Federal Home Loan Bank of Indianapolis 10-Q 7 Aug 15 2015 Q2 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	6 Months Ended
	Jun. 30, 2015	Jul. 31, 2015
Entity Information [Line Items]
Entity Registrant Name	Federal Home Loan Bank of Indianapolis
Entity Central Index Key	1,331,754
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Document Type	10-Q
Document Period End Date	Jun. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q2
Amendment Flag	false
Entity Common Stock, Common B Shares Outstanding		14,129,950

Statements of Condition (Unaudi

Statements of Condition (Unaudited) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Assets:
Cash and due from banks		$ 635,017	$ 3,550,939
Interest-bearing deposits		251	483
Securities purchased under agreements to resell		200,000	0
Federal funds sold		1,895,000	0
AFS securities		3,570,926	3,556,165
Held-to-maturity securities (estimated fair values of $6,590,575 and $7,098,616, respectively) (Notes 4 and 5)	[1]	6,481,002	6,982,115
Advances (Note 6)		24,318,357	20,789,667
Mortgage loans held for portfolio, net of allowance for loan losses of $(1,350) and $(2,500), respectively (Notes 7 and 8)		7,932,724	6,820,262
Accrued interest receivable		86,971	82,866
Premises, software, and equipment, net		37,970	38,418
Derivative assets, net (Note 9)		41,763	25,487
Other assets		36,536	6,630
Total assets		45,236,517	41,853,032
Liabilities:
Deposits		1,163,762	1,084,042
Consolidated obligations (Note 10):
Discount notes		11,802,629	12,567,696
Bonds		29,647,600	25,503,138
Total consolidated obligations		41,450,229	38,070,834
Accrued interest payable		83,461	77,034
Affordable Housing Program payable (Note 11)		35,120	36,899
Derivative liabilities, net (Note 9)		95,634	103,253
Mandatorily redeemable capital stock (Note 12)		14,341	15,673
Other liabilities		152,962	90,027
Total liabilities		$ 42,995,509	$ 39,477,762
Commitments and contingencies (Note 16)
Capital stock putable (at par value of $100 per share):
Total capital stock putable		$ 1,388,239	$ 1,550,981
Retained earnings:
Unrestricted		691,512	672,159
Restricted		118,409	105,470
Total retained earnings		809,921	777,629
Total accumulated other comprehensive income (Note 13)		42,848	46,660
Total capital		2,241,008	2,375,270
Total liabilities and capital		45,236,517	41,853,032
Class B-1 issued and outstanding shares: 13,882,023 and 15,509,811, respectively [Member]
Capital stock putable (at par value of $100 per share):
Total capital stock putable		1,388,202	1,550,981
Class B-2 issued and outstanding shares: 371 and 0, respectively [Member]
Capital stock putable (at par value of $100 per share):
Total capital stock putable		$ 37	$ 0
[1]	Represents amortized cost after adjustment for non-credit OTTI recognized in AOCI.

Statements of Condition (Unaud3

Statements of Condition (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Common stock putable, par value per share (usd per share)	$ 100	$ 100
Held-to-Maturity Securities - Estimated Fair Values	$ 6,590,575	$ 7,098,616
Allowance for loan losses	$ (1,350)	$ (2,500)
Class B-1 [Member]
Common stock issued (in shares)	13,882,023	15,509,811
Common stock outstanding (in shares)	13,882,023	15,509,811
Class B-2 [Member]
Common stock issued (in shares)	371	0
Common stock outstanding (in shares)	371	0

Statements of Income (Unaudited

Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Income Statement [Abstract]
Document Period End Date			Jun. 30, 2015
Interest Income:
Advances	$ 29,951	$ 24,443	$ 57,679	$ 52,559
Prepayment fees on advances, net	101	12	292	1,061
Interest-bearing deposits	53	60	107	114
Securities purchased under agreements to resell	352	68	467	157
Federal funds sold	545	416	1,164	696
Available-for-sale securities	8,014	6,865	14,826	13,011
Held-to-maturity securities	29,346	31,313	58,747	63,423
Mortgage loans held for portfolio	64,174	57,511	126,400	115,616
Other interest income, net	(108)	421	45	535
Total interest income	132,428	121,109	259,727	247,172
Interest Expense:
Consolidated obligation discount notes	3,457	1,347	6,473	2,749
Consolidated obligation bonds	81,528	75,910	156,919	152,352
Deposits	23	22	42	45
Mandatorily redeemable capital stock	122	135	256	745
Total interest expense	85,130	77,414	163,690	155,891
Net interest income	47,298	43,695	96,037	91,281
Provision for (reversal of) credit losses	(951)	(86)	(388)	(790)
Net interest income after provision for credit losses	48,249	43,781	96,425	92,071
Other Income (Loss):
Total other-than-temporary impairment losses	0	0	0	0
Non-credit portion reclassified to (from) other comprehensive income, net	(32)	(58)	(32)	(228)
Net other-than-temporary impairment losses, credit portion	(32)	(58)	(32)	(228)
Net gains (losses) on derivatives and hedging activities	7,263	3,138	5,383	6,106
Service fees	200	227	388	442
Standby letters of credit fees	188	134	339	293
Other, net (Note 16)	322	6,521	5,439	9,234
Total other income	7,941	9,962	11,517	15,847
Other Expenses:
Compensation and benefits	10,998	10,567	21,698	20,514
Other operating expenses	5,541	4,452	10,633	8,496
Federal Housing Finance Agency	590	619	1,310	1,418
Office of Finance	787	625	1,650	1,443
Other	388	345	740	636
Total other expenses	18,304	16,608	36,031	32,507
Income before assessments	37,886	37,135	71,911	75,411
Affordable Housing Program assessments	3,801	3,727	7,217	7,616
Net Income	$ 34,085	$ 33,408	$ 64,694	$ 67,795

Statements of Comprehensive Inc

Statements of Comprehensive Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Statement of Comprehensive Income [Abstract]
Net income	$ 34,085	$ 33,408	$ 64,694	$ 67,795
Other Comprehensive Income (Loss):
Net change in unrealized gains (losses) on available-for-sale securities	(2,908)	538	(1,404)	12,577
Non-credit portion of other-than-temporary impairment losses on available-for-sale securities:
Reclassification of non-credit portion to other income (loss)	32	58	32	228
Net change in fair value not in excess of cumulative non-credit losses	(107)	38	(106)	(181)
Unrealized gains (losses)	828	8,619	(1,531)	12,873
Net non-credit portion of other-than-temporary impairment losses on available-for-sale securities	753	8,715	(1,605)	12,920
Non-credit portion of other-than-temporary impairment losses on held-to-maturity securities:
Accretion of non-credit portion	12	19	24	32
Net non-credit portion of other-than-temporary impairment losses on held-to-maturity securities	12	19	24	32
Pension benefits, net	(1,075)	(208)	(827)	(72)
Total other comprehensive income (loss)	(3,218)	9,064	(3,812)	25,457
Total comprehensive income	$ 30,867	$ 42,472	$ 60,882	$ 93,252

Statements of Capital (Unaudite

Statements of Capital (Unaudited) - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			$ 2,375,270	$ 2,361,426
Total comprehensive income	$ 30,867	$ 42,472	60,882	93,252
Proceeds from sale of capital stock			77,593	56,724
Repurchase/redemption of capital stock			(240,335)
Cash dividends on capital stock (4.63% and 4.00% in 2015 and 2014 respectively, annualized)			(32,402)	(37,084)
Ending Balance	$ 2,241,008	$ 2,474,318	$ 2,241,008	$ 2,474,318
Capital Stock Class B Putable [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance, Shares			15,510	16,099
Beginning Balance			$ 1,550,981	$ 1,609,931
Proceeds from sale of capital stock, shares			775	568
Proceeds from sale of capital stock			$ 77,593	$ 56,724
Repurchase/redemption of capital stock (shares)			(2,403)
Repurchase/redemption of capital stock			$ (240,335)
Ending Balance, Shares	13,882	16,667	13,882	16,667
Ending Balance	$ 1,388,239	$ 1,666,655	$ 1,388,239	$ 1,666,655
Retained Earnings Total [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			777,629	729,775
Total comprehensive income			64,694	67,795
Cash dividends on capital stock (4.63% and 4.00% in 2015 and 2014 respectively, annualized)			(32,402)	(37,084)
Ending Balance	809,921	760,486	809,921	760,486
Retained Earnings, Unrestricted [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			672,159	647,624
Total comprehensive income			51,755	54,236
Cash dividends on capital stock (4.63% and 4.00% in 2015 and 2014 respectively, annualized)			(32,402)	(37,084)
Ending Balance	691,512	664,776	691,512	664,776
Retained Earnings, Restricted [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			105,470	82,151
Total comprehensive income			12,939	13,559
Cash dividends on capital stock (4.63% and 4.00% in 2015 and 2014 respectively, annualized)			0	0
Ending Balance	118,409	95,710	118,409	95,710
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning Balance			46,660	21,720
Total comprehensive income			(3,812)	25,457
Ending Balance	$ 42,848	$ 47,177	$ 42,848	$ 47,177

Statements of Capital (Unaudit7

Statements of Capital (Unaudited) (Parenthetical)	6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014
Statement of Stockholders' Equity [Abstract]
Annualized Dividend Rate on Capital Stock	4.00%	4.63%

Statements of Cash Flows (Unaud

Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014
Operating Activities:
Net income		$ 64,694	$ 67,795
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization and depreciation		27,464	13,106
Prepayment fees on advances, net of related swap termination fees		(1,862)	0
Changes in net derivative and hedging activities		24,463	26,822
Net other-than-temporary impairment losses, credit portion		32	228
Provision for (reversal of) credit losses		(388)	(790)
Changes in:
Accrued interest receivable		(4,237)	1,624
Other assets		(139)	9,121
Accrued interest payable		6,428	(2,616)
Other liabilities		18,687	7,083
Total adjustments, net		70,448	54,578
Net cash provided by operating activities		135,142	122,373
Changes in:
Interest-bearing deposits		36,505	59,164
Securities purchased under agreements to resell		(200,000)	0
Federal funds sold		(1,895,000)	(230,000)
Purchases of premises, software, and equipment		(2,190)	(2,019)
Available-for-sale securities:
Proceeds from maturities		38,055	40,539
Purchases		(79,866)	0
Held-to-maturity securities:
Proceeds from maturities		810,146	379,421
Purchases		(316,868)	(174,142)
Advances:
Principal collected		38,155,389	33,858,469
Disbursed to members		(41,710,652)	(35,765,339)
Mortgage loans held for portfolio:
Principal collected		714,805	406,321
Purchases from members		(1,827,183)	(472,545)
Net cash used in investing activities		(6,276,859)	(1,900,131)
Financing Activities:
Changes in deposits		79,680	(108,354)
Net payments on derivative contracts with financing elements		(29,874)	(30,349)
Net proceeds from issuance of consolidated obligations:
Discount notes		33,034,814	24,336,904
Bonds		12,243,592	8,605,005
Payments for matured and retired consolidated obligations:
Discount notes		(33,801,641)	(22,769,510)
Bonds		(8,104,300)	(8,993,200)
Other Federal Home Loan Banks:
Proceeds from borrowings		0	22,000
Principal payments		0	(22,000)
Proceeds from sale of capital stock		77,593	56,724
Payments for redemption/repurchase of mandatorily redeemable capital stock		(1,332)	(2)
Payments for redemption/repurchase of capital stock		(240,335)	0
Cash dividends paid on capital stock		(32,402)	(37,084)
Net cash provided by financing activities		3,225,795	1,060,134
Net increase (decrease) in cash and due from banks		(2,915,922)	(717,624)
Cash and due from banks at beginning of period		3,550,939	3,318,564
Cash and due from banks at end of period		635,017	2,600,940
Supplemental Disclosures:
Interest paid		149,504	153,880
Affordable Housing Program payments	[1]	8,996	6,932
Capitalized interest on certain held-to-maturity securities		836	1,303
Net transfers of mortgage loans to real estate owned		$ 0	$ 117
[1]	Subsidies disbursed are reported net of returns/recaptures of previously disbursed subsidies.

