)		2,461
Cash and due from banks at beginning of year	1,002		282
Cash and due from banks at end of period	24		2,743
Supplemental
Capital stock reclassified to mandatorily redeemable capital stock	32		3
Transfer of MPF Loans to real estate owned	$ 41		$ 36

[1] a Short-term held-to-maturity securities, net consist of investment securities that have a maturity of less than 90 days when purchased. Proceeds from maturities and purchases consist of securities with maturities of 90 days or more.

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Statements of Condition (Parentheticals) (USD $) In Millions, except Per Share data, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Financial Instruments Owned and Pledged as Collateral [Line Items]
Trading Securities Pledged	$ 0	$ 15
Available-for-sale Securities Pledged	0	14
Held-to-maturity Securities Pledged	0	490
Advances Carried at Fair Value	9	9
Allowance for credit losses	(48)	(45)
Software and equipment, accumulated amortization/depreciation	(150)	(143)
Capital Stock Par Value	$ 100	$ 100
Subclass B-1 Shares Issued	1	0
Subclass B-2 Shares Issued	18	0
Subclass B-1 Shares Outstanding	1	0
Subclass B-2 Shares Outstanding	18	0
Shares Issued	19	24
Shares Outstanding	19	24
Fair Value of Held-to-Maturity Securities	11,336	12,131
Portion at Fair Value, Fair Value Disclosure [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Discount Notes Carried at Fair Value	4,135	11,466
Portion at Fair Value, Fair Value Disclosure [Member] | Consolidated Obligation Bonds [Member]
Financial Instruments Owned and Pledged as Collateral [Line Items]
Bonds Carried at Fair Value	$ 7,017	$ 2,631

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Consolidated Obligations

6 Months Ended

Jun. 30, 2012

Debt Disclosure [Abstract]

Consolidated Obligations [Text Block]

Consolidated Obligations

The following table presents our consolidated obligation bonds, for which we are the primary obligor, including callable bonds that are redeemable in whole, or in part, at our discretion on predetermined call dates.

As of June 30, 2012	Contractual Maturity		Weighted Average Interest Rate		Next Maturity or Call Date
Due in one year or less	$	9,132	2.64	%	$	24,403
One to two years	10,579		2.27	%	6,824
Two to three years	3,255		2.57	%	1,778
Three to four years	3,906		3.70	%	2,786
Four to five years	4,015		2.17	%	1,250
Thereafter	9,047		2.86	%	2,893
Total par value	$	39,934	2.64	%	$	39,934

The following table presents our consolidated obligation discount notes for which we are the primary obligor. All are due in one year or less.

	Carrying Value		Par Value		Weighted Average Interest Rate
As of June 30, 2012	$	23,439	$	23,443	0.05	%
As of December 31, 2011	25,404		25,411		0.05	%

The following table presents consolidated obligation bonds outstanding by call feature:

As of	June 30, 2012			December 31, 2011
Noncallable	$	22,077		$	24,479
Callable	17,857			15,485
Total par value	39,934			39,964
Bond premiums (discounts), net	16			19
Hedging adjustments	(74		)	(104		)
Fair value option adjustments	(4		)	1
Total consolidated obligation bonds	$	39,872		$	39,880

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Document and Entity Information Document (USD $) In Millions, except Share data, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jul. 31, 2012
Entity Information [Line Items]
Entity Registrant Name	Federal Home Loan Bank of Chicago
Entity Central Index Key	0001331451
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2012
Document Fiscal Year Focus	2012
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Shares Outstanding		18,462,251
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Public Float	$ 0

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Subordinated Notes

6 Months Ended

Jun. 30, 2012

Subordinated Debt [Abstract]

Subordinated Notes [Text Block]

Subordinated Notes

Our subordinated notes outstanding mature on June 13, 2016. The subordinated notes are not obligations of, and are not guaranteed by, the United States government or any FHLBs other than us. The subordinated notes are unsecured obligations and rank junior in priority of payment to our senior liabilities. Senior liabilities include all of our existing and future liabilities, such as deposits, consolidated obligations for which we are the primary obligor and consolidated obligations of the other FHLBs for which we are jointly and severally liable. For further description of our subordinated notes see Note 15 - Subordinated Notes in our 2011 Form 10-K.

Prior to conversion to our new capital structure, we were allowed to include a percentage of the outstanding principal amount of the subordinated notes (the Designated Amount) in determining compliance with our regulatory capital and minimum regulatory leverage requirements, maximum permissible holdings of MBS and unsecured credit, subject to 20% annual phase-outs that commenced June 14, 2011. At December 31, 2011, the Designated Amount of subordinated notes was $800 million.

After converting our capital stock as of January 1, 2012, we no longer include the Designated Amount of subordinated notes in calculating our maximum permissible holdings of MBS and unsecured credit or in determining compliance with our minimum regulatory capital requirements now that we are subject to the post-conversion capital requirements discussed in Note 13 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS).

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Statements of Income (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Interest income	$ 485	$ 569	$ 1,010	$ 1,155
Interest expense	347	439	713	900
Net interest income before provision for credit losses	138	130	297	255
Provision for credit losses	2	3	8	9
Net interest income	136	127	289	246
Non-interest gain (loss) on -
Total other-than-temporary impairment	0	(9)	(2)	(9)
Net non-credit portion reclassified to (from) statements of comprehensive income	(14)	(14)	(13)	(34)
Net other-than-temporary impairment (OTTI) charges, credit portion	(14)	(23)	(15)	(43)
Trading securities	(11)	(11)	(25)	(22)
Derivatives and hedging activities	(8)	(4)	3	(18)
Instruments held under fair value option	2	(8)	8	(13)
Other, net	4	3	8	6
Total non-interest gain (loss)	(27)	(43)	(21)	(90)
Non-interest expense -
Compensation and benefits	16	14	31	29
Other operating expenses	7	8	16	17
FHFA	2	2	4	6
Office of Finance	1	1	2	2
Other	6	4	9	11
Total non-interest expense	32	29	62	65
Income before assessments	77	55	206	91
Assessments -
Affordable Housing Program	8	4	21	7
Resolution Funding Corporation	0	10	0	17
Total assessments	8	14	21	24
Net Income	$ 69	$ 41	$ 185	$ 67

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Investment Securities

6 Months Ended

Jun. 30, 2012

Investments, Debt and Equity Securities [Abstract]

Marketable Securities [Text Block]

Investment Securities

Our major security types presented in the tables below are defined as follows:

• U.S. Government & other government related consists of the sovereign debt of the United States; debt issued by Fannie Mae, Freddie Mac, and the Federal Farm Credit Banks Funding Corporation; and non mortgage-backed securities of the Small Business Administration, Federal Deposit Insurance Corporation (FDIC), and Tennessee Valley Authority.

• Federal Family Education Loan Program - asset backed securities (FFELP ABS)

• Government Sponsored Enterprises (GSE) residential consists of mortgage-backed securities (MBS) issued by Fannie Mae and Freddie Mac.

• Government-guaranteed residential consists of MBS issued by Ginnie Mae.

• Private-label residential MBS

Gains and losses on sales of securities are determined using the specific identification method and are included in non-interest gain (loss) on the statements of income.

Pledged Collateral

We enter into bilateral collateral agreements and execute derivatives and other transactions with major banks and broker-dealers. We pledge investment securities as collateral under these agreements. See Note 9 - Derivatives and Hedging Activities.

Trading Securities

The following table presents the fair value of our trading securities:

As of	June 30, 2012		December 31, 2011
U.S. Government & other government related	$	1,888	$	2,737
MBS:
GSE residential	155		195
Government-guaranteed residential	3		3
Total MBS	158		198
Total trading securities	$	2,046	$	2,935

At June 30, 2012, and 2011, we had net year-to-date unrealized gains (losses) of $(25) million and $(21) million on trading securities still held at period end.

Amortized Cost Basis and Fair Value – Available-for-Sale Securities (AFS)

	Amortized Cost Basis		Non-Credit  OTTI Recognized  in AOCI (Loss)			Gross Unrealized Gains in AOCI		Gross Unrealized Losses in AOCI			Fair Value
As of June 30, 2012
U.S. Government & other government related	$	760	$	—		$	62	$	(2	)	$	820
FFELP ABS	7,425		—			486		(41		)	7,870
MBS:
GSE residential	11,516		—			768		(109		)	12,175
Government-guaranteed residential	2,806		—			163		—			2,969
Private-label residential	84		(21		)	—		(1		)	62
Total MBS	14,406		(21		)	931		(110		)	15,206
Total	$	22,591	$	(21	)	$	1,479	$	(153	)	$	23,896
As of December 31, 2011
U.S. Government & other government related	$	947	$	—		$	56	$	(2	)	$	1,001
FFELP ABS	7,796		—			398		(35		)	8,159
MBS:
GSE residential	11,565		—			658		(91		)	12,132
Government-guaranteed residential	2,831		—			130		—			2,961
Private-label residential	90		(26		)	—		(1		)	63
Total MBS	14,486		(26		)	788		(92		)	15,156
Total	$	23,229	$	(26	)	$	1,242	$	(129	)	$	24,316

Amortized Cost, Carrying Value, and Fair Value - Held-to-Maturity Securities (HTM)

	Amortized Cost Basis		Non-credit OTTI Recognized  in AOCI (Loss)			Carrying Value		Gross Unrecognized Holding  Gains		Gross Unrecognized Holding  Losses			Fair  Value
As of June 30, 2012
U.S. Government & other government related	$	2,594	$	—		$	2,594	$	126	$	—		$	2,720
State or local housing agency	26		—			26		—		—			26
MBS:
GSE residential	5,032		—			5,032		413		—			5,445
Government-guaranteed residential	1,373		—			1,373		41		—			1,414
Private-label residential	1,988		(416		)	1,572		177		(18		)	1,731
Total MBS	8,393		(416		)	7,977		631		(18		)	8,590
Total	$	11,013	$	(416	)	$	10,597	$	757	$	(18	)	$	11,336
As of December 31, 2011
U.S. Government & other government related	$	2,573	$	—		$	2,573	$	104	$	—		$	2,677
State or local housing agency	27		—			27		—		—			27
MBS:
GSE residential	5,761		—			5,761		423		—			6,184
Government-guaranteed residential	1,414		—			1,414		34		—			1,448
Private-label residential	2,168		(466		)	1,702		145		(52		)	1,795
Total MBS	9,343		(466		)	8,877		602		(52		)	9,427
Total	$	11,943	$	(466	)	$	11,477	$	706	$	(52	)	$	12,131

Aging of Unrealized Temporary Losses

The following tables present unrealized temporary losses on our AFS and HTM portfolio for periods under 12 months and for 12 months or more. We recognized no OTTI charges on these unrealized loss positions because we expect to recover the entire amortized cost basis, we do not intend to sell these securities, and we believe it is more likely than not that we will not be required to sell them prior to recovering their amortized cost basis. In the tables below, in cases where the fair value or gross unrealized losses for an investment category is insignificant, we don't report a balance.

Available-for-Sale Securities

	Less than 12 Months					12 Months or More						Total
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses				Fair Value		Gross Unrealized Losses
As of June 30, 2012
U.S. Government & other government related	$	82	$	(2	)	$	—	$	—			$	82	$	(2	)
FFELP ABS	112		(1		)	1,141		(40		)		1,253		(41		)
MBS:
GSE residential	4,115		(109		)	—		—				4,115		(109		)
Private-label residential	—		—			62		(22		)	a	62		(22		)	a
Total MBS	4,115		(109		)	62		(22		)		4,177		(131		)
Total available-for-sale securities	$	4,309	$	(112	)	$	1,203	$	(62	)		$	5,512	$	(174	)
As of December 31, 2011
U.S. Government & other government related	$	98	$	(2	)	$	—	$	—			$	98	$	(2	)
FFELP ABS	223		(3		)	1,203		(32		)		1,426		(35		)
MBS:
GSE residential	4,073		(91		)	—		—				4,073		(91		)
Government-guaranteed residential	33		—			80		—				113		—
Private-label residential	—		—			63		(27		)	a	63		(27		)	a
Total MBS	4,106		(91		)	143		(27		)		4,249		(118		)
Total available-for-sale securities	$	4,427	$	(96	)	$	1,346	$	(59	)		$	5,773	$	(155	)

^a  Includes $33 million and $28 million of gross unrealized/unrecognized recoveries in fair value at June 30, 2012, and at December 31, 2011.