Summary of Significant Accounti

Summary of Significant Accounting Policies	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Note 1 - Summary of Significant Accounting Policies and Change in Accounting Principle Basis of Presentation. The accompanying interim financial statements of the Federal Home Loan Bank of Indianapolis have been prepared in accordance with GAAP and SEC requirements for interim financial information. Accordingly, they do not include all of the information and disclosures required by GAAP for complete financial statements. The interim financial statements presented herein should be read in conjunction with our audited financial statements and notes thereto, which are included in our 2014 Form 10-K. The financial statements contain all adjustments that are, in the opinion of management, necessary for a fair statement of our financial position, results of operations and cash flows for the interim periods presented. All such adjustments were of a normal recurring nature. The results of operations for the periods presented are not necessarily indicative of the results to be expected for the full fiscal year or any other interim period. Our significant accounting policies and certain other disclosures are set forth in Note 1 - Summary of Significant Accounting Policies in our 2014 Form 10-K. There have been no significant changes to these policies through June 30, 2015 . We use certain acronyms and terms throughout these financial statements, which are defined in the Glossary of Terms . Unless the context otherwise requires, the terms "we," "us," and "our" refer to the Federal Home Loan Bank of Indianapolis or its management. Reclassifications. We have reclassified certain amounts from the prior periods to conform to the current period presentation. These reclassifications had no effect on net income, total comprehensive income, total capital, or net cash flows. Use of Estimates. When preparing financial statements in accordance with GAAP, we are required to make subjective assumptions and estimates that may affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported amounts of income and expense. The most significant estimates include the determination of other-than-temporary impairment of certain private-label RMBS, the fair values of derivatives and other financial instruments, and the allowance for credit losses. Although the reported amounts and disclosures reflect our best estimates, actual results could differ significantly from these estimates. Change in Accounting Principle. Effective October 1, 2014, we changed our method of accounting for the amortization and accretion of premiums and discounts, deferred loan fees or costs, and hedging basis adjustments on our mortgage loans held for portfolio to the contractual interest method. The contractual method recognizes the income effects of premiums and discounts in a manner that reflects the actual prepayments and other activity of the mortgage loans during that period and the contractual terms of the loans without regard to estimated prepayments based upon assumptions about future borrower activity. Historically, we deferred and amortized premiums and accreted discounts into interest income using the retrospective interest method, which used both actual prepayment experience and estimates of future principal repayments in calculating the estimated lives of the loans. While both the retrospective interest and contractual interest methods are acceptable under GAAP, the contractual interest method has become preferable for recognizing net unamortized premiums on our mortgage loans held for portfolio because (i) it reduces our reliance on subjective assumptions and estimates that affect the reported amounts of assets, capital and income in the financial statements and (ii) it represents the base accounting model articulated in GAAP applicable to accounting for the amortization of premiums and the accretion of discounts, whereas the retrospective method is only permitted by the guidance in narrowly defined circumstances. The change to the contractual method for amortizing premiums and accreting discounts, deferred loan fees or costs, and hedging basis adjustments on our mortgage loans held for portfolio has been reported through retroactive application of the change in accounting principle to all periods presented. For the three and six months ended June 30, 2014 , the effect of this change was an increase to net income of $267 and $994 , respectively. The following table illustrates the impact of the change in amortization and accretion methodology on our previously reported financial statements as of and for the three and six months ended June 30, 2014. For the Three Months Ended June 30, 2014 Previous Method New Method Effect of Change Statements of Income: Interest income - mortgage loans held for portfolio $ 57,214 $ 57,511 $ 297 Net interest income after provision for credit losses 43,484 43,781 297 Income before assessments 36,838 37,135 297 Affordable Housing Program assessments 3,697 3,727 30 Net income $ 33,141 $ 33,408 $ 267 Statements of Comprehensive Income: Net income $ 33,141 $ 33,408 $ 267 Total comprehensive income $ 42,205 $ 42,472 $ 267 As of and for the Six Months Ended June 30, 2014 Previous Method New Method Effect of Change Statements of Condition: Mortgage loans held for portfolio, net $ 6,251,472 $ 6,230,400 $ (21,072 ) Total assets 39,055,075 39,034,003 (21,072 ) Affordable Housing Program payable 43,351 43,462 111 Total liabilities 36,559,574 36,559,685 111 Unrestricted retained earnings 682,872 664,776 (18,096 ) Restricted retained earnings 98,797 95,710 (3,087 ) Total retained earnings 781,669 760,486 (21,183 ) Total capital 2,495,501 2,474,318 (21,183 ) Total liabilities and capital $ 39,055,075 $ 39,034,003 $ (21,072 ) Statements of Income: Interest income - mortgage loans held for portfolio $ 114,511 $ 115,616 $ 1,105 Net interest income after provision for credit losses 90,966 92,071 1,105 Income before assessments 74,306 75,411 1,105 Affordable Housing Program assessments 7,505 7,616 111 Net income $ 66,801 $ 67,795 $ 994 Statements of Comprehensive Income: Net income $ 66,801 $ 67,795 $ 994 Total comprehensive income $ 92,258 $ 93,252 $ 994 Statements of Capital: Total retained earnings, as of beginning of year $ 751,952 $ 729,775 $ (22,177 ) Total comprehensive income 92,258 93,252 994 Total retained earnings, as of end of period 781,669 760,486 (21,183 ) Total capital $ 2,495,501 $ 2,474,318 $ (21,183 ) Statements of Cash Flows: Operating activities: Net income $ 66,801 $ 67,795 $ 994 Adjustments to reconcile net income to net cash provided by operating activities: Amortization and depreciation 14,211 13,106 (1,105 ) Changes in: Other liabilities 6,972 7,083 111 Total adjustments, net 55,572 54,578 (994 ) Net cash provided by operating activities $ 122,373 $ 122,373 $ —

Recently Adopted and Issued Acc

Recently Adopted and Issued Accounting Guidance	6 Months Ended
	Jun. 30, 2015
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Adopted and Issued Accounting Guidance	Note 2 - Recently Adopted and Issued Accounting Guidance Customer's Accounting for Fees Paid in a Cloud Computing Arrangement. On April 15, 2015, the FASB issued amendments to clarify a customer's accounting for fees paid in a cloud computing arrangement. The amendments provide guidance to customers on determining whether a cloud computing arrangement includes a software license that should be accounted for as internal-use software. If the arrangement does not contain a software license, it would be accounted for as a service contract. This guidance becomes effective for the interim and annual periods beginning after December 15, 2015, and early adoption is permitted. We can elect to adopt the amendments either (i) prospectively to all arrangements entered into or materially modified after the effective date or (ii) retrospectively. We are in the process of evaluating this guidance, but its effect on our financial condition, results of operations, and cash flows is not expected to be material. Simplifying the Presentation of Debt Issuance Costs. On April 7, 2015, the FASB issued guidance to simplify the presentation of debt issuance costs. This guidance requires a reclassification on the statement of condition of debt issuance costs related to a recognized debt liability from other assets to a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. This guidance becomes effective for the interim and annual periods beginning after December 15, 2015, and early adoption is permitted for financial statements that have not been previously issued. The guidance is required to be applied on a retrospective basis to each individual period presented on the statement of condition. Amendments to the Consolidation Analysis. On February 18, 2015, the FASB issued amended guidance intended to enhance consolidation analysis for legal entities such as limited partnerships, limited liability companies, and securitization structures (collateralized debt obligations, collateralized loan obligations, and MBS transactions). The new guidance primarily focuses on: (i) placing more emphasis on risk of loss when determining a controlling financial interest, such that a reporting organization may no longer have to consolidate a legal entity in certain circumstances based solely on its fee arrangement when certain criteria are met; (ii) reducing the frequency of the application of related-party guidance when determining a controlling financial interest in a VIE; and (iii) changing consolidation conclusions for entities in several industries that typically make use of limited partnerships or VIEs. This guidance becomes effective for the interim and annual periods beginning after December 15, 2015, and early adoption is permitted, including adoption in an interim period. We are in the process of evaluating this guidance, but its effect on our financial condition, results of operations, or cash flows is not expected to be material.

Available-for-Sale Securities

Available-for-Sale Securities	6 Months Ended
	Jun. 30, 2015
Available-for-sale Securities [Abstract]
Available-for-sale Securities	Note 3 - Available-for-Sale Securities Major Security Types. The following table presents information on our AFS securities by type of security. Gross Gross Amortized Non-Credit Unrealized Unrealized Estimated June 30, 2015 Cost (1) OTTI Gains Losses Fair Value GSE and TVA debentures $ 3,113,797 $ — $ 14,695 $ (739 ) $ 3,127,753 GSE MBS 77,736 — 718 — 78,454 Private-label RMBS 328,152 (201 ) 36,768 — 364,719 Total AFS securities $ 3,519,685 $ (201 ) $ 52,181 $ (739 ) $ 3,570,926 December 31, 2014 GSE and TVA debentures $ 3,139,037 $ — $ 17,430 $ (1,352 ) $ 3,155,115 Private-label RMBS 362,878 (127 ) 38,299 — 401,050 Total AFS securities $ 3,501,915 $ (127 ) $ 55,729 $ (1,352 ) $ 3,556,165 (1) Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses) and fair-value hedge accounting adjustments. Unrealized Loss Positions. The following table presents impaired AFS securities (i.e., in an unrealized loss position), aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. None of our GSE MBS were in an unrealized loss position at June 30, 2015 . Less than 12 months 12 months or more Total Estimated Unrealized Estimated Unrealized Estimated Unrealized June 30, 2015 Fair Value Losses Fair Value Losses Fair Value Losses GSE and TVA debentures $ 266,017 $ (739 ) $ — $ — $ 266,017 $ (739 ) Private-label RMBS — — 4,995 (201 ) 4,995 (201 ) Total impaired AFS securities $ 266,017 $ (739 ) $ 4,995 $ (201 ) $ 271,012 $ (940 ) December 31, 2014 GSE and TVA debentures $ 264,959 $ (1,352 ) $ — $ — $ 264,959 $ (1,352 ) Private-label RMBS — — 5,656 (127 ) 5,656 (127 ) Total impaired AFS securities $ 264,959 $ (1,352 ) $ 5,656 $ (127 ) $ 270,615 $ (1,479 ) Contractual Maturity. The amortized cost and estimated fair value of non-MBS AFS securities by contractual maturity are presented below. MBS are not presented by contractual maturity because their actual maturities will likely differ from contractual maturities as borrowers have the right to prepay their obligations with or without prepayment fees. June 30, 2015 December 31, 2014 Amortized Estimated Amortized Estimated Year of Contractual Maturity Cost Fair Value Cost Fair Value Due in one year or less $ 207,315 $ 207,905 $ — $ — Due after one year through five years 2,252,418 2,262,091 2,484,379 2,497,034 Due after five years through ten years 654,064 657,757 654,658 658,081 Total non-MBS 3,113,797 3,127,753 3,139,037 3,155,115 Total MBS 405,888 443,173 362,878 401,050 Total AFS securities $ 3,519,685 $ 3,570,926 $ 3,501,915 $ 3,556,165 Realized Gains and Losses. There were no sales of AFS securities during the three and six months ended June 30, 2015 or 2014 . As of June 30, 2015 , we had no intention of selling the AFS securities in an unrealized loss position nor did we consider it more likely than not that we will be required to sell these securities before our anticipated recovery of each security's remaining amortized cost basis.

Held-to-Maturity Securities

Held-to-Maturity Securities	6 Months Ended
	Jun. 30, 2015
Held-to-maturity Securities [Abstract]
Held-to-Maturity Securities	Note 4 - Held-to-Maturity Securities Major Security Types. The following table presents information on our HTM securities by type of security. Gross Gross Unrecognized Unrecognized Amortized Non-Credit Carrying Holding Holding Estimated June 30, 2015 Cost (1) OTTI Value Gains Losses Fair Value GSE debentures $ 100,000 $ — $ 100,000 $ 111 $ — $ 100,111 MBS and ABS: Other U.S. obligations -guaranteed MBS 2,986,326 — 2,986,326 30,870 (2,097 ) 3,015,099 GSE MBS 3,296,309 — 3,296,309 82,921 (713 ) 3,378,517 Private-label RMBS 86,549 — 86,549 418 (957 ) 86,010 Manufactured housing loan ABS 10,394 — 10,394 — (1,010 ) 9,384 Home equity loan ABS 1,575 (151 ) 1,424 76 (46 ) 1,454 Total MBS and ABS 6,381,153 (151 ) 6,381,002 114,285 (4,823 ) 6,490,464 Total HTM securities $ 6,481,153 $ (151 ) $ 6,481,002 $ 114,396 $ (4,823 ) $ 6,590,575 December 31, 2014 GSE debentures $ 269,000 $ — $ 269,000 $ 199 $ — $ 269,199 MBS and ABS: Other U.S. obligations -guaranteed MBS 3,032,494 — 3,032,494 30,598 (5,959 ) 3,057,133 GSE MBS 3,567,958 — 3,567,958 93,583 (104 ) 3,661,437 Private-label RMBS 99,879 — 99,879 360 (1,049 ) 99,190 Manufactured housing loan ABS 11,243 — 11,243 — (1,164 ) 10,079 Home equity loan ABS 1,716 (175 ) 1,541 114 (77 ) 1,578 Total MBS and ABS 6,713,290 (175 ) 6,713,115 124,655 (8,353 ) 6,829,417 Total HTM securities $ 6,982,290 $ (175 ) $ 6,982,115 $ 124,854 $ (8,353 ) $ 7,098,616 (1) Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses). Unrealized Loss Positions. The following table presents impaired HTM securities (i.e., in an unrealized loss position), aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. None of our non-MBS were in an unrealized loss position at June 30, 2015 or December 31, 2014 . Less than 12 months 12 months or more Total Estimated Unrealized Estimated Unrealized Estimated Unrealized June 30, 2015 Fair Value Losses Fair Value Losses Fair Value Losses (1) MBS and ABS: Other U.S. obligations - guaranteed MBS $ 71,333 $ (69 ) $ 642,368 $ (2,028 ) $ 713,701 $ (2,097 ) GSE MBS 549,432 (713 ) — — 549,432 (713 ) Private-label RMBS 8,632 (30 ) 37,448 (927 ) 46,080 (957 ) Manufactured housing loan ABS — — 9,384 (1,010 ) 9,384 (1,010 ) Home equity loan ABS — — 1,454 (121 ) 1,454 (121 ) Total MBS and ABS 629,397 (812 ) 690,654 (4,086 ) 1,320,051 (4,898 ) Total impaired HTM securities $ 629,397 $ (812 ) $ 690,654 $ (4,086 ) $ 1,320,051 $ (4,898 ) December 31, 2014 MBS and ABS: Other U.S. obligations - guaranteed MBS $ 528,242 $ (1,254 ) $ 702,768 $ (4,705 ) $ 1,231,010 $ (5,959 ) GSE MBS 31,554 (8 ) 26,013 (96 ) 57,567 (104 ) Private-label RMBS 3,274 (3 ) 41,050 (1,046 ) 44,324 (1,049 ) Manufactured housing loan ABS — — 10,080 (1,164 ) 10,080 (1,164 ) Home equity loan ABS — — 1,579 (138 ) 1,579 (138 ) Total MBS and ABS 563,070 (1,265 ) 781,490 (7,149 ) 1,344,560 (8,414 ) Total impaired HTM securities $ 563,070 $ (1,265 ) $ 781,490 $ (7,149 ) $ 1,344,560 $ (8,414 ) (1) For home equity loan ABS, total unrealized losses does not agree to total gross unrecognized holding losses at June 30, 2015 and December 31, 2014 of $(46) and $(77) , respectively. Total unrealized losses include non-credit-related OTTI losses recorded in AOCI of $(151) and $(175) , respectively, and gross unrecognized holding gains on previously OTTI securities of $76 and $114 , respectively. Contractual Maturity. The amortized cost, carrying value and estimated fair value of non-MBS HTM securities by contractual maturity are presented below. MBS and ABS are not presented by contractual maturity because their actual maturities will likely differ from contractual maturities as certain borrowers have the right to prepay their obligations with or without prepayment fees. June 30, 2015 December 31, 2014 Amortized Carrying Estimated Amortized Carrying Estimated Year of Contractual Maturity Cost (1) Value (2) Fair Value Cost (1) Value (2) Fair Value Non-MBS: Due in one year or less $ 100,000 $ 100,000 $ 100,111 $ 169,000 $ 169,000 $ 169,099 Due after one year through five years — — — 100,000 100,000 100,100 Total non-MBS 100,000 100,000 100,111 269,000 269,000 269,199 Total MBS and ABS 6,381,153 6,381,002 6,490,464 6,713,290 6,713,115 6,829,417 Total HTM securities $ 6,481,153 $ 6,481,002 $ 6,590,575 $ 6,982,290 $ 6,982,115 $ 7,098,616 (1) Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses). (2) Represents amortized cost after adjustment for non-credit OTTI recognized in AOCI.

Other-Than-Temporary Impairment

Other-Than-Temporary Impairment	6 Months Ended
	Jun. 30, 2015
Other Than Temporary Impairments Analysis [Abstract]
Other-Than-Temporary-Impairment	Note 5 - Other-Than-Temporary Impairment OTTI Evaluation Process and Results - Private-label RMBS and ABS. On a quarterly basis, we evaluate our individual AFS and HTM securities that have been previously OTTI or are in an unrealized loss position for OTTI. As part of our evaluation, we consider whether we intend to sell each security and whether it is more likely than not that we will be required to sell the security before its anticipated recovery. If either of these conditions is met, we recognize an OTTI loss equal to the entire difference between the security's amortized cost basis and its estimated fair value at the statement of condition date. For those securities that meet neither of these conditions, we perform a cash flow analysis to determine whether we expect to recover the entire amortized cost basis of the security as described in Note 1 - Summary of Significant Accounting Policies and Note 6 - Other-Than-Temporary Impairment in our 2014 Form 10-K. OTTI - Significant Inputs. The FHLBanks' OTTI Governance Committee developed a short-term housing price forecast with projected changes ranging from a decrease of 2% to an increase of 8% over a twelve-month period. For the vast majority of housing markets, the changes range from an increase of 2% to an increase of 5% . Thereafter, a unique path is projected for each geographic area based on an internally developed framework derived from historical data. The following table presents the significant modeling assumptions used to determine the amount of credit loss recognized in earnings for the three months ended June 30, 2015 on the security for which an OTTI was determined to have occurred, as well as related current credit enhancement. Credit enhancement is defined as the percentage of subordinated tranches, excess spread, and over-collateralization, if any, in a security structure that will generally absorb losses before we will experience a loss on the security. A credit enhancement percentage of zero reflects a security that has no remaining credit support and is likely to have experienced an actual principal loss. The calculated averages represent the dollar-weighted averages of the private-label RMBS in each category shown. The classification (prime, Alt-A or subprime) is based on the model used to estimate the cash flows for the security, which may not be the same as the classification by the rating agency at the time of origination. Significant Modeling Assumptions for OTTI private-label RMBS for the three months ended June 30, 2015 Year of Securitization Prepayment Rates (1) Default Rates (1) Loss Severities (1) Current Credit Enhancement (1) Prime - 2006 16.0 % 16.3 % 34.3 % 0.0 % (1) Weighted average based on UPB. Results of OTTI Evaluation Process. As a result of our analysis, OTTI credit losses were recognized for one security for the three and six months ended June 30, 2015 and one security for the three and six months ended June 30, 2014 . We determined that the unrealized losses on the remaining private-label RMBS and ABS were temporary as we expect to recover the entire amortized cost. The following table presents a rollforward of the amounts related to credit losses recognized in earnings. The rollforward excludes accretion of credit losses for securities that have not experienced a significant increase in cash flows. Three Months Ended Six Months Ended June 30, June 30, Credit Loss Rollforward 2015 2014 2015 2014 Balance at beginning of period $ 68,374 $ 72,457 $ 69,626 $ 72,287 Additions: Additional credit losses for which OTTI was previously recognized (1) 32 58 32 228 Reductions: Increases in cash flows expected to be collected (accreted as interest income over the remaining lives of the applicable securities) (2,357 ) (931 ) (3,609 ) (931 ) Balance at end of period $ 66,049 $ 71,584 $ 66,049 $ 71,584 (1) For the three and six months ended June 30, 2015 and 2014 , the amount relates to one security originally impaired prior to January 1, 2014 . The following table presents the June 30, 2015 classification and balances of OTTI securities impaired prior to that date (i.e., life-to-date) but not necessarily as of that date. Securities are classified based on the originator's classification at the time of origination or based on the classification by the NRSROs upon issuance. Because there is no universally accepted definition of prime, Alt-A or subprime underwriting standards, such classifications are subjective. June 30, 2015 HTM Securities AFS Securities OTTI Life-to-Date UPB Amortized Cost Carrying Value Estimated Fair Value UPB Amortized Cost Estimated Fair Value Private-label RMBS - prime $ — $ — $ — $ — $ 386,909 $ 328,152 $ 364,719 Home equity loan ABS - subprime 707 677 527 602 — — — Total $ 707 $ 677 $ 527 $ 602 $ 386,909 $ 328,152 $ 364,719 OTTI Evaluation Process and Results - All Other AFS and HTM Securities. Other U.S. and GSE Obligations and TVA Debentures. For other U.S. obligations, GSE obligations, and TVA debentures, we determined that, based on current expectations, the strength of the issuers' guarantees through direct obligations of or support from the United States government is sufficient to protect us from any losses. As a result, all of the gross unrealized losses as of June 30, 2015 are considered temporary.

Advances

Advances	6 Months Ended
	Jun. 30, 2015
Advances [Abstract]
Advances	Note 6 - Advances We had advances outstanding, as presented below by year of contractual maturity, with current interest rates ranging from 0% to 7.53% . June 30, 2015 December 31, 2014 Year of Contractual Maturity Amount WAIR % Amount WAIR % Overdrawn demand and overnight deposit accounts $ 1,200 2.44 $ — — Due in 1 year or less 10,014,629 0.70 7,406,652 0.83 Due after 1 year through 2 years 2,521,285 1.24 2,529,649 1.28 Due after 2 years through 3 years 2,765,255 1.90 2,331,427 1.57 Due after 3 years through 4 years 1,496,916 2.04 2,047,262 2.05 Due after 4 years through 5 years 2,539,194 1.55 1,571,567 2.51 Thereafter 4,846,986 1.42 4,743,645 1.31 Total advances, par value 24,185,465 1.21 20,630,202 1.33 Fair-value hedging adjustments 95,336 117,118 Unamortized swap termination fees associated with modified advances, net of deferred prepayment fees 37,556 42,347 Total advances $ 24,318,357 $ 20,789,667 Prepayments . At June 30, 2015 and December 31, 2014 , we had $6.2 billion and $5.6 billion , respectively, of advances that can be prepaid without incurring prepayment or termination fees. All other advances may only be prepaid by paying a fee that is sufficient to make us financially indifferent to the prepayment of the advance. At June 30, 2015 and December 31, 2014 , we had putable advances outstanding totaling $335,500 and $179,000 , respectively. The following table presents advances by the earlier of the year of contractual maturity or the next call date and next put date. Year of Contractual Maturity or Next Call Date Year of Contractual Maturity or Next Put Date June 30, December 31, June 30, December 31, Overdrawn demand and overnight deposit accounts $ 1,200 $ — $ 1,200 $ — Due in 1 year or less 14,245,409 11,293,767 10,296,129 7,574,152 Due after 1 year through 2 years 2,722,535 2,533,649 2,468,785 2,499,649 Due after 2 years through 3 years 2,679,090 2,208,677 2,684,255 2,233,927 Due after 3 years through 4 years 1,271,916 1,847,262 1,486,916 2,012,262 Due after 4 years through 5 years 1,704,194 1,506,567 2,441,194 1,566,567 Thereafter 1,561,121 1,240,280 4,806,986 4,743,645 Total advances, par value $ 24,185,465 $ 20,630,202 $ 24,185,465 $ 20,630,202 Credit Risk Exposure and Security Terms. At June 30, 2015 and December 31, 2014 , we had a total of $ 12.5 billion and $8.3 billion , respectively, of advances outstanding, at par, to single borrowers with balances that were greater than or equal to $1.0 billion . These advances, representing 52% and 40% , respectively, of total advances at par outstanding on those dates, were made to seven and five borrowers, respectively. At June 30, 2015 and December 31, 2014 , we held $ 22.4 billion and $15.1 billion , respectively, of UPB of collateral to cover the advances to these borrowers. See Note 8 - Allowance for Credit Losses for information related to credit risk on advances and allowance methodology for credit losses.

Mortgage Loans Held for Portfol

Mortgage Loans Held for Portfolio	6 Months Ended
	Jun. 30, 2015
Mortgage Loans on Real Estate [Abstract]
Mortgage Loans Held for Portfolio	Note 7 - Mortgage Loans Held for Portfolio The following tables present information on mortgage loans held for portfolio by term and by type. June 30, 2015 Term MPP MPF Total Fixed-rate long-term mortgages $ 6,211,191 $ 401,909 $ 6,613,100 Fixed-rate medium-term (1) mortgages 1,093,826 72,872 1,166,698 Total mortgage loans held for portfolio, UPB 7,305,017 474,781 7,779,798 Unamortized premiums 147,141 8,001 155,142 Unamortized discounts (3,790 ) (286 ) (4,076 ) Fair-value hedging adjustments 3,663 (453 ) 3,210 Allowance for loan losses (1,200 ) (150 ) (1,350 ) Total mortgage loans held for portfolio, net $ 7,450,831 $ 481,893 $ 7,932,724 December 31, 2014 Term MPP MPF Total Fixed-rate long-term mortgages $ 5,233,682 $ 428,758 $ 5,662,440 Fixed-rate medium-term (1) mortgages 963,083 78,919 1,042,002 Total mortgage loans held for portfolio, UPB 6,196,765 507,677 6,704,442 Unamortized premiums 107,876 8,726 116,602 Unamortized discounts (1,874 ) (302 ) (2,176 ) Fair-value hedging adjustments 4,369 (475 ) 3,894 Allowance for loan losses (2,250 ) (250 ) (2,500 ) Total mortgage loans held for portfolio, net $ 6,304,886 $ 515,376 $ 6,820,262 (1) Defined as a term of 15 years or less at origination. June 30, 2015 Type MPP MPF Total Conventional $ 6,731,081 $ 379,966 $ 7,111,047 Government 573,936 94,815 668,751 Total mortgage loans held for portfolio, UPB $ 7,305,017 $ 474,781 $ 7,779,798 December 31, 2014 Type MPP MPF Total Conventional $ 5,562,460 $ 406,469 $ 5,968,929 Government 634,305 101,208 735,513 Total mortgage loans held for portfolio, UPB $ 6,196,765 $ 507,677 $ 6,704,442 For information related to our credit risk on mortgage loans and allowance for loan losses, see Note 8 - Allowance for Credit Losses .