Held-to-Maturity Securities

	Less than 12 Months				12 Months or More					Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
As of June 30, 2012
U.S. Government & other government related	$	17	$	—	$	—	$	—		$	17	$	—
MBS:
GSE residential	—		—		37		—			37		—
Private-label residential	—		—		1,578		(434		)	1,578		(434		)
Total MBS	—		—		1,615		(434		)	1,615		(434		)
Total held-to-maturity securities	$	17	$	—	$	1,615	$	(434	)	$	1,632	$	(434	)
As of December 31, 2011
U.S. Government & other government related	$	7	$	—	$	—	$	—		$	7	$	—
MBS:
GSE residential	—		—		37		—			37		—
Private-label residential	—		—		1,653		(518		)	1,653		(518		)
Total MBS	—		—		1,690		(518		)	1,690		(518		)
Total held-to-maturity securities	$	7	$	—	$	1,690	$	(518	)	$	1,697	$	(518	)

Contractual Maturity Terms

The table below presents the amortized cost basis and fair value of AFS and HTM securities by contractual maturity, excluding ABS and MBS securities. These securities are excluded because their expected maturities may differ from their contractual maturities if borrowers of the underlying loans elect to prepay their loans.

	Available-for-Sale				Held-to-Maturity
As of June 30, 2012	Amortized Cost		Fair  Value		Amortized Cost		Fair  Value
Year of Maturity -
Due in one year or less	$	—	$	—	$	805	$	812
Due after one year through five years	—		—		65		66
Due after five years through ten years	253		272		515		532
Due after ten years	507		548		1,235		1,336
Total	$	760	$	820	$	2,620	$	2,746

Other-Than-Temporary Impairment

We recognized credit losses into earnings on securities in an unrealized loss position for which we do not expect to recover the entire amortized cost basis. Non-credit losses are recognized in AOCI since we do not intend to sell these securities and we believe it is more likely than not that we will not be required to sell any investment security before the recovery of its amortized cost basis. The non-credit loss in AOCI on HTM securities will be accreted back into the HTM securities over their remaining lives as an increase to the carrying value, since we ultimately expect to collect these amounts. See Statements of Comprehensive Income on page 5.

Significant Inputs Used on OTTI Securities

Our OTTI analysis of our private-label MBS includes key modeling assumptions, significant inputs, and methodologies provided by an FHLB System OTTI Committee. We use the information provided to generate cash flow projections used in analyzing credit losses and determining OTTI for private-label MBS. The OTTI Committee was formed by the FHLBs to achieve consistency among the FHLBs in their analyses of the OTTI of private-label MBS. We are responsible for making our own determination of impairment, which includes determining the reasonableness of assumptions, significant inputs, and methodologies used, and performing the required present value calculations using appropriate historical cost bases and yields. 

In cases where the fair value of a private-label MBS is less than its amortized cost basis at the balance sheet date, we assess whether its entire amortized cost basis will be recovered. Specifically, we perform a cash flow analysis for substantially all of these securities that utilizes two models provided by independent third parties.

The first model considers borrower characteristics and the particular attributes of the loans underlying the securities, in conjunction with assumptions about future changes in home prices and interest rates, prepayment rates, default rates, 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), which are based upon an assessment of the individual housing markets. 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 urban area with a population of 10,000 or more people.

The second model uses the month-by-month projections of future loan performance derived from the first model and allocates the projected loan level cash flows and losses to the various security classes in the securitization structure in accordance with its prescribed cash flow and loss allocation rules.

Our housing price forecast as of June 30, 2012 assumed current-to-trough home price declines ranging from 0.0% (for those housing markets that are believed to have reached their trough) to 6.0%. For those markets where further home price declines are anticipated, the declines were projected to occur over the 3- to 9-month period beginning April 1, 2012. From the trough, home prices were projected to recover using one of five different recovery paths that vary by housing market. For the vast majority of markets, the declines were projected to be in the narrower range from 1% to 4% over the 3-month period beginning April 1, 2012.

The following table presents the projected home price recovery by future month.

As of June 30, 2012	Recovery Range Annualized %
Months	Low	High
1-6	0.0%	2.8%
7-18	0.0%	3.0%
19-24	1.0%	4.0%
25-30	2.0%	4.0%
31-42	2.0%	5.0%
43-66	2.0%	6.0%
Thereafter	2.3%	5.6%

The table below presents the inputs we used to measure the amount of the credit loss recognized in earnings during the current period attributable to OTTI securities. The model used to estimate cash flows classifies the OTTI securities as either prime, Alt-A, or subprime based on an assessment as of the current period rather than the classification at the time of issuance.

			Prepayment Rates			Default Rates			Loss Severities			Credit Enhancement
			%	Range %		%	Range %		%	Range %		%	Range %
As of June 30, 2012	Unpaid Principal Balance		Weighted Average	Low	High	Weighted Average	Low	High	Weighted Average	Low	High	Weighted Average	Low	High
2006	$	588	7.0	6.0	8.0	35.0	30.0	43.0	41.0	37.0	47.0	1.0	—	7.0
2004 & prior	2		29.0	29.0	29.0	—	—	—	—	—	—	41.0	41.0	41.0
Total Prime	590		8.0	6.0	29.0	35.0	—	43.0	41.0	—	47.0	1.0	—	41.0
2006	23		5.0	5.0	5.0	41.0	41.0	41.0	57.0	57.0	57.0	5.0	5.0	5.0
Total Alt-A	23		5.0	5.0	5.0	41.0	41.0	41.0	57.0	57.0	57.0	5.0	5.0	5.0
Total	$	613	7.0	5.0	29.0	35.0	—	43.0	42.0	—	57.0	1.0	—	41.0

In the following two tables, we classify our private-label MBS as prime, subprime, or Alt-A based upon the nature of the majority of underlying mortgages collateralizing each security based on the issuer's classification, or as published by a nationally recognized statistical rating organization (NRSRO), at the time of issuance of the MBS.  On October 15, 2010, we instituted litigation relating to sixty-four private label MBS bonds purchased by us in an aggregate original principal amount of approximately $4.29 billion. Our complaints assert claims for untrue or misleading statements in the sale of securities, and it is possible that the classifications of private-label MBS, as well as other statements made about the securities by the issuer, are inaccurate. 

The following table presents the current outstanding balances on private-label MBS that were other-than-temporarily impaired at some point during the life of the securities. This table does not include HTM and AFS securities that are in an unrealized loss position, which have not had an OTTI charge during the life of the security.

As of June 30, 2012	Unpaid Principal Balance		Amortized Cost Basis		Carrying Value		Fair Value
Private-label residential MBS:
Alt-A	$	129	$	82	$	61	$	61
Total OTTI AFS securities	$	129	$	82	$	61	$	61
Private-label residential MBS:
Prime	$	1,471	$	1,141	$	848	$	1,003
Subprime	863		564		441		454
Total OTTI HTM securities	$	2,334	$	1,705	$	1,289	$	1,457

We recognized OTTI as presented in the following table. Net non-credit portion reclassified (from) to AOCI represents the net amount of impairment losses recognized into earnings from AOCI or reclassified to AOCI from earnings.

	Total OTTI			Net Non-credit Portion (from) to AOCI			OTTI Credit Portion
Three months ended June 30, 2012
Prime	$	—		$	(14	)	$	(14	)
Alt-A	—			—			—
Subprime	—			—			—
Total OTTI	$	—		$	(14	)	$	(14	)
Three months ended June 30, 2011
Prime	$	—		$	(17	)	$	(17	)
Alt-A	—			(1		)	(1		)
Subprime	(9		)	4			(5		)
Total OTTI	$	(9	)	$	(14	)	$	(23	)
Six months ended June 30, 2012
Prime	$	—		$	(14	)	$	(14	)
Alt-A	—			—			—
Subprime	(2		)	1			(1		)
Total OTTI	$	(2	)	$	(13	)	$	(15	)
Six months ended June 30, 2011
Prime	$	—		$	(24	)	$	(24	)
Alt-A	—			(6		)	(6		)
Subprime	(9		)	(4		)	(13		)
Total OTTI	$	(9	)	$	(34	)	$	(43	)

The following table presents the changes in the cumulative amount of credit losses (recognized into earnings) on OTTI investment securities for the periods stated.

Three months ended June 30,	2012			2011
Beginning Balance	$	712		$	672
Additions:
Credit losses on securities for which OTTI was not previously recognized	—			—
Additional credit losses on securities for which an OTTI charge was previously recognized	14			23
Total OTTI credit losses recognized in the period	14			23
Reductions:
Securities sold, matured, paid down or prepaid over the period	—			(1		)
Increases in cash flows expected to be collected, recognized over the remaining life of the security	(2		)	—
Ending Balance	$	724		$	694
Six months ended June 30,
Beginning Balance	$	712		$	653
Additions:
Credit losses on securities for which OTTI was not previously recognized	—			—
Additional credit losses on securities for which an OTTI charge was previously recognized	15			43
Total OTTI credit losses recognized in the period	15			43
Reductions:
Securities sold, matured, paid down or prepaid over the period	—			—
Increases in cash flows expected to be collected, recognized over the remaining life of the security	(3		)	(2		)
Ending Balance	$	724		$	694

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Interest Income and Interest Expense

6 Months Ended

Jun. 30, 2012

Interest Income and Interest Expense [Abstract]

Interest Income and Interest Expense Disclosure [Text Block]

Interest Income and Interest Expense

The following table presents interest income and interest expense for the periods indicated:

	Three months ended June 30,						Six months ended June 30,
	2012			2011			2012			2011
Interest income -
Federal Funds sold	$	—		$	—		$	1		$	2
Securities purchased under agreements to resell	1			1			2			4
Interest bearing deposits	1			—			1			—
Investment securities -
Trading	14			17			31			31
Available-for-sale	161			162			326			327
Held-to-maturity	110			130			224			265
Total investment securities	285			309			581			623
Advances	46			62			94			130
Advance prepayment fees, net of fair value hedge adjustments of    $(2), $(7), $(24), and $(7)	9			5			35			5
Total Advances	55			67			129			135
MPF Loans held in portfolio	147			194			302			395
Less: Credit enhancement fees	(4		)	(2		)	(6		)	(4		)
MPF Loans held in portfolio, net	143			192			296			391
Total interest income	485			569			1,010			1,155
Interest expense -
Securities sold under agreements to repurchase	—			5			—			9
Consolidated obligations -
Discount notes	77			92			153			190
Bonds	255			328			531			673
Total consolidated obligations	332			420			684			863
Subordinated notes	15			14			29			28
Total interest expense	347			439			713			900
Net interest income before provision for credit losses	138			130			297			255
Provision for credit losses	2			3			8			9
Net interest income	$	136		$	127		$	289		$	246

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Commitments and Contingencies

6 Months Ended

Jun. 30, 2012

Commitments and Contingencies Disclosure [Abstract]

Commitments and Contingencies [Text Block]

Commitments and Contingencies

The following table shows our commitments outstanding but not yet incurred or recorded in our statements of condition.