Allowance for Credit Losses

Allowance for Credit Losses	6 Months Ended
	Jun. 30, 2015
Allowance for Credit Losses [Abstract]
Allowance for Credit Losses	Note 8 - Allowance for Credit Losses We have established a methodology to determine the allowance for credit losses for each of our portfolio segments: credit products (advances, letters of credit, and other extensions of credit to members); term securities purchased under agreements to resell; term federal funds sold; government-guaranteed or insured mortgage loans held for portfolio; and conventional mortgage loans held for portfolio. A description of the allowance methodologies for our portfolio segments as well as our policy for impairing financing receivables and charging them off when necessary is disclosed in Note 1 - Summary of Significant Accounting Policies and Note 9 - Allowance for Credit Losses in our 2014 Form 10-K. Our policy for placing loans on non-accrual status was updated during the second quarter of 2015, and a description of this change is disclosed in Note 1 - Summary of Significant Accounting Policies and Change in Accounting Principle herein. Credit Products. Using a risk-based approach, we consider the amount and quality of the collateral pledged and the borrower's financial condition to be the primary indicators of credit quality on the borrower's credit products. At June 30, 2015 and December 31, 2014 , we had rights to collateral on a borrower-by-borrower basis with an estimated value in excess of our outstanding extensions of credit. At June 30, 2015 and December 31, 2014 , we did not have any credit products that were past due, on non-accrual status, or considered impaired. In addition, there were no TDRs related to credit products during the six months ended June 30, 2015 and 2014 . Based upon the collateral held as security, our credit extension and collateral policies, our credit analysis and the repayment history on credit products, we have not recorded any allowance for credit losses on credit products and no liability was recorded to reflect an allowance for credit losses for off-balance sheet credit exposures. For additional information about off-balance sheet credit exposure, see Note 16 - Commitments and Contingencies . Mortgage Loans. Collectively Evaluated Mortgage Loans . Collectively Evaluated MPP Loans. Our loan loss analysis includes collectively evaluating the MPP pools of conventional loans for impairment. The measurement of our allowance for loan losses includes evaluating (i) homogeneous pools of mortgage loans past due 180 days or more; and (ii) the current to 179 days past due portion of the loan portfolio. This loan loss analysis considers MPP pool-specific attribute data, estimated liquidation value of real estate collateral held, estimated costs associated with maintaining and disposing of the collateral, and credit enhancements. Delinquency reports are used to determine the population of loans incorporated into the allowance for loan loss analysis. Beginning in the first quarter of 2015, we refined our technique for estimating losses on mortgage loans past due 180 days or more to incorporate loan-level property values obtained from a third-party model, instead of using a historical weighted-average collateral recovery rate. A haircut is applied to these loan-level values to capture the potential impact of severely distressed property sales. The reduced values are then aggregated to the pool level and are further reduced for estimated liquidation costs to determine the estimated liquidation value. Credit Enhancements. The following table presents the actual activity in the LRA. Three Months Ended June 30, Six Months Ended June 30, LRA Activity 2015 2014 2015 2014 Balance of LRA, beginning of period $ 72,178 $ 46,958 $ 61,949 $ 45,330 Additions 10,959 3,684 21,508 6,110 Claims paid (361 ) (617 ) (547 ) (1,253 ) Distributions (152 ) (107 ) (286 ) (269 ) Balance of LRA, end of period $ 82,624 $ 49,918 $ 82,624 $ 49,918 MPP Credit Enhancements. The following table presents the estimated impact of credit enhancements on the allowance. MPP Credit Waterfall June 30, 2015 December 31, 2014 Estimated losses remaining after borrower's equity, before credit enhancements $ 12,007 $ 25,232 Portion of estimated losses recoverable from PMI (2,361 ) (3,301 ) Portion of estimated losses recoverable from LRA (1) (1,513 ) (5,334 ) Portion of estimated losses recoverable from SMI (7,072 ) (14,587 ) Allowance for unrecoverable PMI/SMI 139 240 Allowance for MPP loan losses $ 1,200 $ 2,250 (1) Amounts recoverable limited to (i) estimated losses remaining after borrower's equity and PMI and (ii) the remaining balance in each pool's portion of the LRA. The remainder of the LRA is available to cover any losses not yet incurred and to distribute any excess funds to members. MPF Credit Enhancements. CE fees paid to PFIs were $90 and $101 for the three months ended June 30, 2015 and 2014 , respectively, compared with $184 and $203 for the six months ended June 30, 2015 and 2014 , respectively. Performance-based CE fees may be withheld to cover losses allocated to us. If losses occur in an MCC, these losses will either be: (i) recovered through the withholding of future performance-based CE fees from the PFI or (ii) absorbed by us in the FLA. As of June 30, 2015 and December 31, 2014 , our exposure under the FLA was $3,462 and $3,431 , respectively, with CE obligations available to cover losses in excess of the FLA totaling $26,862 and $26,851 , respectively. Any estimated losses that would be absorbed by the CE obligation are not included in our allowance for loan losses. Accordingly, the allowance was reduced by $0 and $2 as of June 30, 2015 and December 31, 2014 , respectively, for the amount in excess of the FLA to be covered by PFIs’ CE obligations. The resulting allowance for MPF loan losses was $150 at June 30, 2015 and $250 at December 31, 2014 . Allowance for Loan Losses on Mortgage Loans. The tables below present a rollforward of our allowance for loan losses, the allowance for loan losses by impairment methodology, and the recorded investment in mortgage loans by impairment methodology. MPP MPF Rollforward of Allowance Conventional Conventional Total Allowance for loan losses, March 31, 2015 $ 2,000 $ 250 $ 2,250 Charge-offs, net of recoveries 53 (2 ) 51 Provision for (reversal of) loan losses (853 ) (98 ) (951 ) Allowance for loan losses, June 30, 2015 $ 1,200 $ 150 $ 1,350 Allowance for loan losses, March 31, 2014 $ 3,000 $ 500 $ 3,500 Charge-offs, net of recoveries (164 ) — (164 ) Provision for (reversal of) loan losses 164 (250 ) (86 ) Allowance for loan losses, June 30, 2014 $ 3,000 $ 250 $ 3,250 Allowance for loan losses, December 31, 2014 $ 2,250 $ 250 $ 2,500 Charge-offs, net of recoveries (760 ) (2 ) (762 ) Provision for (reversal of) loan losses (290 ) (98 ) (388 ) Allowance for loan losses, June 30, 2015 $ 1,200 $ 150 $ 1,350 Allowance for loan losses, December 31, 2013 $ 4,000 $ 500 $ 4,500 Charge-offs, net of recoveries (451 ) (9 ) (460 ) Provision for (reversal of) loan losses (549 ) (241 ) (790 ) Allowance for loan losses, June 30, 2014 $ 3,000 $ 250 $ 3,250 Allowance for Loan Losses, June 30, 2015 Loans collectively evaluated for impairment $ 1,103 $ 150 $ 1,253 Loans individually evaluated for impairment (1) 97 — 97 Total allowance for loan losses $ 1,200 $ 150 $ 1,350 Allowance for Loan Losses, December 31, 2014 Loans collectively evaluated for impairment $ 1,776 $ 250 $ 2,026 Loans individually evaluated for impairment (1) 474 — 474 Total allowance for loan losses $ 2,250 $ 250 $ 2,500 Recorded Investment, June 30, 2015 Loans collectively evaluated for impairment $ 6,879,585 $ 388,243 $ 7,267,828 Loans individually evaluated for impairment (1) 19,334 — 19,334 Total recorded investment $ 6,898,919 $ 388,243 $ 7,287,162 Recorded Investment, December 31, 2014 Loans collectively evaluated for impairment $ 5,667,524 $ 415,569 $ 6,083,093 Loans individually evaluated for impairment (1) 19,889 — 19,889 Total recorded investment $ 5,687,413 $ 415,569 $ 6,102,982 (1) The recorded investment in our MPP conventional loans individually evaluated for impairment excludes principal that was previously paid in full by the servicers as of June 30, 2015 and December 31, 2014 of $4,001 and $5,519 , respectively, that remains subject to potential claims by those servicers for any losses resulting from past or future liquidations of the underlying properties. However, the MPP allowance for loan losses includes $30 and $153 for these potential claims as of June 30, 2015 and December 31, 2014 , respectively. As a result of our recent loss history, beginning in the first quarter of 2015, for conventional mortgage loans that are 180 days or more delinquent and/or where the borrower has filed for bankruptcy, we charge off the portion of the outstanding balance in excess of estimated fair value of the underlying property, less cost to sell and adjusted for any available credit enhancements. Credit Quality Indicators. The tables below present our key credit quality indicators for mortgage loans held for portfolio. Mortgage Loans Held for Portfolio June 30, 2015 MPP MPF Conventional FHA Conventional Government Total Past due 30-59 days $ 46,989 $ 16,628 $ 627 $ 1,205 $ 65,449 Past due 60-89 days 12,140 4,733 1 478 17,352 Past due 90 days or more 38,810 2,613 175 188 41,786 Total past due 97,939 23,974 803 1,871 124,587 Total current 6,800,980 560,002 387,440 94,259 7,842,681 Total mortgage loans, recorded investment 6,898,919 583,976 388,243 96,130 7,967,268 Net unamortized premiums (135,331 ) (8,020 ) (6,746 ) (969 ) (151,066 ) Fair-value hedging adjustments (3,619 ) (44 ) 390 63 (3,210 ) Accrued interest receivable (28,888 ) (1,976 ) (1,921 ) (409 ) (33,194 ) Total mortgage loans held for portfolio, UPB $ 6,731,081 $ 573,936 $ 379,966 $ 94,815 $ 7,779,798 Other Delinquency Statistics June 30, 2015 In process of foreclosure (1) $ 26,752 $ — $ — $ — $ 26,752 Serious delinquency rate (2) 0.56 % 0.45 % 0.05 % 0.20 % 0.52 % Past due 90 days or more still accruing interest (3) $ 31,998 $ 2,613 $ — $ 188 $ 34,799 On non-accrual status 8,125 — 335 — 8,460 Mortgage Loans Held for Portfolio December 31, 2014 MPP MPF Conventional FHA Conventional Government Total Past due 30-59 days $ 59,365 $ 25,954 $ 1,011 $ 1,287 $ 87,617 Past due 60-89 days 14,879 6,010 252 657 21,798 Past due 90 days or more 49,128 3,636 1 483 53,248 Total past due 123,372 35,600 1,264 2,427 162,663 Total current 5,564,041 609,711 414,305 100,184 6,688,241 Total mortgage loans, recorded investment 5,687,413 645,311 415,569 102,611 6,850,904 Net unamortized premiums (97,411 ) (8,591 ) (7,400 ) (1,024 ) (114,426 ) Fair-value hedging adjustments (4,323 ) (45 ) 417 57 (3,894 ) Accrued interest receivable (23,219 ) (2,370 ) (2,117 ) (436 ) (28,142 ) Total mortgage loans held for portfolio, UPB $ 5,562,460 $ 634,305 $ 406,469 $ 101,208 $ 6,704,442 Other Delinquency Statistics December 31, 2014 In process of foreclosure (1) $ 32,369 $ — $ — $ — $ 32,369 Serious delinquency rate (2) 0.86 % 0.56 % — % 0.47 % 0.78 % Past due 90 days or more still accruing interest (3) $ 46,341 $ 3,636 $ — $ 483 $ 50,460 On non-accrual status 7,207 — 1 — 7,208 (1) Includes loans for which the decision of foreclosure or similar alternative, such as pursuit of deed-in-lieu of foreclosure, has been reported. Loans in process of foreclosure are included in past due categories depending on their delinquency status. (2) Represents loans 90 days or more past due (including loans in process of foreclosure) expressed as a percentage of the total recorded investment in mortgage loans. The percentage excludes principal and interest amounts that were previously paid in full by the servicers on conventional loans that are pending resolution of potential loss claims. Many government, including FHA, loans are repurchased by the servicers when they reach 90 days or more delinquent status, similar to the rules for servicers of Ginnie Mae MBS, resulting in the lower serious delinquency rate for government loans. (3) Although our past due scheduled/scheduled MPP loans are classified as loans past due 90 days or more based on the mortgagor's payment status, we do not consider these loans to be non-accrual. Troubled Debt Restructurings. The table below presents the recorded investment of the performing and non-performing TDRs. Non-performing represents loans on non-accrual status only. June 30, 2015 December 31, 2014 Recorded Investment Performing Non-Performing Total Performing Non-Performing Total MPP conventional loans $ 17,173 $ 2,161 $ 19,334 $ 13,744 $ 6,145 $ 19,889 Due to the minimal change in terms of modified loans (i.e., no principal forgiven), our pre-modification recorded investment was not materially different than the post-modification recorded investment in TDRs. During the three and six months ended June 30, 2015 certain conventional MPP loans classified as TDRs within the previous 12 months experienced a payment default. A borrower is considered to have defaulted on a TDR if the borrower's contractually due principal or interest is 60 days or more past due at any time. The recorded investment of certain conventional MPP loans classified as TDRs within the previous 12 months that experienced an initial payment default at the end of such periods was $104 and $144 for the three and six months ended June 30, 2015 , respectively. However, a loan can experience another payment default in a subsequent period. There were no such loans during the three or six months ended June 30, 2014 . A loan considered to be a TDR is individually evaluated for impairment when determining its related allowance for loan loss. Credit loss is measured by factoring in expected cash shortfalls as of the reporting date. The tables below present the impaired conventional loans individually evaluated for impairment. The first table presents the recorded investment, UPB and related allowance associated with these loans, while the next table presents the average recorded investment of individually impaired loans and related interest income recognized. June 30, 2015 December 31, 2014 Individually Evaluated Impaired Loans Recorded Investment UPB Related Allowance for Loan Losses Recorded Investment UPB Related Allowance for Loan Losses MPP conventional loans without allowance for loan losses (1) $ 18,215 $ 18,069 $ — $ 13,744 $ 13,647 $ — MPP conventional loans with allowance for loan losses 1,119 1,128 67 6,145 6,099 321 Total $ 19,334 $ 19,197 $ 67 $ 19,889 $ 19,746 $ 321 (1) No allowance for loan losses was recorded on these impaired loans after consideration of the underlying loan-specific attribute data, estimated liquidation value of real estate collateral held, estimated costs associated with maintaining and disposing of the collateral, and credit enhancements. Three Months Ended Three Months Ended June 30, 2015 June 30, 2014 Individually Evaluated Impaired Loans Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized MPP conventional loans without allowance for loan losses $ 18,446 $ 232 $ 18,540 $ 275 MPP conventional loans with allowance for loan losses 1,133 15 948 14 Total $ 19,579 $ 247 $ 19,488 $ 289 Six Months Ended Six Months Ended June 30, 2015 June 30, 2014 Individually Evaluated Impaired Loans Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized MPP conventional loans without allowance for loan losses $ 18,543 $ 455 $ 18,161 $ 530 MPP conventional loans with allowance for loan losses 1,139 79 950 30 Total $ 19,682 $ 534 $ 19,111 $ 560 There was one MPF TDR during the three and six months ended June 30, 2015 . The loan was non-performing at June 30, 2015 and had a recorded investment of $160 . There were no MPF TDRs during the three and six months ended June 30, 2014 .

Derivative and Hedging Activiti

Derivative and Hedging Activities	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative Instruments and Hedging Activities	Note 9 - Derivatives and Hedging Activities Financial Statement Effect and Additional Financial Information. Derivative Notional Amounts. The following table presents the notional amount and estimated fair value of derivative instruments, including the effect of netting adjustments, cash collateral, and the related accrued interest. Notional Estimated Fair Value Estimated Fair Value Amount of of Derivative of Derivative June 30, 2015 Derivatives Assets Liabilities Derivatives designated as hedging instruments: Interest-rate swaps $ 30,595,463 $ 57,482 $ 275,072 Total derivatives designated as hedging instruments 30,595,463 57,482 275,072 Derivatives not designated as hedging instruments: Interest-rate swaps 341,717 301 111 Interest-rate caps/floors 340,500 161 — Interest-rate forwards 175,500 179 33 MDCs 174,189 223 467 Total derivatives not designated as hedging instruments 1,031,906 864 611 Total derivatives before adjustments $ 31,627,369 58,346 275,683 Netting adjustments and cash collateral (1) (16,583 ) (180,049 ) Total derivatives, net $ 41,763 $ 95,634 December 31, 2014 Derivatives designated as hedging instruments: Interest-rate swaps $ 27,527,697 $ 55,095 $ 331,546 Total derivatives designated as hedging instruments 27,527,697 55,095 331,546 Derivatives not designated as hedging instruments: Interest-rate swaps 1,476,365 330 735 Interest-rate caps/floors 340,500 312 — Interest-rate forwards 252,100 — 1,631 MDCs 252,418 711 6 Total derivatives not designated as hedging instruments 2,321,383 1,353 2,372 Total derivatives before adjustments $ 29,849,080 56,448 333,918 Netting adjustments and cash collateral (1) (30,961 ) (230,665 ) Total derivatives, net $ 25,487 $ 103,253 (1) Represents the application of the netting requirements that allow us to settle (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty. Cash collateral placed at June 30, 2015 and December 31, 2014 was $165,007 and $201,284 , respectively. Cash collateral held at June 30, 2015 and December 31, 2014 was $1,540 and $1,580 , respectively. We record derivative instruments, related cash collateral received or pledged, including initial and variation margin, and associated accrued interest, on a net basis by clearing agent and/or by counterparty when we have met the netting requirements. The following table presents separately the estimated fair value of derivative instruments meeting and not meeting netting requirements, including the related collateral received from or pledged to counterparties. June 30, 2015 December 31, 2014 Derivative Assets Derivative Liabilities Derivative Assets Derivative Liabilities Derivative instruments meeting netting requirements: Gross recognized amount Bilateral $ 34,252 $ 245,816 $ 48,532 $ 308,041 Cleared 23,692 29,367 7,205 24,240 Total gross recognized amount 57,944 275,183 55,737 332,281 Gross amounts of netting adjustments and cash collateral Bilateral (33,871 ) (150,682 ) (48,389 ) (206,425 ) Cleared 17,288 (29,367 ) 17,428 (24,240 ) Total gross amounts of netting adjustments and cash collateral (16,583 ) (180,049 ) (30,961 ) (230,665 ) Net amounts after netting adjustments and cash collateral Bilateral 381 95,134 143 101,616 Cleared 40,980 — 24,633 — Total net amounts after netting adjustments and cash collateral 41,361 95,134 24,776 101,616 Derivative instruments not meeting netting requirements (1) 402 500 711 1,637 Total derivatives, at estimated fair value $ 41,763 $ 95,634 $ 25,487 $ 103,253 (1) Includes MDCs and certain interest-rate forwards. The following table presents the components of net gains (losses) on derivatives and hedging activities reported in other income (loss). Three Months Ended June 30, Six Months Ended June 30, Type of Hedge 2015 2014 2015 2014 Net gain (loss) related to fair-value hedge ineffectiveness: Interest-rate swaps $ 6,332 $ (2,908 ) $ 6,441 $ (3,519 ) Total net gain (loss) related to fair-value hedge ineffectiveness 6,332 (2,908 ) 6,441 (3,519 ) Net gain (loss) on derivatives not designated as hedging instruments: Economic hedges: Interest-rate swaps 1,660 4,428 865 5,771 Interest-rate caps/floors (45 ) (413 ) (151 ) (875 ) Interest-rate forwards 1,973 (2,700 ) (1,348 ) (3,425 ) Net interest settlements 201 2,715 492 5,440 MDCs (2,858 ) 2,016 (916 ) 2,714 Total net gain (loss) on derivatives not designated as hedging instruments 931 6,046 (1,058 ) 9,625 Net gains (losses) on derivatives and hedging activities $ 7,263 $ 3,138 $ 5,383 $ 6,106 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 net interest income. Gain (Loss) Gain (Loss) Net Fair- Effect on on on Hedged Value Hedge Net Interest Three Months Ended June 30, 2015 Derivative Item Ineffectiveness Income (1) Advances $ 47,732 $ (44,213 ) $ 3,519 $ (39,242 ) AFS securities 31,739 (32,147 ) (408 ) (24,303 ) CO bonds (4,823 ) 8,044 3,221 14,645 Total $ 74,648 $ (68,316 ) $ 6,332 $ (48,900 ) Three Months Ended June 30, 2014 Advances $ (19,830 ) $ 19,172 $ (658 ) $ (36,883 ) AFS securities (9,093 ) 9,041 (52 ) (24,526 ) CO bonds 29,316 (31,514 ) (2,198 ) 19,563 Total $ 393 $ (3,301 ) $ (2,908 ) $ (41,846 ) Six Months Ended June 30, 2015 Advances $ 10,780 $ (8,508 ) $ 2,272 $ (78,669 ) AFS securities 20,841 (21,828 ) (987 ) (48,732 ) CO Bonds 10,237 (5,081 ) 5,156 31,241 Total $ 41,858 $ (35,417 ) $ 6,441 $ (96,160 ) Six Months Ended June 30, 2014 Advances $ (21,133 ) $ 21,580 $ 447 $ (73,283 ) AFS securities (7,859 ) 7,981 122 (49,021 ) CO Bonds 53,988 (58,076 ) (4,088 ) 38,187 Total $ 24,996 $ (28,515 ) $ (3,519 ) $ (84,117 ) (1) Includes the effect of derivatives in fair-value hedging relationships on net interest income that is recorded in the interest income/expense line item of the respective hedged items. Excludes the interest income/expense of the respective hedged items, which fully offset the interest income/expense of the derivatives, except to the extent of any hedge ineffectiveness. Net interest settlements on derivatives that are not in fair-value hedging relationships are reported in other income (loss). Managing Credit Risk on Derivatives. We are subject to credit risk due to the risk of nonperformance by the counterparties to our derivative transactions. For our bilateral derivatives, we have credit support agreements that contain provisions requiring us to post additional collateral with our counterparties if there is deterioration in our credit rating. If our credit rating is lowered by an NRSRO, we could be required to deliver additional collateral on bilateral derivative instruments in net liability positions. The aggregate estimated fair value of all bilateral derivative instruments with credit risk-related contingent features that were in a net liability position (before cash collateral and related accrued interest on cash collateral) at June 30, 2015 was $212,307 for which we have posted collateral, including accrued interest, with an estimated fair value of $117,901 in the normal course of business. In addition, we held other derivative instruments in a net liability position of $500 that are not subject to credit support agreements containing credit risk-related contingent features. If our credit rating had been lowered by an NRSRO (from an S&P equivalent of AA+ to AA), we could have been required to deliver up to an additional $7,210 of collateral (at estimated fair value) to our bilateral derivative counterparties at June 30, 2015 . For cleared derivatives, the clearinghouse determines initial margin requirements, and generally credit ratings are not factored into the initial margin. However, clearing agents may require additional initial margin to be posted based on credit considerations, including, but not limited to, credit rating downgrades. We were not required to post additional initial margin by our clearing agents at June 30, 2015 .

Consolidated Obligations

Consolidated Obligations	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Consolidated Obligations	Note 10 - Consolidated Obligations Although we are the primary obligor for our portion of consolidated obligations (i.e., those issued on our behalf), we are also jointly and severally liable with each of the other FHLBanks for the payment of the principal and interest on all FHLBank consolidated obligations. The par values of the FHLBanks' outstanding consolidated obligations at June 30, 2015 and December 31, 2014 totaled $852.8 billion and $847.2 billion , respectively. Discount Notes. The following table presents our participation in discount notes outstanding, all of which are due within one year of issuance. Discount Notes June 30, December 31, Book value $ 11,802,629 $ 12,567,696 Par value 11,807,026 12,570,811 Weighted average effective interest rate 0.14 % 0.12 % CO Bonds. The following table presents our participation in CO bonds outstanding by contractual maturity. June 30, 2015 December 31, 2014 Year of Contractual Maturity Amount WAIR% Amount WAIR% Due in 1 year or less $ 14,715,220 0.36 $ 11,695,550 0.33 Due after 1 year through 2 years 3,828,220 0.94 2,018,510 1.49 Due after 2 years through 3 years 2,326,710 1.81 2,158,950 1.76 Due after 3 years through 4 years 1,104,850 2.42 1,934,100 1.49 Due after 4 years through 5 years 1,796,625 2.67 999,700 2.51 Thereafter 5,860,950 3.19 6,692,000 3.11 Total CO bonds, par value 29,632,575 1.32 25,498,810 1.44 Unamortized premiums 29,901 27,138 Unamortized discounts (14,083 ) (14,913 ) Fair-value hedging adjustments (793 ) (7,897 ) Total CO bonds $ 29,647,600 $ 25,503,138 The following tables present our participation in CO bonds outstanding by redemption feature and contractual maturity or next call date. Redemption Feature June 30, December 31, Non-callable / non-putable $ 22,281,575 $ 17,253,810 Callable 7,351,000 8,245,000 Total CO bonds, par value $ 29,632,575 $ 25,498,810 Year of Contractual Maturity or Next Call Date Due in 1 year or less $ 21,933,220 $ 19,918,550 Due after 1 year through 2 years 3,230,220 1,651,510 Due after 2 years through 3 years 1,274,710 883,950 Due after 3 years through 4 years 677,850 461,100 Due after 4 years through 5 years 1,149,625 543,700 Thereafter 1,366,950 2,040,000 Total CO bonds, par value $ 29,632,575 $ 25,498,810

Affordable Housing Program

Affordable Housing Program	6 Months Ended
	Jun. 30, 2015
Affordable Housing Program [Abstract]
Affordable Housing Program	Note 11 - Affordable Housing Program The following table summarizes the activity in our AHP funding obligation. Three Months Ended June 30, Six Months Ended June 30, AHP Activity 2015 2014 2015 2014 Balance at beginning of period $ 35,759 $ 43,211 $ 36,899 $ 42,778 Assessment (expense) 3,801 3,727 7,217 7,616 Subsidy usage, net (1) (4,440 ) (3,476 ) (8,996 ) (6,932 ) Balance at end of period $ 35,120 $ 43,462 $ 35,120 $ 43,462 (1) Subsidies disbursed are reported net of returns/recaptures of previously disbursed subsidies.

Capital

Capital	6 Months Ended
	Jun. 30, 2015
Capital [Abstract]
Capital	Note 12 - Capital We are subject to capital requirements under our capital plan and the Finance Agency regulations as disclosed in Note 15 - Capital in our 2014 Form 10-K. As presented in the following table, we were in compliance with the Finance Agency's capital requirements at June 30, 2015 and December 31, 2014 . For regulatory purposes, AOCI is not considered capital; MRCS, however, is considered capital. June 30, 2015 December 31, 2014 Regulatory Capital Requirements Required Actual Required Actual Risk-based capital $ 555,561 $ 2,212,501 $ 566,683 $ 2,344,283 Regulatory permanent capital-to-asset ratio 4.00 % 4.89 % 4.00 % 5.60 % Regulatory permanent capital $ 1,809,461 $ 2,212,501 $ 1,674,121 $ 2,344,283 Leverage ratio 5.00 % 7.34 % 5.00 % 8.40 % Leverage capital $ 2,261,826 $ 3,318,752 $ 2,092,652 $ 3,516,425 Mandatorily Redeemable Capital Stock. At June 30, 2015 and December 31, 2014 , we had $14,341 and $15,673 , respectively, in capital stock subject to mandatory redemption, which is classified as a liability. There were eight former members holding MRCS at June 30, 2015 and December 31, 2014 . The following tables present the activity in MRCS and distributions on MRCS. Three Months Ended June 30, Six Months Ended June 30, MRCS Activity 2015 2014 2015 2014 Liability at beginning of period $ 15,553 $ 16,786 $ 15,673 $ 16,787 Redemptions/repurchases (1,212 ) (1 ) (1,332 ) (2 ) Liability at end of period $ 14,341 $ 16,785 $ 14,341 $ 16,785 Three Months Ended June 30, Six Months Ended June 30, MRCS Distributions 2015 2014 2015 2014 Recorded as interest expense $ 122 $ 135 $ 256 $ 745 Recorded as distributions from retained earnings — — — — Total $ 122 $ 135 $ 256 $ 745 Excess Capital Stock. Excess capital stock is defined as the amount of stock held by a member or former member in excess of our stock requirement for that institution. Finance Agency rules limit the ability of an FHLBank to create member excess stock under certain circumstances, including when its total excess stock exceeds 1% of total assets or if the issuance of excess stock would cause total excess stock to exceed 1% of total assets. Our excess stock totaled $148,739 at June 30, 2015 , which was 0.3% of our total assets.

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	6 Months Ended
	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Abstract]
Accumulated Other Comprehensive Income	Note 13 - Accumulated Other Comprehensive Income The following table presents a summary of the changes in the components of AOCI for the three and six months ended June 30, 2015 and 2014 . AOCI Rollforward Unrealized Gains on AFS Securities Non-Credit OTTI on AFS Securities Non-Credit OTTI on HTM Securities Pension Benefits Total AOCI Balance, March 31, 2014 $ 12,356 $ 30,141 $ (228 ) $ (4,156 ) $ 38,113 OCI before reclassifications: Net change in unrealized gains (losses) 538 8,619 — — 9,157 Net change in fair value — 38 — — 38 Accretion of non-credit losses — — 19 — 19 Reclassifications from OCI to net income: Non-credit portion of OTTI losses — 58 — — 58 Pension benefits, net — — — (208 ) (208 ) Total other comprehensive income (loss) 538 8,715 19 (208 ) 9,064 Balance, June 30, 2014 $ 12,894 $ 38,856 $ (209 ) $ (4,364 ) $ 47,177 Balance, March 31, 2015 $ 17,582 $ 35,814 $ (163 ) $ (7,167 ) $ 46,066 OCI before reclassifications: Net change in unrealized gains (losses) (2,908 ) 828 — — (2,080 ) Net change in fair value — (107 ) — — (107 ) Accretion of non-credit loss — — 12 — 12 Reclassifications from OCI to net income: Non-credit portion of OTTI losses — 32 — — 32 Pension benefits, net — — — (1,075 ) (1,075 ) Total other comprehensive income (loss) (2,908 ) 753 12 (1,075 ) (3,218 ) Balance, June 30, 2015 $ 14,674 $ 36,567 $ (151 ) $ (8,242 ) $ 42,848 AOCI Rollforward Unrealized Gains (Losses) on AFS Securities (Note 3) Non-Credit OTTI on AFS Securities (Notes 3 and 5) Non-Credit OTTI on HTM Securities (Notes 4 and 5) Pension Benefits Total AOCI Balance, December 31, 2013 $ 317 $ 25,936 $ (241 ) $ (4,292 ) $ 21,720 OCI before reclassifications: Net change in unrealized gains (losses) 12,577 12,873 — — 25,450 Net change in fair value — (181 ) — — (181 ) Accretion of non-credit loss — — 32 — 32 Reclassifications from OCI to net income: Non-credit portion of OTTI losses — 228 — — 228 Pension benefits, net — — — (72 ) (72 ) Total other comprehensive income (loss) 12,577 12,920 32 (72 ) 25,457 Balance, June 30, 2014 $ 12,894 $ 38,856 $ (209 ) $ (4,364 ) $ 47,177 Balance, December 31, 2014 $ 16,078 $ 38,172 $ (175 ) $ (7,415 ) $ 46,660 OCI before reclassifications: Net change in unrealized gains (losses) (1,404 ) (1,531 ) — — (2,935 ) Net change in fair value — (106 ) — — (106 ) Accretion of non-credit loss — — 24 — 24 Reclassifications from OCI to net income: Non-credit portion of OTTI losses — 32 — — 32 Pension benefits, net — — — (827 ) (827 ) Total other comprehensive income (loss) (1,404 ) (1,605 ) 24 (827 ) (3,812 ) Balance, June 30, 2015 $ 14,674 $ 36,567 $ (151 ) $ (8,242 ) $ 42,848