As of	June 30, 2012						December 31, 2011
	Expire within one year		Expire after one year		Total		Expire within one year		Expire after one year		Total
Unsettled consolidated obligation bonds	$	3,815	$	—	$	3,815	$	150	$	—	$	150
Member standby letters of credit	286		281		567		296		273		569
Housing authority standby bond purchase agreements	70		396		466		44		282		326
MPF Xtra mortgage purchase commitments which will be concurrently resold to Fannie Mae	603		—		603		250		—		250
MPF Loan mortgage purchase commitments for portfolio	5		—		5		1		—		1
Advance commitments	243		212		455		—		—		—
Total	$	5,022	$	889	$	5,911	$	741	$	555	$	1,296

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Regulatory Actions

6 Months Ended

Jun. 30, 2012

Regulatory Actions [Abstract]

Regulatory Actions [Text Block]

Regulatory Actions

On April 18, 2012, the FHFA terminated the Consent Order to Cease and Desist (the C&D Order) that we entered into with the Federal Housing Finance Board in October 2007. The C&D Order placed several requirements on us, including among other things, restrictions on the repurchase and redemption of capital stock, prior approval of dividend declarations and submission of a revised Capital Plan, as further described in Note 16 - Regulatory Actions in our 2011 Form 10-K.

In connection with operating the Bank after termination of the C&D Order, our Board of Directors adopted a resolution on March 30, 2012, which included the following:

• As required by the FHFA in connection with the approval of our Capital Plan, we will continue to obtain FHFA approval for any new investments that have a term to maturity in excess of 270 days until such time as our MBS portfolio is less than three times our total regulatory capital and our advances represent more than 50% of our total assets.

• In addition to the requirements to declare and pay dividends in accordance with our Retained Earnings and Dividend Policy, dividends paid on either Class B-1 stock or Class B-2 stock in any given quarter must not exceed the average of three-month LIBOR for that quarter on an annualized basis. We may, with approval of the Board, request approval from the FHFA to pay dividends in excess of this limit in advance of a coming calendar year.

• We must maintain retained earnings at a level equal to a “floor” amount, which is the greater of our retained earnings as of each immediately preceding year-end or $1.321 billion, and will not pay a dividend without prior written approval by the FHFA if the payment of such dividend would cause our retained earnings to be reduced below the “floor” amount. Our retained earnings at December 31, 2011, were $1.321 billion.

• We will continue to execute and comply with our plan to repurchase excess capital stock of members over a period of time (Repurchase Plan) as approved by the FHFA in December 2011. Once the Repurchase Plan terminates, we will continue to repurchase excess capital stock held by members on a quarterly basis but only if we maintain compliance with the financial and capital thresholds set forth in the Repurchase Plan, as previously disclosed in Note 17 - Capital Stock and Mandatorily Redeemable Capital Stock (MRCS) in our 2011 Form 10-K.

Our Board may not modify or terminate this resolution without written consent by the Director of the FHFA.

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Allowance for Credit Losses

6 Months Ended

Jun. 30, 2012

Allowance for Credit Losses [Abstract]

Allowance for Credit Losses [Text Block]

Allowance for Credit Losses

We have established an allowance methodology for each of our portfolio segments:

•credit products (advances, letters of credit and other extensions of credit to borrowers);

•conventional MPF Loans held for portfolio;

•government MPF Loans held for portfolio; and

•term Federal Funds sold and term securities purchased under agreements to resell.

For detailed information on these methodologies and our accounting policies please see Note 9 - Allowance for Credit Losses in our 2011 Form 10-K.

Credit Products

For the periods presented, we had no credit products that were past due, on nonaccrual status, or considered impaired. In addition, there have been no troubled debt restructurings related to our credit products during the periods then ended. Based upon the collateral we held as security, our credit extension and collateral policies, our credit analysis and the repayment history on credit products, we do not believe that any credit losses have been incurred on our credit products; accordingly, we have not recorded any allowance for credit losses for our credit products. Additionally, no liability was recorded to reflect an allowance for credit losses for our credit products with off-balance sheet credit exposures.

Conventional MPF Loans

MPF Risk Sharing Structure

For a definition of MPF Risk Sharing Structure see page F-36 in our 2011 Form 10-K. We share the risk of credit losses on conventional MPF Loan products with our PFIs (excluding the MPF Xtra product) by structuring potential losses on conventional MPF Loans into layers with respect to each master commitment (MC). We require that conventional MPF Loans held in our portfolio be credit enhanced at inception so that our risk of loss is limited to be equivalent to the losses of an investor in an AA rated mortgage backed security. As a part of our methodology to determine the amount of credit enhancement necessary, we analyze the risk characteristics of each MPF Loan using a model licensed from an NRSRO. We use the model to evaluate loan data provided by the PFI as well as other relevant information.

The table below presents the impact of the MPF Risk Sharing Structure and severity rates on our allowance for credit losses. As of June 30, 2012, our Total Severity Rate for the MPF Risk Sharing Structure was 38.0%, which included a weighted average Credit Loss Severity Rate of 22.0% attributable to the MPF Loan pool and impaired collateral dependent MPF Loans. Comparable rates at December 31, 2011, were 35.0% and 19.3%. For detailed definitions of how Total Severity Rate and Credit Loss Severity Rate are calculated, see Loss Severity on page F-38 in our 2011 Form 10-K.

As of	June 30, 2012			December 31, 2011
Total estimated losses outstanding	$	96		$	97
Less: losses expected to be absorbed by MPF Risk Sharing Structure	(23		)	(23		)
Our share of total losses	73			74
Less: non-credit losses a	(31		)	(34		)
Credit losses	42			40
Plus: other estimated credit losses in the remaining portfolio	6			5
Allowance for credit losses on conventional MPF Loans	$	48		$	45

^a  Non-credit losses represent period costs on Real Estate Owned (REO), for example, real estate taxes and maintenance costs and the economic loss of interest income that was contractually due but which was not recognized in our financial statements as the impaired MPF Loans were placed on nonaccrual status.

The following table presents the changes in the allowance for credit losses on conventional MPF Loans and the recorded investment by impairment methodology.

	June 30, 2012			June 30, 2011
For the three months ended
Allowance for credit losses on conventional MPF Loans-
Balance, beginning of period	$	49		$	38
Losses charged to the allowance	(3		)	(2		)
Provision for credit losses	2			3
Balance, end of period	$	48		$	39
For the six months ended
Allowance for credit losses on conventional MPF Loans-
Balance, beginning of period	$	45		$	33
Losses charged to the allowance	(5		)	(3		)
Provision for credit losses	8			9
Balance, end of period	$	48		$	39
As of	June 30, 2012			December 31, 2011
Allowance assigned to conventional MPF Loans-
Specifically identified and individually evaluated for impairment	$	30		$	26
Homogeneous pools of loans and collectively evaluated for impairment	18			19
Total	$	48		$	45
Recorded Investment in Conventional MPF Loans-
Individually evaluated for impairment - with an allowance	$	197		$	204
Collectively evaluated for impairment	9,716			11,470
Total	$	9,913		$	11,674

Government MPF Loans Held for Portfolio

We invest in fixed-rate government MPF Loans which are insured or guaranteed by the Federal Housing Administration (FHA), the Department of Veterans Affairs (VA), the Rural Housing Service of the Department of Agriculture (RHS), and/or by the Department of Housing and Urban Development (HUD). The PFI provides and maintains insurance or a guaranty from these agencies. The PFI 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 MPF Loans. Any losses incurred on such loans that are not recovered from the issuer or guarantor, are absorbed by the servicing PFIs. Therefore, we only have credit risk for these loans if the servicing PFI fails to pay for losses not covered by FHA or HUD insurance, or VA or RHS guarantees. In this regard, based on our assessment of our servicing PFIs, we did not establish an allowance for credit losses for our government MPF Loan portfolio as of the periods presented. Further, due to the government guarantee or insurance, these loans are not placed on nonaccrual status.

Credit Quality Indicators - MPF Loans

The table below summarizes our recorded investment in MPF Loans by our key credit quality indicators.

	June 30, 2012									December 31, 2011
As of	Conventional			Government			Total			Conventional			Government			Total
Past due 30-59 days	$	191		$	135		$	326		$	222		$	161		$	383
Past due 60-89 days	60			45			105			74			55			129
Past due 90 days or more	278			243			521			303			248			551
Total past due	529			423			952			599			464			1,063
Total current	9,384			1,935			11,319			11,075			2,097			13,172
Total recorded investment	$	9,913		$	2,358		$	12,271		$	11,674		$	2,561		$	14,235
In process of foreclosure a	$	177		$	100		$	277		$	193		$	63		$	256
Serious delinquency rate b	2.83		%	10.30		%	4.27		%	2.62		%	9.69		%	3.89		%
Past due 90 days or more still accruing interest c	$	114		$	243		$	357		$	128		$	248		$	376
On nonaccrual status	$	201		$	—		$	201		$	211		$	—		$	211

^a  Includes MPF Loans for which our master servicer has reported that the foreclosure process has been initiated or that our PFI servicer is seeking the deed to the underlying collateral in lieu of foreclosure.  It should be noted that although a MPF Loan is in the process of foreclosure, it does not necessarily mean that foreclosure is probable.

^b  MPF Loans that are 90 days or more past due or in the process of foreclosure as a percentage of the total recorded investment.

^c  Consists of MPF Loans that are either government mortgage loans or conventional mortgage loans that are well secured (by collateral that have a realizable value sufficient to discharge the debt or by the guarantee or insurance, such as PMI, of a financially responsible party) and in the process of collection.

Troubled Debt Restructurings

We consider a troubled debt restructuring to have occurred when we grant a concession to a borrower that we would not otherwise consider for economic or legal reasons related to the borrower's financial difficulties.  An MPF Loan involved in our troubled debt restructuring program is individually evaluated for impairment when determining its related allowance for credit losses.  Credit loss is measured by factoring in expected cash shortfalls (i.e., loss severity rate) incurred as of the reporting date as well as the economic loss attributable to delaying the original contractual principal and interest due dates.

In the event a borrower qualifies for a troubled debt restructuring under our program, we typically modify the borrower's monthly payment for a period of up to 36 months to try to achieve a target housing expense ratio of not more than 31% of their monthly qualifying income.   Any and all delinquent interest on the loan may be capitalized as long as the resulting principal balance does not exceed the original principal balance, otherwise all delinquent interest is written off.  Next, we re-amortize the new outstanding balance to reflect a principal and interest payment for a term not to exceed 40 years and attempt to achieve the target housing expense ratio. This results 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 target housing expense ratio is still not met, we reduce the interest rate in 0.125% increments below the original note rate, to a floor rate of 3.00% for up to 36 months, in an effort to further reduce principal and interest payments again, until the target housing expense ratio is met.

The following table shows our recorded investment balance in troubled debt restructured loans:

	June 30, 2012						December 31, 2011
As of	Performing a		Nonperforming b		Total		Performing a		Nonperforming b		Total
Conventional MPF Loans	$	11	$	4	$	15	$	6	$	3	$	9

^a  Includes modified loans that are accruing interest.

^b  Includes all other modified loans, including those that are on nonaccrual status, in foreclosure, or in bankruptcy.

Our recorded investment in troubled debt restructurings on our conventional MPF Loans that occurred during the three and six months ended June 30, 2012, was $4 million and $5 million. These amounts represent both the pre- and post- modification amounts recorded in our statement of condition as of the date the troubled debt restructurings were consummated. The pre- and post- modification amounts are the same as we did not record any write-offs either due to the forgiveness of principal or a direct write-off due to a confirmed loss.

Troubled debt restructurings that were modified during the previous 12 months that subsequently defaulted since the date of the modification were $8 million as of June 30, 2012.

Individually Evaluated Impaired Loans

The following table summarizes the recorded investment, unpaid principal balance, and related allowance of impaired MPF Loans individually assessed for impairment, which includes impaired collateral dependent MPF Loans and troubled debt restructurings. We had no impaired MPF Loans without an allowance for either date.

	June 30, 2012						December 31, 2011
As of	Recorded Investment		Unpaid Principal Balance		Related Allowance		Recorded Investment		Unpaid Principal Balance		Related Allowance
Impaired conventional MPF Loans with an allowance	$	197	$	196	$	30	$	204	$	202	$	26

The following table summarizes the average recorded investment of impaired MPF Loans and related interest recognized:

	June 30, 2012				June 30, 2011
For the periods ended	Average Recorded Investment		Interest Income Recognized		Average Recorded Investment		Interest Income Recognized
Three months	$	199	$	2	$	135	$	2
Six months	201		5		127		3

Real Estate Owned

We had $46 million in REO, recorded in other assets, at June 30, 2012, and December 31, 2011.

Term Federal Funds Sold and Term Securities Purchased Under Agreements to Resell

These financing receivables are short-term and the recorded balance approximates fair value. All federal funds sold were repaid according to the contractual terms. Federal Funds are only evaluated for purposes of an allowance for credit losses if the investment is not paid when due.

Securities purchased under agreements to resell are considered collateralized financing arrangements and effectively represent short-term loans with highly rated counterparties. The terms of these loans are structured such that if the market values of the underlying securities decrease below the market value required as collateral, the counterparty must place an equivalent amount of additional securities as collateral or remit an equivalent amount of cash, or the dollar value of the resale agreement will be decreased accordingly. If an agreement to resell is deemed to be impaired, the difference between the fair value of the collateral and the amortized cost of the agreement is charged to earnings. Based upon the collateral held as security, we have determined that no allowance for credit losses was needed for our securities purchased under agreements to resell. All securities purchased under agreements to resell were repaid according to the contractual terms.

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Derivatives and Hedging Activities (Derivatives in Statement of Condition) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives Designated as Hedging Instruments	$ 25,218		$ 28,610
Derivative Assets Designated as Hedging Instruments	136		235
Derivative Liabilities Designated as Hedging Instruments	2,163		2,099
Notional Amount of Derivativs Not Designated ad Hedging Instruments	41,712		45,394
Derivativs Assets Not Designated as Hedging Instruments	1,334		1,364
Derivativs Liabilities Not Designated as Hedging Instruments	797		789
Notional Amount of Derivatives	66,930		74,004
Derivative Assets, Before Netting and Collateral Adjustments	1,470		1,599
Derivative Liabilities, Before Netting and Collateral Adjustments	2,960		2,888
Derivative Assets, Exposure at fair value	77	[1]	138	[1]
Derivative Liabilities, Exposure at fair value	1,567	[1]	1,427	[1]
Derivative Assets	52		40
Derivative Liabilities	70		206
Net accrued interest receivable	135		153
Netting Adjustment [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Netting and Collateral	(1,393)	[2]	(1,461)	[2]
Derivative Liability, Netting and Collateral Adjustments	(1,393)	[2]	(1,461)	[2]
Cash Collateral and Related Accrued Interest [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Netting and Collateral	(25)		(98)
Derivative Liability, Netting and Collateral Adjustments	(1,497)		(1,221)
Interest Rate Swap [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives Designated as Hedging Instruments	25,218		28,240
Derivative Assets Designated as Hedging Instruments	136		203
Derivative Liabilities Designated as Hedging Instruments	2,163		2,099
Notional Amount of Derivativs Not Designated ad Hedging Instruments	31,298		38,159
Derivativs Assets Not Designated as Hedging Instruments	903		927
Derivativs Liabilities Not Designated as Hedging Instruments	784		785
Interest Rate Swaption [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives Designated as Hedging Instruments	0		370
Derivative Assets Designated as Hedging Instruments	0		32
Derivative Liabilities Designated as Hedging Instruments	0		0
Notional Amount of Derivativs Not Designated ad Hedging Instruments	7,290		4,820
Derivativs Assets Not Designated as Hedging Instruments	173		179
Derivativs Liabilities Not Designated as Hedging Instruments	0		0
Interest Rate Caps or Floors [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivativs Not Designated ad Hedging Instruments	1,913		1,913
Derivativs Assets Not Designated as Hedging Instruments	245		254
Derivativs Liabilities Not Designated as Hedging Instruments	0		0
Mortgage Delivery Commitments [Member]
Derivatives, Fair Value [Line Items]
Notional Amount of Derivativs Not Designated ad Hedging Instruments	1,211		502
Derivativs Assets Not Designated as Hedging Instruments	13		4
Derivativs Liabilities Not Designated as Hedging Instruments	13		4
Derivative Financial Instruments, Assets [Member]
Derivatives, Fair Value [Line Items]
Net accrued interest receivable	$ 7		$ 13

[1] Includes net accrued interest receivable of $7 million as of June 30, 2012, and $13 million as of December 31, 2011.

[2] Amounts represent the effect of legally enforceable master netting agreements that allow us to settle positive and negative positions.

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Advances

6 Months Ended

Jun. 30, 2012

Advances [Abstract]

Advances [Text Block]

Advances

We offer a wide range of fixed- and variable-rate advance products with different maturities, interest rates, payment characteristics and optionality. The following table presents our advances by callable/putable features:

As of	June 30, 2012		December 31, 2011
Noncallable/nonputable	$	12,325	$	11,456
Callable	779		806
Putable	2,486		2,828
Total par value	15,590		15,090
Advance hedging adjustments	178		189
Other adjustments	29		12
Total advances	$	15,797	$	15,291

The following table presents our advances by redemption terms:

As of June 30, 2012	Amount		Weighted Average Interest Rate			Next Maturity or Call Date		Next Maturity or Put Date
Due in one year or less	$	6,149	0.85	%		$	6,924	$	8,441
One to two years	991		2.45	%		891		980
Two to three years	1,179		2.10	%		1,179		1,172
Three to four years	1,278		2.59	%		928		699
Four to five years	1,594		3.54	%		1,394		1,031
More than five years	4,399		1.60	%	a	4,274		3,267
Total par value	$	15,590	1.68	%		$	15,590	$	15,590

^a  Weighted average interest rate is due to the inclusion of a significant variable-rate advance.

Advances Concentration

As of June 30, 2012, the following advance borrowers exceeded 10% of our total advances outstanding: BMO Harris Bank N. A. with $2.4 billion or 15%, Associated Bank, National Association with $1.9 billion or 12%, and State Farm Bank, F.S.B. with $1.6 billion or 10% of total advances outstanding.

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MPF Loans

6 Months Ended

Jun. 30, 2012

Mortgage Loans on Real Estate [Abstract]

MPF Loans [Text Block]

MPF Loans

We developed the MPF Program to allow us to invest in mortgages to help fulfill our housing mission and provide an additional source of liquidity to our members. The MPF Program is a secondary mortgage market structure under which we acquired and funded eligible mortgage loans from or through PFIs, and in some cases we purchased participations in pools of eligible mortgage loans from other FHLBs (MPF Banks). MPF Loans are defined as conforming conventional and Government fixed-rate mortgage loans secured by one-to-four family residential properties with maturities ranging from 5 years to 30 years or participations in such mortgage loans.

The following table presents information on MPF Loans held in our portfolio by contractual maturity at time of purchase. All are fixed-rate. Government is comprised of loans insured by the Federal Housing Administration (FHA) or the Department of Housing and Urban Development (HUD) and loans guaranteed by the Department of Veteran Affairs (VA) or Department of Agriculture Rural Housing Service (RHS). MPF Loans outstanding continue to decrease as a result of our ongoing strategy to not add MPF Loans to our balance sheet, except for loans being acquired under our affordable housing programs.

As of	June 30, 2012			December 31, 2011
Medium term (15 years or less)	$	3,126		$	3,810
Long term (greater than 15 years)	8,920			10,155
Total unpaid principal balance	12,046			13,965
Net premiums, credit enhancement and deferred loan fees	45			53
MPF hedging adjustments	119			145
Total before allowance for credit losses	12,210			14,163
Allowance for credit losses	(48		)	(45		)
Total MPF Loans held in portfolio, net	$	12,162		$	14,118
Conventional	$	9,715		$	11,433
Government	2,331			2,532
Total unpaid principal balance	$	12,046		$	13,965

See Note 8 - Allowance for Credit Lossesfor information related to our credit risk on MPF Loans and allowance for credit losses methodology.

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Derivatives and Hedging Activities

6 Months Ended

Jun. 30, 2012

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Derivatives and Hedging Activities [Text Block]

Derivatives and Hedging Activities

Refer to Note 2 - Summary of Significant Accounting Polices in our 2011 Form 10-K for our accounting policies for derivatives.

Managing Credit Risk on Derivative Agreements

We are subject to credit risk due to the risk of nonperformance by counterparties to our derivative agreements. The degree of counterparty risk depends on the extent to which master netting arrangements are included in such contracts to mitigate the risk. We manage counterparty credit risk through credit analysis, collateral requirements and adherence to the requirements set forth in our policies and FHFA regulations. We require collateral agreements on all derivatives that establish collateral delivery thresholds. Additionally, collateral related to derivatives with member institutions includes collateral assigned to us, as evidenced by a written security agreement, and held by the member institution for our benefit. Based on credit analyses and collateral requirements, we do not anticipate any credit losses on our derivative agreements. SeeNote 15 - Fair Value Accounting for discussion regarding our fair value methodology for derivative assets and liabilities, including an evaluation of the potential for the fair value of these instruments to be affected by counterparty credit risk.

Our derivative agreements contain provisions that require us to post additional collateral with our counterparties if there is deterioration in our credit rating, except for those derivative agreements with a zero unsecured collateral threshold for both parties, in which case positions are required to be fully collateralized regardless of credit rating. If our credit rating is lowered by a major credit rating agency, such as Standard and Poor's or Moody’s, we would be required to deliver additional collateral on derivatives in net liability positions. If our credit rating had been lowered from its current rating to the next lower rating, we would have been required to deliver up to an additional $54 million of collateral at fair value to our derivatives counterparties at June 30, 2012.

We transact most of our derivatives with large banks and major broker-dealers. Some of these banks and broker-dealers or their affiliates buy, sell, and distribute consolidated obligations. We are not a derivative dealer and do not trade derivatives for speculative purposes.

The following table summarizes our derivatives, including cash collateral and related interest where we had the right to reclaim the collateral on derivative assets. The amounts where we had delivered excess collateral on derivative liabilities were insignificant for both periods presented.

	June 30, 2012								December 31, 2011
As of	Notional Amount		Derivative Assets			Derivative Liabilities			Notional Amount		Derivative Assets			Derivative Liabilities
Derivatives in hedge accounting relationships-
Interest rate swaps	$	25,218	$	136		$	2,163		$	28,240	$	203		$	2,099
Interest rate swaptions	—		—			—			370		32			—
Total	25,218		136			2,163			28,610		235			2,099
Derivatives not in hedge accounting relationships-
Interest rate swaps	31,298		903			784			38,159		927			785
Interest rate swaptions	7,290		173			—			4,820		179			—
Interest rate caps or floors	1,913		245			—			1,913		254			—
Mortgage delivery commitments	1,211		13			13			502		4			4
Total	41,712		1,334			797			45,394		1,364			789
Total before adjustments	$	66,930	1,470			2,960			$	74,004	1,599			2,888
Netting adjustments a			(1,393		)	(1,393		)			(1,461		)	(1,461		)
Exposure at fair value b			77			1,567					138			1,427
Cash collateral and related accrued interest			(25		)	(1,497		)			(98		)	(1,221		)
Derivative assets and liabilities			$	52		$	70				$	40		$	206

^a  Amounts represent the effect of legally enforceable master netting agreements that allow us to settle positive and negative positions.

^b  Includes net accrued interest receivable of $7 million as of June 30, 2012, and $13 million as of December 31, 2011.