Segment Information

Segment Information	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Segment Information	Note 14 - Segment Information The following table presents our financial performance by operating segment. Three Months Ended June 30, 2015 Three Months Ended June 30, 2014 Traditional Mortgage Loans Total Traditional Mortgage Loans Total Net interest income $ 31,746 $ 15,552 $ 47,298 $ 27,954 $ 15,741 $ 43,695 Provision for (reversal of) credit losses — (951 ) (951 ) — (86 ) (86 ) Other income (loss) 8,800 (859 ) 7,941 10,583 (621 ) 9,962 Other expenses 15,575 2,729 18,304 14,461 2,147 16,608 Income before assessments 24,971 12,915 37,886 24,076 13,059 37,135 Affordable Housing Program assessments 2,510 1,291 3,801 2,421 1,306 3,727 Net income $ 22,461 $ 11,624 $ 34,085 $ 21,655 $ 11,753 $ 33,408 Six Months Ended June 30, 2015 Six Months Ended June 30, 2014 Traditional Mortgage Loans Total Traditional Mortgage Loans Total Net interest income $ 62,667 $ 33,370 $ 96,037 $ 58,952 $ 32,329 $ 91,281 Provision for (reversal of) credit losses — (388 ) (388 ) — (790 ) (790 ) Other income (loss) 13,664 (2,147 ) 11,517 16,466 (619 ) 15,847 Other expenses 30,672 5,359 36,031 28,243 4,264 32,507 Income before assessments 45,659 26,252 71,911 47,175 28,236 75,411 Affordable Housing Program assessments 4,592 2,625 7,217 4,792 2,824 7,616 Net income $ 41,067 $ 23,627 $ 64,694 $ 42,383 $ 25,412 $ 67,795 The following table presents asset balances by operating segment. By Date Traditional Mortgage Loans Total June 30, 2015 $ 37,303,793 $ 7,932,724 $ 45,236,517 December 31, 2014 35,032,770 6,820,262 41,853,032

Estimated Fair Values

Estimated Fair Values	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Estimated Fair Values	Note 15 - Estimated Fair Values We review the fair value hierarchy classifications of our financial instruments on a quarterly basis. Changes in the observability of the inputs may result in a reclassification of certain assets or liabilities. Such reclassifications are reported as transfers in/out at estimated fair value as of the beginning of the quarter in which the changes occur. There were no such reclassifications during the three or six months ended June 30, 2015 or 2014 . The following tables present the carrying value and estimated fair value of each of our financial instruments. The total of the estimated fair values does not represent an estimate of our overall market value as a going concern, which would take into account, among other considerations, future business opportunities and the net profitability of assets and liabilities. June 30, 2015 Estimated Fair Value Carrying Netting Financial Instruments Value Total Level 1 Level 2 Level 3 Adjustment (1) Assets: Cash and due from banks $ 635,017 $ 635,017 $ 635,017 $ — $ — $ — Interest-bearing deposits 251 251 — 251 — — Securities Purchased Under Agreements to Resell 200,000 200,000 — 200,000 — — Federal funds sold 1,895,000 1,895,000 — 1,895,000 — — AFS securities 3,570,926 3,570,926 — 3,206,207 364,719 — HTM securities 6,481,002 6,590,575 — 6,493,727 96,848 — Advances 24,318,357 24,381,257 — 24,381,257 — — Mortgage loans held for portfolio, net 7,932,724 8,166,880 — 8,132,629 34,251 — Accrued interest receivable 86,971 86,971 — 86,971 — — Derivative assets, net 41,763 41,763 — 58,346 — (16,583 ) Grantor trust assets (included in other assets) 13,025 13,025 13,025 — — — Liabilities: Deposits 1,163,762 1,163,762 — 1,163,762 — — Consolidated Obligations: Discount notes 11,802,629 11,807,026 — 11,807,026 — — Bonds 29,647,600 29,971,732 — 29,971,732 — — Accrued interest payable 83,461 83,461 — 83,461 — — Derivative liabilities, net 95,634 95,634 — 275,683 — (180,049 ) MRCS 14,341 14,341 14,341 — — — December 31, 2014 Estimated Fair Value Carrying Netting Financial Instruments Value Total Level 1 Level 2 Level 3 Adjustment (1) Assets: Cash and due from banks $ 3,550,939 $ 3,550,939 $ 3,550,939 $ — $ — $ — Interest-bearing deposits 483 483 — 483 — — AFS securities 3,556,165 3,556,165 — 3,155,115 401,050 — HTM securities 6,982,115 7,098,616 — 6,987,768 110,848 — Advances 20,789,667 20,844,701 — 20,844,701 — — Mortgage loans held for portfolio, net 6,820,262 7,120,935 — 7,078,490 42,445 — Accrued interest receivable 82,866 82,866 — 82,866 — — Derivative assets, net 25,487 25,487 — 56,448 — (30,961 ) Grantor trust assets (included in other assets) 12,980 12,980 12,980 — — — Liabilities: Deposits 1,084,042 1,084,042 — 1,084,042 — — Consolidated Obligations: Discount notes 12,567,696 12,570,811 — 12,570,811 — — Bonds 25,503,138 25,882,934 — 25,882,934 — — Accrued interest payable 77,034 77,034 — 77,034 — — Derivative liabilities, net 103,253 103,253 — 333,918 — (230,665 ) MRCS 15,673 15,673 15,673 — — — (1) Represents the application of the netting requirements that allow the settlement of (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty. Summary of Valuation Techniques and Significant Inputs. A description of the valuation techniques, significant inputs, and levels of fair value hierarchy is disclosed in Note 19 - Estimated Fair Values in our 2014 Form 10-K. No changes have been made in the current year, except as disclosed below. Mortgage Loans Held for Portfolio . We record non-recurring fair value adjustments to reflect partial charge-offs on certain mortgage loans. We estimate the fair value of these assets using a current property value obtained from a third-party model with a haircut applied to the modeled values to capture potentially distressed property sales. Estimated Fair Value Measurements. The following tables present by level within the fair value hierarchy the estimated fair value of our financial assets and liabilities that are recorded at estimated fair value on a recurring or non-recurring basis on our statement of condition. We did not have any financial assets or liabilities recorded at estimated fair value on a non-recurring basis on our statement of condition as of December 31, 2014 . Netting June 30, 2015 Total Level 1 Level 2 Level 3 Adjustment (1) AFS securities: GSE and TVA debentures $ 3,127,753 $ — $ 3,127,753 $ — $ — GSE MBS 78,454 — 78,454 — — Private-label RMBS 364,719 — — 364,719 — Total AFS securities 3,570,926 — 3,206,207 364,719 — Derivative assets: Interest-rate related 41,361 — 57,944 — (16,583 ) Interest-rate forwards 179 — 179 — — MDCs 223 — 223 — — Total derivative assets, net 41,763 — 58,346 — (16,583 ) Grantor trust assets (included in other assets) 13,025 13,025 — — — Total assets at recurring estimated fair value $ 3,625,714 $ 13,025 $ 3,264,553 $ 364,719 $ (16,583 ) Derivative liabilities: Interest-rate related $ 95,134 $ — $ 275,183 $ — $ (180,049 ) Interest-rate forwards 33 — 33 — — MDCs 467 — 467 — — Total derivative liabilities, net 95,634 — 275,683 — (180,049 ) Total liabilities at recurring estimated fair value $ 95,634 $ — $ 275,683 $ — $ (180,049 ) Mortgage loans held for portfolio (2) $ 5,018 $ — $ — $ 5,018 Total assets at non-recurring estimated fair value $ 5,018 $ — $ — $ 5,018 $ — December 31, 2014 AFS securities: GSE and TVA debentures $ 3,155,115 $ — $ 3,155,115 $ — $ — Private-label RMBS 401,050 — — 401,050 — Total AFS securities 3,556,165 — 3,155,115 401,050 — Derivative assets: Interest-rate related 24,776 — 55,737 — (30,961 ) MDCs 711 — 711 — — Total derivative assets, net 25,487 — 56,448 — (30,961 ) Grantor trust assets (included in other assets) 12,980 12,980 — — — Total assets at recurring estimated fair value $ 3,594,632 $ 12,980 $ 3,211,563 $ 401,050 $ (30,961 ) Derivative liabilities: Interest-rate related $ 101,616 $ — $ 332,281 $ — $ (230,665 ) Interest-rate forwards 1,631 — 1,631 — — MDCs 6 — 6 — — Total derivative liabilities, net 103,253 — 333,918 — (230,665 ) Total liabilities at recurring estimated fair value $ 103,253 $ — $ 333,918 $ — $ (230,665 ) (1) Represents the application of the netting requirements that allow the settlement of (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty. (2) Amounts are as of the date the fair value adjustment was recorded during the six months ended June 30, 2015 . Level 3 Disclosures for All Assets and Liabilities that are Measured at Fair Value on a Recurring Basis. The table below presents a rollforward of our AFS private-label RMBS measured at estimated fair value on a recurring basis using Level 3 significant inputs. The estimated fair values for the private-label RMBS were determined using a pricing source, such as a dealer quote or comparable security price, for which the significant unobservable inputs used to determine the price were not readily available. Three Months Ended June 30, Six Months Ended June 30, Level 3 Rollforward 2015 2014 2015 2014 Balance, beginning of period $ 380,835 $ 455,812 $ 401,050 $ 469,685 Total realized and unrealized gains (losses): Accretion of credit losses in interest income 2,242 853 3,361 874 Net gains (losses) on changes in fair value in other income (loss) (32 ) (58 ) (32 ) (228 ) Net change in fair value not in excess of cumulative non-credit losses in OCI (107 ) 38 (106 ) (181 ) Unrealized gains (losses) in OCI 828 8,619 (1,531 ) 12,873 Reclassification of non-credit portion in OCI to other income (loss) 32 58 32 228 Purchases, issuances, sales and settlements: Settlements (19,079 ) (22,610 ) (38,055 ) (40,539 ) Balance, end of period $ 364,719 $ 442,712 $ 364,719 $ 442,712 Net gains (losses) included in earnings attributable to changes in fair value relating to assets still held at end of period $ 2,210 $ 795 $ 3,329 $ 646

Commitments and Contingencies

Commitments and Contingencies	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Note 16 - Commitments and Contingencies The following table presents our off-balance-sheet commitments at their notional amounts. June 30, 2015 Type of Commitment Expire within one year Expire after one year Total Letters of credit outstanding $ 43,944 $ 158,627 $ 202,571 Unused lines of credit (1) 994,593 — 994,593 Commitments to fund additional advances (2) 99,988 — 99,988 Commitments to fund or purchase mortgage loans (3) 174,189 — 174,189 Unsettled CO bonds, at par (4) 20,500 — 20,500 (1) Maximum line of credit amount per member is $50,000 . (2) Generally for periods up to six months. (3) Generally for periods up to 91 days. (4) Includes $15,000 hedged with associated interest-rate swaps. Pledged Collateral. At June 30, 2015 and December 31, 2014 , we had pledged cash collateral, at par, of $164,994 and $201,267 , respectively, to counterparties and clearing agents. At June 30, 2015 and December 31, 2014 , we had not pledged any securities as collateral. Legal Proceedings. We are subject to legal proceedings arising in the normal course of business. We would record an accrual for a loss contingency when it is probable that a loss for which we could be liable has been incurred and the amount can be reasonably estimated. After consultation with legal counsel, management does not anticipate that the ultimate liability, if any, arising out of these proceedings will have a material effect on our financial condition, results of operations or cash flows. In 2010, we filed a complaint asserting claims against several entities for negligent misrepresentation and violations of state and federal securities law occurring in connection with the sale of private-label RMBS to us. In 2013, 2014 and 2015, we executed confidential settlement agreements with certain defendants in this litigation, pursuant to which we have dismissed all pending claims against, and provided legal releases to, certain entities with respect to all applicable securities at issue in the litigation, in consideration of our receipt of cash payments on behalf of those defendants. These payments totaled $0 and $4,732 , net of legal fees and litigation expenses, for the three and six months ended June 30, 2015 compared with $6,134 and $8,548 for the three and six months ended June 30, 2014 , respectively, and were recorded in other income. Additional discussion of other commitments and contingencies is provided in Note 6 - Advances ; Note 7 - Mortgage Loans Held for Portfolio ; Note 9 - Derivatives and Hedging Activities ; Note 10 - Consolidated Obligations ; Note 12 - Capital ; and Note 15 - Estimated Fair Values .