The following tables present the components of derivatives and hedging activities as presented in the statements of income.

	Three months ended June 30,						Six months ended June 30,
For the periods ending	2012			2011			2012			2011
Fair value hedges -
Interest rate swaps	$	(7	)	$	(1	)	$	(3	)	$	6
Other	—			(2		)	1			(7		)
Fair value hedges - ineffectiveness net gain (loss)	(7		)	(3		)	(2		)	(1		)
Cash flow hedges - ineffectiveness net gain (loss)	—			12			2			14
Economic hedges -
Interest rate swaps	(44		)	(25		)	(46		)	(5		)
Interest rate swaptions	18			(12		)	18			(60		)
Interest rate caps/floors	4			14			(9		)	(10		)
Interest rate futures/TBA	—			—			—			—
Net interest settlements	21			10			40			44
Economic hedges - net gain (loss)	(1		)	(13		)	3			(31		)
Net gains (losses) on derivatives and hedging activities	$	(8	)	$	(4	)	$	3		$	(18	)

Fair Value Hedges

The following table presents, by type of hedged item, the gains (losses) on derivatives and the related hedged items in fair value hedging relationships and the effect of those derivatives on our net interest income.

	Gain (Loss) on Derivative			Gain (Loss) on Hedged Item			Total Gain (Loss) Ineffectiveness Recognized in Derivatives and Hedging Activities			Effect of Derivatives on Net Interest Income a			Hedge Adjustments Amortized into Net Interest Income b
Three months ended June 30, 2012
Hedged item type -
Available-for-sale securities	$	(113	)	$	109		$	(4	)	$	(33	)	$	—
Advances	(16		)	19			3			(21		)	(1		)
MPF Loans held for portfolio	2			(2		)	—			(1		)	(13		)
Consolidated obligation bonds	31			(37		)	(6		)	42			(7		)
Total	$	(96	)	$	89		$	(7	)	$	(13	)	$	(21	)
Three months ended June 30, 2011
Hedged item type -
Available-for-sale securities	$	(99	)	$	97		$	(2	)	$	(35	)	$	—
Advances	(26		)	29			3			(39		)	(7		)
MPF Loans held for portfolio	(5		)	2			(3		)	(2		)	(11		)
Consolidated obligation bonds	152			(153		)	(1		)	86			(9		)
Total	$	22		$	(25	)	$	(3	)	$	10		$	(27	)
Six months ended June 30, 2012
Hedged item type -
Available-for-sale investments	$	(77	)	$	75		$	(2	)	$	(65	)	$	—
Advances	(8		)	14			6			(45		)	(24		)
MPF Loans held for portfolio	1			—			1			(2		)	(27		)
Consolidated obligation bonds	7			(14		)	(7		)	80			(16		)
Total	$	(77	)	$	75		$	(2	)	$	(32	)	$	(67	)
Six months ended June 30, 2011
Hedged item type -
Available-for-sale investments	$	(84	)	$	82		$	(2	)	$	(67	)	$	—
Advances	17			(10		)	7			(86		)	(9		)
MPF Loans held for portfolio	(6		)	(2		)	(8		)	(5		)	(25		)
Consolidated obligation bonds	129			(127		)	2			160			(18		)
Total	$	56		$	(57	)	$	(1	)	$	2		$	(52	)

^a  Represents the effect of net interest settlements attributable to existing derivative hedging instruments on net interest income. The effect of derivatives on net interest income is included in the interest income/expense line item of the respective hedged item type.

^b  Amortization of hedge adjustments is included in the interest income/expense line item of the respective hedged item type.

Cash Flow Hedges

The following table presents our gains (losses) on our cash-flow hedging relationships. In the tables below, in cases where amounts are insignificant in the aggregate, we don't report a balance. See the Statements of Comprehensive Income on page 5 for more details on the effect of cash-flow hedges on AOCI.

	Effective Portion Recognized in AOCI Unrealized Gains (Losses)			Effective Portion Reclassified to Interest Income or Interest Expense Gain (Loss)			Ineffective Portion Recognized in Derivatives and Hedging Activities Gain (Loss)			Effect on Net Interest Income Gain (Loss) a
Three months ended June 30, 2012
Advances - interest rate floors	$	—		$	4		$	—	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(2		)	—			—
Consolidated obligation discount notes - interest rate swaps	(110		)	(1		)	—			(68		)
Consolidated obligation bonds - interest rate swaps	—			(1		)	—			—
Total	$	(110	)	$	—		$	—		$	(68	)
Three months ended June 30, 2011
Advances - interest rate floors	$	—		$	9		$	12	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(4		)	—			—
Consolidated obligation discount notes - interest rate swaps	(128		)	(1		)	—			(80		)
Consolidated obligation bonds - interest rate swaps	—			(1		)	—			—
Total	$	(128	)	$	3		$	12		$	(80	)
Six months ended June 30, 2012
Advances - interest rate floors	$	—		$	8		$	—	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(4		)	—			—
Consolidated obligation discount notes - interest rate swaps	(58		)	(2		)	2			(135		)
Consolidated obligation bonds - interest rate swaps	—			(3		)	—			—
Total	$	(58	)	$	(1	)	$	2		$	(135	)
Six months ended June 30, 2011
Advances - interest rate floors	$	—		$	22		$	12	b	$	—
Consolidated obligation discount notes - interest rate caps	—			(8		)	—			—
Consolidated obligation discount notes - interest rate swaps	(53		)	(2		)	2			(161		)
Consolidated obligation bonds - interest rate swaps	—			(2		)	—			—
Total	$	(53	)	$	10		$	14		$	(161	)

^a  Represents the effect of net interest settlements attributable to open derivative hedging instruments on net interest income. The effect of     derivatives on net interest income is included in the interest income/expense line item of the respective hedged item type.

^b  Represents the recognition of previously deferred cash flow hedge adjustments related to advances in cash flow hedge relationships that were prepaid during the period.

There were no amounts reclassified from AOCI into earnings for the periods presented as a result of the discontinuance of cash-flow hedges because the original forecasted transactions failed to occur by the end of the originally specified time period or within a two-month period thereafter. The deferred net gains on derivative instruments in AOCI that are expected to be reclassified to earnings during the next twelve months were $9 million as of June 30, 2012. The maximum length of time over which we are hedging our exposure to the variability in future cash flows for forecasted transactions, excluding those forecasted transactions related to the payment of variable interest on existing financial instruments, is 8 years.

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Consolidated Obligations (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Consolidated Obligation Bonds [Abstract]
Total consolidated obligation bonds	$ 39,872	$ 39,880
Consolidated Obligation Discount Notes [Abstract]
Carrying Value	23,439	25,404
Discount Notes [Member]
Consolidated Obligation Discount Notes [Abstract]
Carrying Value	23,439	25,404
Par Value	23,443	25,411
Weighted Average Interest Rate	0.05%	0.05%
Consolidated Obligation Bonds [Member]
Consolidated Obligation Bonds [Abstract]
Due in one year or less	9,132
One to two years	10,579
Two to three years	3,255
Three to four years	3,906
Four to five years	4,015
Thereafter	9,047
Total Par Value	39,934	39,964
Due in one year or less, Weighted Average Interest Rate	2.64%
One to two years, Weighted Average Interest Rate	2.27%
Two to three years, Weighted Average Interest Rate	2.57%
Three to four years, Weighted Average Interest Rate	3.70%
Four to five years, Weighted Average Interest Rate	2.17%
Thereafter, Weighted Average Interest Rate	2.86%
Total Weighted Average Interest Rate	2.64%
Bond premiums (discounts), net	16	19
Hedging adjustments	(74)	(104)
Fair value option adjustments	(4)	1
Total consolidated obligation bonds	39,872	39,880
Consolidated Obligation Bonds [Member] | Non Callable [Member]
Consolidated Obligation Bonds [Abstract]
Total Par Value	22,077	24,479
Consolidated Obligation Bonds [Member] | Callable [Member]
Consolidated Obligation Bonds [Abstract]
Total Par Value	17,857	15,485
Consolidated Obligation Bonds [Member] | Next Maturity or Call Date [Member]
Consolidated Obligation Bonds [Abstract]
Due in one year or less	24,403
One to two years	6,824
Two to three years	1,778
Three to four years	2,786
Four to five years	1,250
Thereafter	$ 2,893

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Regulatory Actions (Details) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Dec. 31, 2011
Regulatory Actions [Abstract]
New Investment Without FHFA Approval, Maximum Maturity	270 days
Minimum Mortgage Backed Securities Portofolio, Total Regulatory Capital Rati	300.00%
Minimum Advances Assets Ratio	50.00%
Regulatory Floor Minimum Level of Retained Earnings	$ 1,321
Retained earnings	$ 1,504	$ 1,321

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Derivatives and Hedging Activities (Cash Flow Hedges) (Details) (Cash Flow Hedges [Member], USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion Recognized in AOCI UnrealizedGains (Losses)	$ (110)		$ (128)		$ (58)		$ (53)
Effective Portion Reclassified to Interest Income or Interest Expense Gain (Loss)	0		3		(1)		10
Ineffective Portion Recognized in Derivatives and Hedging Activities Gain (Loss)	0		12		2		14
Effect on Net Interest Income Gain (Loss)	(68)	[1]	(80)	[1]	(135)	[1]	(161)	[1]
Advances [Member] | Interest Rate Floor [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion Recognized in AOCI UnrealizedGains (Losses)	0		0		0		0
Effective Portion Reclassified to Interest Income or Interest Expense Gain (Loss)	4		9		8		22
Ineffective Portion Recognized in Derivatives and Hedging Activities Gain (Loss)	0	[2]	12	[2]	0	[2]	12	[2]
Effect on Net Interest Income Gain (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Consolidated Obligation Discount Notes [Member] | Interest Rate Cap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion Recognized in AOCI UnrealizedGains (Losses)	0		0		0		0
Effective Portion Reclassified to Interest Income or Interest Expense Gain (Loss)	(2)		(4)		(4)		(8)
Ineffective Portion Recognized in Derivatives and Hedging Activities Gain (Loss)	0		0		0		0
Effect on Net Interest Income Gain (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Consolidated Obligation Discount Notes [Member] | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion Recognized in AOCI UnrealizedGains (Losses)	(110)		(128)		(58)		(53)
Effective Portion Reclassified to Interest Income or Interest Expense Gain (Loss)	(1)		(1)		(2)		(2)
Ineffective Portion Recognized in Derivatives and Hedging Activities Gain (Loss)	0		0		2		2
Effect on Net Interest Income Gain (Loss)	(68)	[1]	(80)	[1]	(135)	[1]	(161)	[1]
Consolidated Obligation Bonds [Member] | Interest Rate Swap [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Effective Portion Recognized in AOCI UnrealizedGains (Losses)	0		0		0		0
Effective Portion Reclassified to Interest Income or Interest Expense Gain (Loss)	(1)		(1)		(3)		(2)
Ineffective Portion Recognized in Derivatives and Hedging Activities Gain (Loss)	0		0		0		0
Effect on Net Interest Income Gain (Loss)	$ 0	[1]	$ 0	[1]	$ 0	[1]	$ 0	[1]

[1] Represents the effect of net interest settlements attributable to open derivative hedging instruments on net interest income. The effect of derivatives on net interest income is included in the interest income/expense line item of the respective hedged item type.

[2] Represents the recognition of previously deferred cash flow hedge adjustments related to advances in cash flow hedge relationships that were prepaid during the period.

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Accumulated Other Comprehensive Income (Loss) (Tables)

6 Months Ended

Jun. 30, 2012

Accumulated Other Comprehensive Income (Loss) [Abstract]

Schedule of Accumulated Other Comprehensive Income (Loss) [Table Text Block]

The following table summarizes the income (loss) in AOCI for the periods indicated:

	Net Unrealized on AFS		Non-credit OTTI on  AFS			Net Unrealized on HTM			Non-credit OTTI on HTM			Net Unrealized on Cash Flow Hedges			Post-Retirement Plans		Total
Balance, December 31, 2010	$	748	$	(34	)	$	(8	)	$	(630	)	$	(561	)	$	2	$	(483	)
Net change in the period	157		11			1			95			(77		)	—		187
Balance, June 30, 2011	$	905	$	(23	)	$	(7	)	$	(535	)	$	(638	)	$	2	$	(296	)
Balance, December 31, 2011	$	1,113	$	(26	)	$	(5	)	$	(466	)	$	(1,049	)	$	2	$	(431	)
Net change in the period	212		5			2			50			(59		)	—		210
Balance, June 30, 2012	$	1,325	$	(21	)	$	(3	)	$	(416	)	$	(1,108	)	$	2	$	(221	)

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Investment Securities (Other-than-temporarily Impaired Securities Movement) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Beginning Balance	$ 712	$ 672	$ 712	$ 653
Credit losses on securities for which OTTI was not previously recognized	0	0	0	0
Additional credit losses on securities for which an OTTI charge was previously recognized	14	23	15	43
Total OTTI credit losses recognized in the period	14	23	15	43
Securities sold, matured, paid down or prepaid over the period	0	(1)	0	0
Increases in cash flows expected to be collected, recognized over the remaining life of the security	(2)	0	(3)	(2)
Ending Balance	$ 724	$ 694	$ 724	$ 694

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Accumulated Other Comprehensive Income (Loss)

6 Months Ended

Jun. 30, 2012

Accumulated Other Comprehensive Income (Loss) [Abstract]

Accumulated Other Comprehensive Income (Loss)

Accumulated Other Comprehensive Income (Loss)

The following table summarizes the income (loss) in AOCI for the periods indicated:

	Net Unrealized on AFS		Non-credit OTTI on  AFS			Net Unrealized on HTM			Non-credit OTTI on HTM			Net Unrealized on Cash Flow Hedges			Post-Retirement Plans		Total
Balance, December 31, 2010	$	748	$	(34	)	$	(8	)	$	(630	)	$	(561	)	$	2	$	(483	)
Net change in the period	157		11			1			95			(77		)	—		187
Balance, June 30, 2011	$	905	$	(23	)	$	(7	)	$	(535	)	$	(638	)	$	2	$	(296	)
Balance, December 31, 2011	$	1,113	$	(26	)	$	(5	)	$	(466	)	$	(1,049	)	$	2	$	(431	)
Net change in the period	212		5			2			50			(59		)	—		210
Balance, June 30, 2012	$	1,325	$	(21	)	$	(3	)	$	(416	)	$	(1,108	)	$	2	$	(221	)

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Interest Income and Interest Expense (Tables)

6 Months Ended

Jun. 30, 2012

Interest Income and Interest Expense [Abstract]

Interest Income and Interest Expense [Table Text Block]

The following table presents interest income and interest expense for the periods indicated:

	Three months ended June 30,						Six months ended June 30,
	2012			2011			2012			2011
Interest income -
Federal Funds sold	$	—		$	—		$	1		$	2
Securities purchased under agreements to resell	1			1			2			4
Interest bearing deposits	1			—			1			—
Investment securities -
Trading	14			17			31			31
Available-for-sale	161			162			326			327
Held-to-maturity	110			130			224			265
Total investment securities	285			309			581			623
Advances	46			62			94			130
Advance prepayment fees, net of fair value hedge adjustments of    $(2), $(7), $(24), and $(7)	9			5			35			5
Total Advances	55			67			129			135
MPF Loans held in portfolio	147			194			302			395
Less: Credit enhancement fees	(4		)	(2		)	(6		)	(4		)
MPF Loans held in portfolio, net	143			192			296			391
Total interest income	485			569			1,010			1,155
Interest expense -
Securities sold under agreements to repurchase	—			5			—			9
Consolidated obligations -
Discount notes	77			92			153			190
Bonds	255			328			531			673
Total consolidated obligations	332			420			684			863
Subordinated notes	15			14			29			28
Total interest expense	347			439			713			900
Net interest income before provision for credit losses	138			130			297			255
Provision for credit losses	2			3			8			9
Net interest income	$	136		$	127		$	289		$	246

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Investment Securities (Securities Other-than-Temporarily Impaired) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012
Investment Securities [Line Items]
Unpaid Principal Balance	$ 613
AFS Securities [Member] | Private-label residential MBS [Member]
Investment Securities [Line Items]
Unpaid Principal Balance	129
Amortized Cost	82
Carrying Value	61
Fair Value	61
HTM Securities [Member] | Private-label residential MBS [Member]
Investment Securities [Line Items]
Unpaid Principal Balance	2,334
Amortized Cost	1,705
Carrying Value	1,289
Fair Value	1,457
Alt-A [Member]
Investment Securities [Line Items]
Unpaid Principal Balance	23
Alt-A [Member] | AFS Securities [Member] | Private-label residential MBS [Member]
Investment Securities [Line Items]
Unpaid Principal Balance	129
Amortized Cost	82
Carrying Value	61
Fair Value	61
Prime [Member]
Investment Securities [Line Items]
Unpaid Principal Balance	590
Prime [Member] | HTM Securities [Member] | Private-label residential MBS [Member]
Investment Securities [Line Items]
Unpaid Principal Balance	1,471
Amortized Cost	1,141
Carrying Value	848
Fair Value	1,003
Subprime [Member] | HTM Securities [Member] | Private-label residential MBS [Member]
Investment Securities [Line Items]
Unpaid Principal Balance	863
Amortized Cost	564
Carrying Value	441
Fair Value	$ 454

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Investment Securities (Available-for-sale Securities) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	$ 22,591	$ 23,229
Non-Credit OTTI Recognized in AOCI (Loss)	(21)	(26)
Gross Unrealized Gains in AOCI	1,479	1,242
Gross Unrealized Losses in AOCI	(153)	(129)
Fair Value	23,896	24,316
U.S. Government & Other Government Related [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	760	947
Non-Credit OTTI Recognized in AOCI (Loss)	0	0
Gross Unrealized Gains in AOCI	62	56
Gross Unrealized Losses in AOCI	(2)	(2)
Fair Value	820	1,001
FFELP ABS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	7,425	7,796
Non-Credit OTTI Recognized in AOCI (Loss)	0	0
Gross Unrealized Gains in AOCI	486	398
Gross Unrealized Losses in AOCI	(41)	(35)
Fair Value	7,870	8,159
GSE residential MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	11,516	11,565
Non-Credit OTTI Recognized in AOCI (Loss)	0	0
Gross Unrealized Gains in AOCI	768	658
Gross Unrealized Losses in AOCI	(109)	(91)
Fair Value	12,175	12,132
Government-guaranteed residential MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	2,806	2,831
Non-Credit OTTI Recognized in AOCI (Loss)	0	0
Gross Unrealized Gains in AOCI	163	130
Gross Unrealized Losses in AOCI	0	0
Fair Value	2,969	2,961
Private-label residential MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	84	90
Non-Credit OTTI Recognized in AOCI (Loss)	(21)	(26)
Gross Unrealized Gains in AOCI	0	0
Gross Unrealized Losses in AOCI	(1)	(1)
Fair Value	62	63
MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost Basis	14,406	14,486
Non-Credit OTTI Recognized in AOCI (Loss)	(21)	(26)
Gross Unrealized Gains in AOCI	931	788
Gross Unrealized Losses in AOCI	(110)	(92)
Fair Value	$ 15,206	$ 15,156

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Statements of Comprehensive Income (USD $) In Millions, unless otherwise specified	3 Months Ended				6 Months Ended
	Jun. 30, 2012		Jun. 30, 2011		Jun. 30, 2012		Jun. 30, 2011
Statement of Income and Comprehensive Income [Abstract]
Net income	$ 69		$ 41		$ 185		$ 67
Net unrealized gain (loss) on available-for-sale securities
Unrealized gains (losses)	244		234		212		157
Total net unrealized gain (loss) on available-for-sale securities	244		234		212		157
Net unrealized gain (loss) on held-to-maturity securities
Reclassification to net income	1	[1]	0	[1]	2	[1]	1	[1]
Total net unrealized gain (loss) on held-to-maturity securities	1	[1]	0	[1]	2	[1]	1	[1]
Non-credit OTTI on available-for-sale securities
Net change in fair value	0		2		5		5
Reclassification of net non-credit portion to (from) statements of income	0		1		0		6
Total non-credit OTTI on available-for-sale securities	0		3		5		11
Non-credit OTTI on held-to-maturity securities
Reclassification of non-credit portion to (from) statements of income	14		13		13		28
Accretion of non-credit portion to HTM asset	17		32		37		67
Total non-credit OTTI on held-to-maturity securities	31		45		50		95
Net unrealized gain (loss) on hedging activities
Unrealized gains (losses)	(110)		(128)		(58)		(53)
Reclassification of net realized (gains) losses to net income	0		(15)		(1)		(24)
Total net unrealized gain (loss) on hedging activities	(110)		(143)		(59)		(77)
Total other comprehensive income	166		139		210		187
Total comprehensive income	$ 235		$ 180		$ 395		$ 254

[1] This item relates to the amortization of fair value adjustments from a 2007 transfer at fair value of available-for-sale securities to held-to-maturity securities.

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Recently Issued but Not Yet Adopted Accounting Standards

6 Months Ended

Jun. 30, 2012

New Accounting Pronouncements and Changes in Accounting Principles [Abstract]

Recently Issued but Not Yet Adopted Accounting Standards [Text Block]

Recently Issued but Not Yet Adopted Accounting Standards

Asset Classification and Charge-offs

On April 9, 2012, the FHFA 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). The guidance establishes a standard and uniform methodology for classifying assets and prescribes the timing of asset charge-offs, excluding investment securities. 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. We are currently assessing the provisions of AB 2012-02 in coordination with the FHFA and therefore have not yet determined when we will implement the guidance, or its effect on our operating activities or financial statements.

Disclosures about Offsetting Assets and Liabilities

In December of 2011, the FASB issued new disclosure requirements pertaining to offsetting (netting) of assets and liabilities to increase the comparability between the statement of financial position prepared under U.S. GAAP and the statement of financial position prepared under IFRS. Currently, offsetting requirements represent a significant difference between amounts presented in the statement of financial position of entities that prepare their statement of financial position pursuant to U.S. GAAP versus entities that prepare their statement of financial position pursuant to IFRS. We would be required to disclose both gross information and net information about both instruments and transactions eligible for offset in our statement of condition and instruments and transactions subject to an agreement such as a master netting arrangement. Similar agreements include (1) derivative clearing agreements, (2) global master repurchase agreements, and (3) global master securities lending agreements. Similar financial instruments include (1) derivatives, (2) sale and repurchase agreements and reverse sale and repurchase agreements, and (3) securities borrowing and securities lending arrangements. Our policy is to only offset derivative instruments in our statements of condition. We do not have other financial instruments within the scope of the new guidance that are subject to an enforceable master netting arrangement or similar agreement. The new guidance takes effect for annual reporting periods beginning on or after January 1, 2013, and interim periods within those annual periods. The disclosure requirements would be applied retrospectively for all comparative periods presented.