Transactions with Related Parti

Transactions with Related Parties and Other Entities	6 Months Ended
	Jun. 30, 2015
Related Party Transactions [Abstract]
Transactions with Related Parties and Other Entities	Note 17 - Transactions with Related Parties and Other Entities For financial reporting purposes, we define related parties as those members, and former members and their affiliates, with capital stock outstanding in excess of 10% of our total outstanding capital stock and MRCS. We had no related parties at June 30, 2015 or December 31, 2014 as no institution had capital stock outstanding in excess of 10% of our total outstanding capital stock and MRCS. Flagstar Bank, FSB was a related party at June 30, 2014 . We had net advances to and (repayments from) Flagstar for the three and six months ended June 30, 2014 of $(93,295) and $43,705 , respectively. Transactions with Directors' Financial Institutions. The following table presents the outstanding balances with respect to transactions with directors' financial institutions and their balance as a percent of the total balance on our statement of condition. Capital stock and MRCS Advances Mortgage loans held for portfolio (1) Date Par value % of Total Par value % of Total UPB % of Total June 30, 2015 $ 27,128 2 % $ 258,526 1 % $ 176,920 2 % December 31, 2014 40,213 3 % 261,146 1 % 167,072 2 % (1) Represents UPB of mortgage loans purchased from directors' financial institutions. The following table presents net advances to (repayments from) directors' financial institutions and mortgage loans purchased from directors' financial institutions, taking into account the dates of the directors' appointments and term endings. Three Months Ended Six Months Ended June 30, June 30, Transactions with Directors' Financial Institutions 2015 2014 2015 2014 Net advances (repayments) $ (2,258 ) $ (12,401 ) $ (2,620 ) $ (24,736 ) Mortgage loans purchased 13,734 6,181 21,124 10,916 Transactions with Other FHLBanks. We purchased no participation interests from the FHLBank of Topeka in mortgage loans originated by certain of its members under the MPF program in 2015 , compared with $0 and $11,011 for the three and six months ended June 30, 2014 , respectively. Beginning i n July 2012, we pay an MPF provider fee to the FHLBank of Chicago for our participation in the MPF program that is recorded in other expenses. For the three and six months ended June 30, 2015 , we paid such fees of $67 and $136 , respectively, compared with $75 and $150 for the three and six months ended June 30, 2014 , respectively.

Summary of Significant Accoun26

Summary of Significant Accounting Policies (Policies)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Basis of Accounting, Policy	Basis of Presentation. The accompanying interim financial statements of the Federal Home Loan Bank of Indianapolis have been prepared in accordance with GAAP and SEC requirements for interim financial information. Accordingly, they do not include all of the information and disclosures required by GAAP for complete financial statements.
Reclassifications, Policy	Reclassifications. We have reclassified certain amounts from the prior periods to conform to the current period presentation. These reclassifications had no effect on net income, total comprehensive income, total capital, or net cash flows.
Use of Estimates, Policy	Use of Estimates. When preparing financial statements in accordance with GAAP, we are required to make subjective assumptions and estimates that may affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported amounts of income and expense. The most significant estimates include the determination of other-than-temporary impairment of certain private-label RMBS, the fair values of derivatives and other financial instruments, and the allowance for credit losses. Although the reported amounts and disclosures reflect our best estimates, actual results could differ significantly from these estimates.

Summary of Significant Accoun27

Summary of Significant Accounting Policies Accounting Policies (Tables)	6 Months Ended
	Jun. 30, 2015
Accounting Policies [Abstract]
Schedule of New Accounting Pronouncements and Changes in Accounting Principles	The following table illustrates the impact of the change in amortization and accretion methodology on our previously reported financial statements as of and for the three and six months ended June 30, 2014. For the Three Months Ended June 30, 2014 Previous Method New Method Effect of Change Statements of Income: Interest income - mortgage loans held for portfolio $ 57,214 $ 57,511 $ 297 Net interest income after provision for credit losses 43,484 43,781 297 Income before assessments 36,838 37,135 297 Affordable Housing Program assessments 3,697 3,727 30 Net income $ 33,141 $ 33,408 $ 267 Statements of Comprehensive Income: Net income $ 33,141 $ 33,408 $ 267 Total comprehensive income $ 42,205 $ 42,472 $ 267 As of and for the Six Months Ended June 30, 2014 Previous Method New Method Effect of Change Statements of Condition: Mortgage loans held for portfolio, net $ 6,251,472 $ 6,230,400 $ (21,072 ) Total assets 39,055,075 39,034,003 (21,072 ) Affordable Housing Program payable 43,351 43,462 111 Total liabilities 36,559,574 36,559,685 111 Unrestricted retained earnings 682,872 664,776 (18,096 ) Restricted retained earnings 98,797 95,710 (3,087 ) Total retained earnings 781,669 760,486 (21,183 ) Total capital 2,495,501 2,474,318 (21,183 ) Total liabilities and capital $ 39,055,075 $ 39,034,003 $ (21,072 ) Statements of Income: Interest income - mortgage loans held for portfolio $ 114,511 $ 115,616 $ 1,105 Net interest income after provision for credit losses 90,966 92,071 1,105 Income before assessments 74,306 75,411 1,105 Affordable Housing Program assessments 7,505 7,616 111 Net income $ 66,801 $ 67,795 $ 994 Statements of Comprehensive Income: Net income $ 66,801 $ 67,795 $ 994 Total comprehensive income $ 92,258 $ 93,252 $ 994 Statements of Capital: Total retained earnings, as of beginning of year $ 751,952 $ 729,775 $ (22,177 ) Total comprehensive income 92,258 93,252 994 Total retained earnings, as of end of period 781,669 760,486 (21,183 ) Total capital $ 2,495,501 $ 2,474,318 $ (21,183 ) Statements of Cash Flows: Operating activities: Net income $ 66,801 $ 67,795 $ 994 Adjustments to reconcile net income to net cash provided by operating activities: Amortization and depreciation 14,211 13,106 (1,105 ) Changes in: Other liabilities 6,972 7,083 111 Total adjustments, net 55,572 54,578 (994 ) Net cash provided by operating activities $ 122,373 $ 122,373 $ —

Available-for-Sale Securities (

Available-for-Sale Securities (Tables)	6 Months Ended
	Jun. 30, 2015
Available-for-sale Securities [Line Items]
Available-for-Sale (AFS) Securities by Major Security Type	The following table presents information on our AFS securities by type of security. Gross Gross Amortized Non-Credit Unrealized Unrealized Estimated June 30, 2015 Cost (1) OTTI Gains Losses Fair Value GSE and TVA debentures $ 3,113,797 $ — $ 14,695 $ (739 ) $ 3,127,753 GSE MBS 77,736 — 718 — 78,454 Private-label RMBS 328,152 (201 ) 36,768 — 364,719 Total AFS securities $ 3,519,685 $ (201 ) $ 52,181 $ (739 ) $ 3,570,926 December 31, 2014 GSE and TVA debentures $ 3,139,037 $ — $ 17,430 $ (1,352 ) $ 3,155,115 Private-label RMBS 362,878 (127 ) 38,299 — 401,050 Total AFS securities $ 3,501,915 $ (127 ) $ 55,729 $ (1,352 ) $ 3,556,165 (1) Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses) and fair-value hedge accounting adjustments.
Available-for-sale Securities
Available-for-sale Securities [Line Items]
AFS Securities in a Continuous Unrealized Loss Position	The following table presents impaired AFS securities (i.e., in an unrealized loss position), aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. None of our GSE MBS were in an unrealized loss position at June 30, 2015 . Less than 12 months 12 months or more Total Estimated Unrealized Estimated Unrealized Estimated Unrealized June 30, 2015 Fair Value Losses Fair Value Losses Fair Value Losses GSE and TVA debentures $ 266,017 $ (739 ) $ — $ — $ 266,017 $ (739 ) Private-label RMBS — — 4,995 (201 ) 4,995 (201 ) Total impaired AFS securities $ 266,017 $ (739 ) $ 4,995 $ (201 ) $ 271,012 $ (940 ) December 31, 2014 GSE and TVA debentures $ 264,959 $ (1,352 ) $ — $ — $ 264,959 $ (1,352 ) Private-label RMBS — — 5,656 (127 ) 5,656 (127 ) Total impaired AFS securities $ 264,959 $ (1,352 ) $ 5,656 $ (127 ) $ 270,615 $ (1,479 )
AFS Securities by Contractual Maturity	The amortized cost and estimated fair value of non-MBS AFS securities by contractual maturity are presented below. MBS are not presented by contractual maturity because their actual maturities will likely differ from contractual maturities as borrowers have the right to prepay their obligations with or without prepayment fees. June 30, 2015 December 31, 2014 Amortized Estimated Amortized Estimated Year of Contractual Maturity Cost Fair Value Cost Fair Value Due in one year or less $ 207,315 $ 207,905 $ — $ — Due after one year through five years 2,252,418 2,262,091 2,484,379 2,497,034 Due after five years through ten years 654,064 657,757 654,658 658,081 Total non-MBS 3,113,797 3,127,753 3,139,037 3,155,115 Total MBS 405,888 443,173 362,878 401,050 Total AFS securities $ 3,519,685 $ 3,570,926 $ 3,501,915 $ 3,556,165

Held-to-Maturity Securities (Ta

Held-to-Maturity Securities (Tables)	6 Months Ended
	Jun. 30, 2015
Schedule of Held-to-maturity Securities [Line Items]
HTM Securities by Major Security Type	The following table presents information on our HTM securities by type of security. Gross Gross Unrecognized Unrecognized Amortized Non-Credit Carrying Holding Holding Estimated June 30, 2015 Cost (1) OTTI Value Gains Losses Fair Value GSE debentures $ 100,000 $ — $ 100,000 $ 111 $ — $ 100,111 MBS and ABS: Other U.S. obligations -guaranteed MBS 2,986,326 — 2,986,326 30,870 (2,097 ) 3,015,099 GSE MBS 3,296,309 — 3,296,309 82,921 (713 ) 3,378,517 Private-label RMBS 86,549 — 86,549 418 (957 ) 86,010 Manufactured housing loan ABS 10,394 — 10,394 — (1,010 ) 9,384 Home equity loan ABS 1,575 (151 ) 1,424 76 (46 ) 1,454 Total MBS and ABS 6,381,153 (151 ) 6,381,002 114,285 (4,823 ) 6,490,464 Total HTM securities $ 6,481,153 $ (151 ) $ 6,481,002 $ 114,396 $ (4,823 ) $ 6,590,575 December 31, 2014 GSE debentures $ 269,000 $ — $ 269,000 $ 199 $ — $ 269,199 MBS and ABS: Other U.S. obligations -guaranteed MBS 3,032,494 — 3,032,494 30,598 (5,959 ) 3,057,133 GSE MBS 3,567,958 — 3,567,958 93,583 (104 ) 3,661,437 Private-label RMBS 99,879 — 99,879 360 (1,049 ) 99,190 Manufactured housing loan ABS 11,243 — 11,243 — (1,164 ) 10,079 Home equity loan ABS 1,716 (175 ) 1,541 114 (77 ) 1,578 Total MBS and ABS 6,713,290 (175 ) 6,713,115 124,655 (8,353 ) 6,829,417 Total HTM securities $ 6,982,290 $ (175 ) $ 6,982,115 $ 124,854 $ (8,353 ) $ 7,098,616 (1) Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses).
HTM Securities
Schedule of Held-to-maturity Securities [Line Items]
HTM Securities in a Continuous Unrealized Loss Position	The following table presents impaired HTM securities (i.e., in an unrealized loss position), aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. None of our non-MBS were in an unrealized loss position at June 30, 2015 or December 31, 2014 . Less than 12 months 12 months or more Total Estimated Unrealized Estimated Unrealized Estimated Unrealized June 30, 2015 Fair Value Losses Fair Value Losses Fair Value Losses (1) MBS and ABS: Other U.S. obligations - guaranteed MBS $ 71,333 $ (69 ) $ 642,368 $ (2,028 ) $ 713,701 $ (2,097 ) GSE MBS 549,432 (713 ) — — 549,432 (713 ) Private-label RMBS 8,632 (30 ) 37,448 (927 ) 46,080 (957 ) Manufactured housing loan ABS — — 9,384 (1,010 ) 9,384 (1,010 ) Home equity loan ABS — — 1,454 (121 ) 1,454 (121 ) Total MBS and ABS 629,397 (812 ) 690,654 (4,086 ) 1,320,051 (4,898 ) Total impaired HTM securities $ 629,397 $ (812 ) $ 690,654 $ (4,086 ) $ 1,320,051 $ (4,898 ) December 31, 2014 MBS and ABS: Other U.S. obligations - guaranteed MBS $ 528,242 $ (1,254 ) $ 702,768 $ (4,705 ) $ 1,231,010 $ (5,959 ) GSE MBS 31,554 (8 ) 26,013 (96 ) 57,567 (104 ) Private-label RMBS 3,274 (3 ) 41,050 (1,046 ) 44,324 (1,049 ) Manufactured housing loan ABS — — 10,080 (1,164 ) 10,080 (1,164 ) Home equity loan ABS — — 1,579 (138 ) 1,579 (138 ) Total MBS and ABS 563,070 (1,265 ) 781,490 (7,149 ) 1,344,560 (8,414 ) Total impaired HTM securities $ 563,070 $ (1,265 ) $ 781,490 $ (7,149 ) $ 1,344,560 $ (8,414 ) (1) For home equity loan ABS, total unrealized losses does not agree to total gross unrecognized holding losses at June 30, 2015 and December 31, 2014 of $(46) and $(77) , respectively. Total unrealized losses include non-credit-related OTTI losses recorded in AOCI of $(151) and $(175) , respectively, and gross unrecognized holding gains on previously OTTI securities of $76 and $114 , respectively.
HTM Securities by Contractual Maturity	The amortized cost, carrying value and estimated fair value of non-MBS HTM securities by contractual maturity are presented below. MBS and ABS are not presented by contractual maturity because their actual maturities will likely differ from contractual maturities as certain borrowers have the right to prepay their obligations with or without prepayment fees. June 30, 2015 December 31, 2014 Amortized Carrying Estimated Amortized Carrying Estimated Year of Contractual Maturity Cost (1) Value (2) Fair Value Cost (1) Value (2) Fair Value Non-MBS: Due in one year or less $ 100,000 $ 100,000 $ 100,111 $ 169,000 $ 169,000 $ 169,099 Due after one year through five years — — — 100,000 100,000 100,100 Total non-MBS 100,000 100,000 100,111 269,000 269,000 269,199 Total MBS and ABS 6,381,153 6,381,002 6,490,464 6,713,290 6,713,115 6,829,417 Total HTM securities $ 6,481,153 $ 6,481,002 $ 6,590,575 $ 6,982,290 $ 6,982,115 $ 7,098,616 (1) Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses). (2) Represents amortized cost after adjustment for non-credit OTTI recognized in AOCI.