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Allowance for Credit Losses (Impaired MPF Loans) (Details) (MPF Loans Held For Portfolio [Member], USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011	Dec. 31, 2011
MPF Loans Held For Portfolio [Member]
Financing Receivable, Impaired [Line Items]
Recorded Investment	$ 197		$ 197		$ 204
Unpaid Principal Balance	196		196		202
Related Allowance	30		30		26
Average Recorded Investment	199	135	201	127
Interest Income Recognized	$ 2	$ 2	$ 5	$ 3

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Fair Value Accounting (Valuation Techniques and Significant Inputs) (Details) (USD $) In Millions, unless otherwise specified	Jun. 30, 2012		Dec. 31, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	$ 52		$ 40
Real estate owned written down to fair value during the quarter	46		46
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS Private-label residential MBS - OTTI	62
HTM Private-label residential MBS - OTTI	1,731
Derivative Assets	36	[1]
Minimum [Member] | Third Party Pricing Service [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	36
Maximum [Member] | Third Party Pricing Service [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Assets	36
Consolidated Obligation Bonds [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Bonds	85	[2]
Consolidated Obligation Bonds [Member] | CO Curve [Member] | Non Callable [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Bonds	85
AFS Securities [Member] | Private-label residential MBS [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS Private-label residential MBS - OTTI	62
AFS Securities [Member] | Minimum [Member] | Third Party Pricing Service [Member] | Private-label residential MBS [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS Private-label residential MBS - OTTI	56
AFS Securities [Member] | Maximum [Member] | Third Party Pricing Service [Member] | Private-label residential MBS [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS Private-label residential MBS - OTTI	68
HTM Securities [Member] | Private-label residential MBS [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
HTM Private-label residential MBS - OTTI	2
HTM Securities [Member] | Minimum [Member] | Third Party Pricing Service [Member] | Private-label residential MBS [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
HTM Private-label residential MBS - OTTI	2
HTM Securities [Member] | Maximum [Member] | Third Party Pricing Service [Member] | Private-label residential MBS [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
HTM Private-label residential MBS - OTTI	2
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Impaired MPF Loans	184		193
Real estate owned written down to fair value during the quarter	$ 14		$ 16

[1] Our derivative assets are, in part, secured with cash collateral as described in Note 9 - Derivatives and Hedging Activities. We also provide cash collateral to our counterparties in order to secure our derivative liabilities. We do not reclassify the amount of cash collateral as Level 1, even though on a standalone basis it would be considered Level 1 within the fair value hierarchy. This is because we elected the portfolio exception for purposes of measuring the credit risk adjustment component of fair value for our derivative assets and liabilities. Specifically, we view our net derivative assets or liabilities as a single unit of account for purposes of classifying the total balance within the fair value hierarchy. Accordingly, from a single unit of account perspective, we classify our derivative assets and liabilities as either Level 2 or Level 3 within the fair value hierarchy.

[2] Amount represents debt carried at fair value under a fair value hedge strategy, not at fair value under the fair value option.

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Investment Securities (Tables)

6 Months Ended

Jun. 30, 2012

Investment Securities [Line Items]

Trading Securities by Major Security Type [Table Text Block]

The following table presents the fair value of our trading securities:

As of	June 30, 2012		December 31, 2011
U.S. Government & other government related	$	1,888	$	2,737
MBS:
GSE residential	155		195
Government-guaranteed residential	3		3
Total MBS	158		198
Total trading securities	$	2,046	$	2,935

Available-for-sale Securities by Major Security Type [Table Text Block]

Amortized Cost Basis and Fair Value – Available-for-Sale Securities (AFS)

	Amortized Cost Basis		Non-Credit  OTTI Recognized  in AOCI (Loss)			Gross Unrealized Gains in AOCI		Gross Unrealized Losses in AOCI			Fair Value
As of June 30, 2012
U.S. Government & other government related	$	760	$	—		$	62	$	(2	)	$	820
FFELP ABS	7,425		—			486		(41		)	7,870
MBS:
GSE residential	11,516		—			768		(109		)	12,175
Government-guaranteed residential	2,806		—			163		—			2,969
Private-label residential	84		(21		)	—		(1		)	62
Total MBS	14,406		(21		)	931		(110		)	15,206
Total	$	22,591	$	(21	)	$	1,479	$	(153	)	$	23,896
As of December 31, 2011
U.S. Government & other government related	$	947	$	—		$	56	$	(2	)	$	1,001
FFELP ABS	7,796		—			398		(35		)	8,159
MBS:
GSE residential	11,565		—			658		(91		)	12,132
Government-guaranteed residential	2,831		—			130		—			2,961
Private-label residential	90		(26		)	—		(1		)	63
Total MBS	14,486		(26		)	788		(92		)	15,156
Total	$	23,229	$	(26	)	$	1,242	$	(129	)	$	24,316

Held-to-maturity Securities by Major Security Type [Table Text Block]

Amortized Cost, Carrying Value, and Fair Value - Held-to-Maturity Securities (HTM)

	Amortized Cost Basis		Non-credit OTTI Recognized  in AOCI (Loss)			Carrying Value		Gross Unrecognized Holding  Gains		Gross Unrecognized Holding  Losses			Fair  Value
As of June 30, 2012
U.S. Government & other government related	$	2,594	$	—		$	2,594	$	126	$	—		$	2,720
State or local housing agency	26		—			26		—		—			26
MBS:
GSE residential	5,032		—			5,032		413		—			5,445
Government-guaranteed residential	1,373		—			1,373		41		—			1,414
Private-label residential	1,988		(416		)	1,572		177		(18		)	1,731
Total MBS	8,393		(416		)	7,977		631		(18		)	8,590
Total	$	11,013	$	(416	)	$	10,597	$	757	$	(18	)	$	11,336
As of December 31, 2011
U.S. Government & other government related	$	2,573	$	—		$	2,573	$	104	$	—		$	2,677
State or local housing agency	27		—			27		—		—			27
MBS:
GSE residential	5,761		—			5,761		423		—			6,184
Government-guaranteed residential	1,414		—			1,414		34		—			1,448
Private-label residential	2,168		(466		)	1,702		145		(52		)	1,795
Total MBS	9,343		(466		)	8,877		602		(52		)	9,427
Total	$	11,943	$	(466	)	$	11,477	$	706	$	(52	)	$	12,131

Securities by Contractual Maturity [Table Text Block]

The table below presents the amortized cost basis and fair value of AFS and HTM securities by contractual maturity, excluding ABS and MBS securities. These securities are excluded because their expected maturities may differ from their contractual maturities if borrowers of the underlying loans elect to prepay their loans.

	Available-for-Sale				Held-to-Maturity
As of June 30, 2012	Amortized Cost		Fair  Value		Amortized Cost		Fair  Value
Year of Maturity -
Due in one year or less	$	—	$	—	$	805	$	812
Due after one year through five years	—		—		65		66
Due after five years through ten years	253		272		515		532
Due after ten years	507		548		1,235		1,336
Total	$	760	$	820	$	2,620	$	2,746

Other

Recovery Ranges of Housing Price Change [Table Text Block]

The following table presents the projected home price recovery by future month.

As of June 30, 2012	Recovery Range Annualized %
Months	Low	High
1-6	0.0%	2.8%
7-18	0.0%	3.0%
19-24	1.0%	4.0%
25-30	2.0%	4.0%
31-42	2.0%	5.0%
43-66	2.0%	6.0%
Thereafter	2.3%	5.6%

Significant Inputs for OTTI [Table Text Block]

The table below presents the inputs we used to measure the amount of the credit loss recognized in earnings during the current period attributable to OTTI securities. The model used to estimate cash flows classifies the OTTI securities as either prime, Alt-A, or subprime based on an assessment as of the current period rather than the classification at the time of issuance.

			Prepayment Rates			Default Rates			Loss Severities			Credit Enhancement
			%	Range %		%	Range %		%	Range %		%	Range %
As of June 30, 2012	Unpaid Principal Balance		Weighted Average	Low	High	Weighted Average	Low	High	Weighted Average	Low	High	Weighted Average	Low	High
2006	$	588	7.0	6.0	8.0	35.0	30.0	43.0	41.0	37.0	47.0	1.0	—	7.0
2004 & prior	2		29.0	29.0	29.0	—	—	—	—	—	—	41.0	41.0	41.0
Total Prime	590		8.0	6.0	29.0	35.0	—	43.0	41.0	—	47.0	1.0	—	41.0
2006	23		5.0	5.0	5.0	41.0	41.0	41.0	57.0	57.0	57.0	5.0	5.0	5.0
Total Alt-A	23		5.0	5.0	5.0	41.0	41.0	41.0	57.0	57.0	57.0	5.0	5.0	5.0
Total	$	613	7.0	5.0	29.0	35.0	—	43.0	42.0	—	57.0	1.0	—	41.0

Total Securities Other-than-Temporarily Impaired during the Life of the Security [Table Text Block]

The following table presents the current outstanding balances on private-label MBS that were other-than-temporarily impaired at some point during the life of the securities. This table does not include HTM and AFS securities that are in an unrealized loss position, which have not had an OTTI charge during the life of the security.

As of June 30, 2012	Unpaid Principal Balance		Amortized Cost Basis		Carrying Value		Fair Value
Private-label residential MBS:
Alt-A	$	129	$	82	$	61	$	61
Total OTTI AFS securities	$	129	$	82	$	61	$	61
Private-label residential MBS:
Prime	$	1,471	$	1,141	$	848	$	1,003
Subprime	863		564		441		454
Total OTTI HTM securities	$	2,334	$	1,705	$	1,289	$	1,457

Credit Losses and Net Amount of Impairment Losses [Table Text Block]

We recognized OTTI as presented in the following table. Net non-credit portion reclassified (from) to AOCI represents the net amount of impairment losses recognized into earnings from AOCI or reclassified to AOCI from earnings.

	Total OTTI			Net Non-credit Portion (from) to AOCI			OTTI Credit Portion
Three months ended June 30, 2012
Prime	$	—		$	(14	)	$	(14	)
Alt-A	—			—			—
Subprime	—			—			—
Total OTTI	$	—		$	(14	)	$	(14	)
Three months ended June 30, 2011
Prime	$	—		$	(17	)	$	(17	)
Alt-A	—			(1		)	(1		)
Subprime	(9		)	4			(5		)
Total OTTI	$	(9	)	$	(14	)	$	(23	)
Six months ended June 30, 2012
Prime	$	—		$	(14	)	$	(14	)
Alt-A	—			—			—
Subprime	(2		)	1			(1		)
Total OTTI	$	(2	)	$	(13	)	$	(15	)
Six months ended June 30, 2011
Prime	$	—		$	(24	)	$	(24	)
Alt-A	—			(6		)	(6		)
Subprime	(9		)	(4		)	(13		)
Total OTTI	$	(9	)	$	(34	)	$	(43	)

Rollforward of the Amounts Related to Credit Losses Recognized into Earnings [Table Text Block]

The following table presents the changes in the cumulative amount of credit losses (recognized into earnings) on OTTI investment securities for the periods stated.

Three months ended June 30,	2012			2011
Beginning Balance	$	712		$	672
Additions:
Credit losses on securities for which OTTI was not previously recognized	—			—
Additional credit losses on securities for which an OTTI charge was previously recognized	14			23
Total OTTI credit losses recognized in the period	14			23
Reductions:
Securities sold, matured, paid down or prepaid over the period	—			(1		)
Increases in cash flows expected to be collected, recognized over the remaining life of the security	(2		)	—
Ending Balance	$	724		$	694
Six months ended June 30,
Beginning Balance	$	712		$	653
Additions:
Credit losses on securities for which OTTI was not previously recognized	—			—
Additional credit losses on securities for which an OTTI charge was previously recognized	15			43
Total OTTI credit losses recognized in the period	15			43
Reductions:
Securities sold, matured, paid down or prepaid over the period	—			—
Increases in cash flows expected to be collected, recognized over the remaining life of the security	(3		)	(2		)
Ending Balance	$	724		$	694

Categories of Investments, Marketable Securities, Available-for-sale Securities [Member]

Investment Securities [Line Items]

Securities in a Continuous Unrealized Loss Position [Table Text Block]

Available-for-Sale Securities

	Less than 12 Months					12 Months or More						Total
	Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses				Fair Value		Gross Unrealized Losses
As of June 30, 2012
U.S. Government & other government related	$	82	$	(2	)	$	—	$	—			$	82	$	(2	)
FFELP ABS	112		(1		)	1,141		(40		)		1,253		(41		)
MBS:
GSE residential	4,115		(109		)	—		—				4,115		(109		)
Private-label residential	—		—			62		(22		)	a	62		(22		)	a
Total MBS	4,115		(109		)	62		(22		)		4,177		(131		)
Total available-for-sale securities	$	4,309	$	(112	)	$	1,203	$	(62	)		$	5,512	$	(174	)
As of December 31, 2011
U.S. Government & other government related	$	98	$	(2	)	$	—	$	—			$	98	$	(2	)
FFELP ABS	223		(3		)	1,203		(32		)		1,426		(35		)
MBS:
GSE residential	4,073		(91		)	—		—				4,073		(91		)
Government-guaranteed residential	33		—			80		—				113		—
Private-label residential	—		—			63		(27		)	a	63		(27		)	a
Total MBS	4,106		(91		)	143		(27		)		4,249		(118		)
Total available-for-sale securities	$	4,427	$	(96	)	$	1,346	$	(59	)		$	5,773	$	(155	)

^a  Includes $33 million and $28 million of gross unrealized/unrecognized recoveries in fair value at June 30, 2012, and at December 31, 2011.

Categories of Investments, Marketable Securities, Held-to-maturity Securities [Member]

Investment Securities [Line Items]

Securities in a Continuous Unrealized Loss Position [Table Text Block]

Held-to-Maturity Securities

	Less than 12 Months				12 Months or More					Total
	Fair Value		Gross Unrealized Losses		Fair Value		Gross Unrealized Losses			Fair Value		Gross Unrealized Losses
As of June 30, 2012
U.S. Government & other government related	$	17	$	—	$	—	$	—		$	17	$	—
MBS:
GSE residential	—		—		37		—			37		—
Private-label residential	—		—		1,578		(434		)	1,578		(434		)
Total MBS	—		—		1,615		(434		)	1,615		(434		)
Total held-to-maturity securities	$	17	$	—	$	1,615	$	(434	)	$	1,632	$	(434	)
As of December 31, 2011
U.S. Government & other government related	$	7	$	—	$	—	$	—		$	7	$	—
MBS:
GSE residential	—		—		37		—			37		—
Private-label residential	—		—		1,653		(518		)	1,653		(518		)
Total MBS	—		—		1,690		(518		)	1,690		(518		)
Total held-to-maturity securities	$	7	$	—	$	1,690	$	(518	)	$	1,697	$	(518	)

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Fair Value Accounting (Fair Value Option) (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Fair Value, Option, Quantitative Disclosures [Roll Forward]
Net gain (loss) on instruments held at fair value	$ 2	$ (8)	$ 8	$ (13)
Advances [Member]
Fair Value, Option, Quantitative Disclosures [Roll Forward]
Balance beginning of period	9	6	9	4
New transactions elected for fair value option	0	3	0	5
Maturities and extinguishments	0	0	0	0
Net gain (loss) on instruments held at fair value	0	0	0	0
Change in accrued interest and other	0	0	0	0
Balance end of period	9	9	9	9
Consolidated Obligation Bonds [Member]
Fair Value, Option, Quantitative Disclosures [Roll Forward]
Balance beginning of period	(3,132)	(5,479)	(2,631)	(9,425)
New transactions elected for fair value option,	(6,565)	(3,300)	(8,890)	(4,159)
Maturities and extinguishments	2,680	4,705	4,500	9,519
Net gain (loss) on instruments held at fair value	2	(8)	6	(13)
Change in accrued interest and other	(2)	9	(2)	5
Balance end of period	(7,017)	(4,073)	(7,017)	(4,073)
Discount Notes [Member]
Fair Value, Option, Quantitative Disclosures [Roll Forward]
Balance beginning of period	(9,268)	(2,501)	(11,466)	(4,864)
New transactions elected for fair value option,	0	(150)	0	(150)
Maturities and extinguishments	5,136	1,450	7,336	3,816
Net gain (loss) on instruments held at fair value	0	0	2	0
Change in accrued interest and other	(3)	(1)	(7)	(4)
Balance end of period	$ (4,135)	$ (1,202)	$ (4,135)	$ (1,202)

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Interest Income and Interest Expense (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011	Jun. 30, 2012	Jun. 30, 2011
Interest income -
Federal Funds sold	$ 0	$ 0	$ 1	$ 2
Securities purchased under agreements to resell	1	1	2	4
Interest bearing deposits	1	0	1	0
Investment securities -
Trading	14	17	31	31
Available-for-sale	161	162	326	327
Held-to-maturity	110	130	224	265
Total investment securities	285	309	581	623
Advances	46	62	94	130
Advance prepayment fees, net of fair value hedge adjustments of $(2), $(7), $(24), and $(7)	9	5	35	5
Total Advances	55	67	129	135
MPF Loans held in portfolio	147	194	302	395
Less: Credit enhancement fees	(4)	(2)	(6)	(4)
MPF Loans held in portfolio, net	143	192	296	391
Total interest income	485	569	1,010	1,155
Interest expense -
Securities sold under agreements to repurchase	0	5	0	9
Consolidated obligations -
Discount notes	77	92	153	190
Bonds	255	328	531	673
Total consolidated obligations	332	420	684	863
Subordinated notes	15	14	29	28
Total interest expense	347	439	713	900
Net interest income before provision for credit losses	138	130	297	255
Provision for credit losses	2	3	8	9
Net interest income	$ 136	$ 127	$ 289	$ 246

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Capital Stock and Mandatorily Redeemable Capital Stock (MRCS)

6 Months Ended

Jun. 30, 2012

Capital [Abstract]

Capital Stock and Mandatorily Redeemable Capital Stock (MRCS) [Text Block]

Capital Stock and Mandatorily Redeemable Capital Stock (MRCS)

Capital Rules

For capital rules that were in effect prior to our conversion to our new Capital Plan on January 1, 2012, see Capital Rules prior to Conversion to New Capital Structure on page F-53 in our 2011 Form 10-K.

Under the new Capital Plan, which became effective January 1, 2012, our stock consists of two sub-classes of stock, Class B-1 stock and Class B-2 stock (together, Class B stock), both with a par value of $100 and redeemable on five years' written notice, subject to certain conditions.

Under the Capital Plan, each member is required to own capital stock in an amount equal to the greater of a membership stock requirement or an activity stock requirement, as further discussed in Capital Rules after Conversion to New Capital Structure on page F-53 in our 2011 Form 10-K. Membership stock requirements will continue to be recalculated annually, whereas the activity stock requirement will apply on a continuing basis.

We may only redeem or repurchase capital stock from a member if, following the redemption or repurchase, the member will continue to meet its minimum investment requirement and we remain in compliance with our regulatory capital requirements. As of April 18, 2012, we are no longer required to obtain FHFA approval for such redemptions and repurchases. However, the Board of Directors has adopted a resolution which may not be amended without FHFA consent governing our repurchases of excess stock. Pursuant to that resolution, we are required to continue making quarterly repurchases of excess capital stock from members on a pro rata basis, subject to satisfaction of certain conditions. For as long as we continue to make such quarterly repurchases, we anticipate that individual members' requests for repurchase of excess Class B-2 Stock will not be fulfilled. Upon request we will continue to repurchase excess Class B-1 Stock that is in excess of a member's capital stock “floor.” See Note 12 - Regulatory Actions.

During the three and six months ended June 30, 2012, we repurchased excess capital stock (including capital stock reclassified as MRCS) totaling $150 million and $650 million in accordance with our Repurchase Plan as discussed in Repurchase of Excess Capital Stock on page F-56 in our 2011 10-K. At June 30, 2012, we had remaining excess capital stock of $433 million compared to $1.1 billion at December 31, 2011.

Our Repurchase Plan terminated by its terms effective upon our most recent repurchase of excess capital stock on May 15, 2012. However, pursuant to the resolution adopted our Board of Directors as discussed in Note 12 - Regulatory Actions, we continue to repurchase excess capital stock held by members if we maintain compliance with financial and capital thresholds set forth in the Repurchase Plan as discussed in Repurchase of Excess Capital Stock on page F-56 in our 2011 Form 10-K. On July 16, 2012, following our assessment that we met the thresholds for repurchase based on the financial results for the second quarter of 2012, we notified members of another repurchase opportunity and the process for requesting repurchase. In accordance with that process, we announced that we would repurchase excess capital stock of $150 million on August 15, 2012.

Capital Concentration

As of June 30, 2012, BMO Harris Bank N. A. had $254 million, or 14%, of our total capital stock outstanding. No other members had capital stock exceeding 10%.

Minimum Capital Requirements

After we implemented our new Capital Plan on January 1, 2012, we are required by regulation to maintain:

• permanent capital equal to the sum of our (i) credit risk capital requirement, (ii) market risk capital requirement, and (iii) operations risk capital requirement, all of which are calculated in accordance with rules and regulations of the FHFA. Permanent capital includes our retained earnings plus the amount paid in for our Class B stock, including Class B stock classified as mandatorily redeemable; and

• a minimum ratio of total regulatory capital (which includes permanent capital plus any general allowance for losses) to total assets of 4.0%; and

• a minimum ratio of leverage capital (which includes permanent capital multiplied by 1.5 plus any general allowance for losses) to total assets of 5.0%.

Total regulatory capital and permanent capital do not include accumulated other comprehensive income (loss). For further discussion of these minimum capital requirements, see Minimum Capital Requirements after Conversion to New Capital Structure on page F-54 of our 2011 Form 10-K.

The following table details our minimum capital requirements at June 30, 2012, under our new Capital Plan:

	June 30, 2012
	Required			Actual
Risk-based capital	$	1,501		$	3,364
Capital-to-assets ratio (regulatory)	4.00		%	4.90		%
Regulatory capital	$	2,746		$	3,364
Leverage capital-to-assets ratio (regulatory)	5.00		%	7.35		%
Leverage capital	$	3,432		$	5,046

Detailed components of our Risk-Based Capital were as follows:

	June 30, 2012
Credit risk	$	1,126
Market risk	29
Operations risk	346
Total risk-based capital requirement	$	1,501
Actual permanent capital	$	3,364

In addition, under the FHFA regulation on capital classifications and critical capital levels for the FHLBs, we are adequately capitalized.

At December 31, 2011, prior to conversion to our new Capital Plan, we were subject to a minimum regulatory leverage limit as further discussed in Minimum Capital Requirements prior to Conversion to New Capital Structure on page F-54 in our 2011 Form 10-K. The following table summarizes our regulatory capital requirements as a percentage of total assets at December 31, 2011, before the conversion to our new Capital Plan.

		Regulatory Capital plus Designated Amount of Subordinated Notes
		Requirement in Effect		Actual
	Non-Mortgage Assets	Ratio	Amount	Ratio	Amount
December 31, 2011	19.19%	4.76%	$3,392	6.35%	$4,527

Mandatorily Redeemable Capital Stock

We reclassify capital stock from equity to mandatorily redeemable capital stock (MRCS)under conditions as further described in Mandatorily Redeemable Capital Stock on page F-55 in our 2011 Form 10-K. As of April 18, 2012, we are no longer required to obtain FHFA approval for such redemptions and repurchases, as further discussed in Note 12 - Regulatory Actions.

The following table shows a reconciliation of the dollar amounts in MRCS, along with the number of current and former members owning the related capital stock at period end:

June 30, 2012	Dollar Amount
MRCS at beginning of year	$	4
Capital stock reclassified to MRCS	32
Redemption of MRCS	(26		)
MRCS at end of period a	$	10
Number of stockholders holding MRCS at period end	10

^a  All MRCS outstanding at the end of the period are redeemable in five years.