Other-Than-Temporary Impairme30

Other-Than-Temporary Impairment (Tables)	6 Months Ended
	Jun. 30, 2015
Other Than Temporary Impairments Analysis [Abstract]
Rollforward of the Amounts Related to Credit Losses Recognized into Earnings	The following table presents a rollforward of the amounts related to credit losses recognized in earnings. The rollforward excludes accretion of credit losses for securities that have not experienced a significant increase in cash flows. Three Months Ended Six Months Ended June 30, June 30, Credit Loss Rollforward 2015 2014 2015 2014 Balance at beginning of period $ 68,374 $ 72,457 $ 69,626 $ 72,287 Additions: Additional credit losses for which OTTI was previously recognized (1) 32 58 32 228 Reductions: Increases in cash flows expected to be collected (accreted as interest income over the remaining lives of the applicable securities) (2,357 ) (931 ) (3,609 ) (931 ) Balance at end of period $ 66,049 $ 71,584 $ 66,049 $ 71,584 (1) For the three and six months ended June 30, 2015 and 2014 , the amount relates to one security originally impaired prior to January 1, 2014 .
Total Securities Other-than-Temporarily Impaired during the Life of the Security	The following table presents the June 30, 2015 classification and balances of OTTI securities impaired prior to that date (i.e., life-to-date) but not necessarily as of that date. Securities are classified based on the originator's classification at the time of origination or based on the classification by the NRSROs upon issuance. Because there is no universally accepted definition of prime, Alt-A or subprime underwriting standards, such classifications are subjective. June 30, 2015 HTM Securities AFS Securities OTTI Life-to-Date UPB Amortized Cost Carrying Value Estimated Fair Value UPB Amortized Cost Estimated Fair Value Private-label RMBS - prime $ — $ — $ — $ — $ 386,909 $ 328,152 $ 364,719 Home equity loan ABS - subprime 707 677 527 602 — — — Total $ 707 $ 677 $ 527 $ 602 $ 386,909 $ 328,152 $ 364,719

Advances (Tables)

Advances (Tables)	6 Months Ended
	Jun. 30, 2015
Advances [Abstract]
Summary of Advances Redemption Terms	We had advances outstanding, as presented below by year of contractual maturity, with current interest rates ranging from 0% to 7.53% . June 30, 2015 December 31, 2014 Year of Contractual Maturity Amount WAIR % Amount WAIR % Overdrawn demand and overnight deposit accounts $ 1,200 2.44 $ — — Due in 1 year or less 10,014,629 0.70 7,406,652 0.83 Due after 1 year through 2 years 2,521,285 1.24 2,529,649 1.28 Due after 2 years through 3 years 2,765,255 1.90 2,331,427 1.57 Due after 3 years through 4 years 1,496,916 2.04 2,047,262 2.05 Due after 4 years through 5 years 2,539,194 1.55 1,571,567 2.51 Thereafter 4,846,986 1.42 4,743,645 1.31 Total advances, par value 24,185,465 1.21 20,630,202 1.33 Fair-value hedging adjustments 95,336 117,118 Unamortized swap termination fees associated with modified advances, net of deferred prepayment fees 37,556 42,347 Total advances $ 24,318,357 $ 20,789,667
Advances by Year of Contractual Maturity, Next Call Date, or Next Put or Convert Date	The following table presents advances by the earlier of the year of contractual maturity or the next call date and next put date. Year of Contractual Maturity or Next Call Date Year of Contractual Maturity or Next Put Date June 30, December 31, June 30, December 31, Overdrawn demand and overnight deposit accounts $ 1,200 $ — $ 1,200 $ — Due in 1 year or less 14,245,409 11,293,767 10,296,129 7,574,152 Due after 1 year through 2 years 2,722,535 2,533,649 2,468,785 2,499,649 Due after 2 years through 3 years 2,679,090 2,208,677 2,684,255 2,233,927 Due after 3 years through 4 years 1,271,916 1,847,262 1,486,916 2,012,262 Due after 4 years through 5 years 1,704,194 1,506,567 2,441,194 1,566,567 Thereafter 1,561,121 1,240,280 4,806,986 4,743,645 Total advances, par value $ 24,185,465 $ 20,630,202 $ 24,185,465 $ 20,630,202

Mortgage Loans Held for Portf32

Mortgage Loans Held for Portfolio (Tables)	6 Months Ended
	Jun. 30, 2015
Mortgage Loans on Real Estate [Abstract]
Mortgage Loans Held for Portfolio by Term	The following tables present information on mortgage loans held for portfolio by term and by type. June 30, 2015 Term MPP MPF Total Fixed-rate long-term mortgages $ 6,211,191 $ 401,909 $ 6,613,100 Fixed-rate medium-term (1) mortgages 1,093,826 72,872 1,166,698 Total mortgage loans held for portfolio, UPB 7,305,017 474,781 7,779,798 Unamortized premiums 147,141 8,001 155,142 Unamortized discounts (3,790 ) (286 ) (4,076 ) Fair-value hedging adjustments 3,663 (453 ) 3,210 Allowance for loan losses (1,200 ) (150 ) (1,350 ) Total mortgage loans held for portfolio, net $ 7,450,831 $ 481,893 $ 7,932,724 December 31, 2014 Term MPP MPF Total Fixed-rate long-term mortgages $ 5,233,682 $ 428,758 $ 5,662,440 Fixed-rate medium-term (1) mortgages 963,083 78,919 1,042,002 Total mortgage loans held for portfolio, UPB 6,196,765 507,677 6,704,442 Unamortized premiums 107,876 8,726 116,602 Unamortized discounts (1,874 ) (302 ) (2,176 ) Fair-value hedging adjustments 4,369 (475 ) 3,894 Allowance for loan losses (2,250 ) (250 ) (2,500 ) Total mortgage loans held for portfolio, net $ 6,304,886 $ 515,376 $ 6,820,262 (1) Defined as a term of 15 years or less at origination.
Mortgage Loans Held for Portfolio by Collateral/Guarantee Type	June 30, 2015 Type MPP MPF Total Conventional $ 6,731,081 $ 379,966 $ 7,111,047 Government 573,936 94,815 668,751 Total mortgage loans held for portfolio, UPB $ 7,305,017 $ 474,781 $ 7,779,798 December 31, 2014 Type MPP MPF Total Conventional $ 5,562,460 $ 406,469 $ 5,968,929 Government 634,305 101,208 735,513 Total mortgage loans held for portfolio, UPB $ 6,196,765 $ 507,677 $ 6,704,442

Allowance for Credit Losses (Ta

Allowance for Credit Losses (Tables)	6 Months Ended
	Jun. 30, 2015
Allowance for Credit Losses [Abstract]
Impact of MPP Risk Sharing Structure on Allowance for Credit Losses	The following table presents the estimated impact of credit enhancements on the allowance. MPP Credit Waterfall June 30, 2015 December 31, 2014 Estimated losses remaining after borrower's equity, before credit enhancements $ 12,007 $ 25,232 Portion of estimated losses recoverable from PMI (2,361 ) (3,301 ) Portion of estimated losses recoverable from LRA (1) (1,513 ) (5,334 ) Portion of estimated losses recoverable from SMI (7,072 ) (14,587 ) Allowance for unrecoverable PMI/SMI 139 240 Allowance for MPP loan losses $ 1,200 $ 2,250 (1) Amounts recoverable limited to (i) estimated losses remaining after borrower's equity and PMI and (ii) the remaining balance in each pool's portion of the LRA. The remainder of the LRA is available to cover any losses not yet incurred and to distribute any excess funds to members.
Changes in Lender Risk Account	The following table presents the actual activity in the LRA. Three Months Ended June 30, Six Months Ended June 30, LRA Activity 2015 2014 2015 2014 Balance of LRA, beginning of period $ 72,178 $ 46,958 $ 61,949 $ 45,330 Additions 10,959 3,684 21,508 6,110 Claims paid (361 ) (617 ) (547 ) (1,253 ) Distributions (152 ) (107 ) (286 ) (269 ) Balance of LRA, end of period $ 82,624 $ 49,918 $ 82,624 $ 49,918
Rollforward of Allowance for Credit Losses on Mortgage Loans	The tables below present a rollforward of our allowance for loan losses, the allowance for loan losses by impairment methodology, and the recorded investment in mortgage loans by impairment methodology. MPP MPF Rollforward of Allowance Conventional Conventional Total Allowance for loan losses, March 31, 2015 $ 2,000 $ 250 $ 2,250 Charge-offs, net of recoveries 53 (2 ) 51 Provision for (reversal of) loan losses (853 ) (98 ) (951 ) Allowance for loan losses, June 30, 2015 $ 1,200 $ 150 $ 1,350 Allowance for loan losses, March 31, 2014 $ 3,000 $ 500 $ 3,500 Charge-offs, net of recoveries (164 ) — (164 ) Provision for (reversal of) loan losses 164 (250 ) (86 ) Allowance for loan losses, June 30, 2014 $ 3,000 $ 250 $ 3,250 Allowance for loan losses, December 31, 2014 $ 2,250 $ 250 $ 2,500 Charge-offs, net of recoveries (760 ) (2 ) (762 ) Provision for (reversal of) loan losses (290 ) (98 ) (388 ) Allowance for loan losses, June 30, 2015 $ 1,200 $ 150 $ 1,350 Allowance for loan losses, December 31, 2013 $ 4,000 $ 500 $ 4,500 Charge-offs, net of recoveries (451 ) (9 ) (460 ) Provision for (reversal of) loan losses (549 ) (241 ) (790 ) Allowance for loan losses, June 30, 2014 $ 3,000 $ 250 $ 3,250
Allowance for Credit Losses and Recorded Investment by Impairment Methodology	Allowance for Loan Losses, June 30, 2015 Loans collectively evaluated for impairment $ 1,103 $ 150 $ 1,253 Loans individually evaluated for impairment (1) 97 — 97 Total allowance for loan losses $ 1,200 $ 150 $ 1,350 Allowance for Loan Losses, December 31, 2014 Loans collectively evaluated for impairment $ 1,776 $ 250 $ 2,026 Loans individually evaluated for impairment (1) 474 — 474 Total allowance for loan losses $ 2,250 $ 250 $ 2,500 Recorded Investment, June 30, 2015 Loans collectively evaluated for impairment $ 6,879,585 $ 388,243 $ 7,267,828 Loans individually evaluated for impairment (1) 19,334 — 19,334 Total recorded investment $ 6,898,919 $ 388,243 $ 7,287,162 Recorded Investment, December 31, 2014 Loans collectively evaluated for impairment $ 5,667,524 $ 415,569 $ 6,083,093 Loans individually evaluated for impairment (1) 19,889 — 19,889 Total recorded investment $ 5,687,413 $ 415,569 $ 6,102,982 (1) The recorded investment in our MPP conventional loans individually evaluated for impairment excludes principal that was previously paid in full by the servicers as of June 30, 2015 and December 31, 2014 of $4,001 and $5,519 , respectively, that remains subject to potential claims by those servicers for any losses resulting from past or future liquidations of the underlying properties. However, the MPP allowance for loan losses includes $30 and $153 for these potential claims as of June 30, 2015 and December 31, 2014 , respectively.
Recorded Investment in Delinquent Mortgage Loans	The tables below present our key credit quality indicators for mortgage loans held for portfolio. Mortgage Loans Held for Portfolio June 30, 2015 MPP MPF Conventional FHA Conventional Government Total Past due 30-59 days $ 46,989 $ 16,628 $ 627 $ 1,205 $ 65,449 Past due 60-89 days 12,140 4,733 1 478 17,352 Past due 90 days or more 38,810 2,613 175 188 41,786 Total past due 97,939 23,974 803 1,871 124,587 Total current 6,800,980 560,002 387,440 94,259 7,842,681 Total mortgage loans, recorded investment 6,898,919 583,976 388,243 96,130 7,967,268 Net unamortized premiums (135,331 ) (8,020 ) (6,746 ) (969 ) (151,066 ) Fair-value hedging adjustments (3,619 ) (44 ) 390 63 (3,210 ) Accrued interest receivable (28,888 ) (1,976 ) (1,921 ) (409 ) (33,194 ) Total mortgage loans held for portfolio, UPB $ 6,731,081 $ 573,936 $ 379,966 $ 94,815 $ 7,779,798 Other Delinquency Statistics June 30, 2015 In process of foreclosure (1) $ 26,752 $ — $ — $ — $ 26,752 Serious delinquency rate (2) 0.56 % 0.45 % 0.05 % 0.20 % 0.52 % Past due 90 days or more still accruing interest (3) $ 31,998 $ 2,613 $ — $ 188 $ 34,799 On non-accrual status 8,125 — 335 — 8,460 Mortgage Loans Held for Portfolio December 31, 2014 MPP MPF Conventional FHA Conventional Government Total Past due 30-59 days $ 59,365 $ 25,954 $ 1,011 $ 1,287 $ 87,617 Past due 60-89 days 14,879 6,010 252 657 21,798 Past due 90 days or more 49,128 3,636 1 483 53,248 Total past due 123,372 35,600 1,264 2,427 162,663 Total current 5,564,041 609,711 414,305 100,184 6,688,241 Total mortgage loans, recorded investment 5,687,413 645,311 415,569 102,611 6,850,904 Net unamortized premiums (97,411 ) (8,591 ) (7,400 ) (1,024 ) (114,426 ) Fair-value hedging adjustments (4,323 ) (45 ) 417 57 (3,894 ) Accrued interest receivable (23,219 ) (2,370 ) (2,117 ) (436 ) (28,142 ) Total mortgage loans held for portfolio, UPB $ 5,562,460 $ 634,305 $ 406,469 $ 101,208 $ 6,704,442 Other Delinquency Statistics December 31, 2014 In process of foreclosure (1) $ 32,369 $ — $ — $ — $ 32,369 Serious delinquency rate (2) 0.86 % 0.56 % — % 0.47 % 0.78 % Past due 90 days or more still accruing interest (3) $ 46,341 $ 3,636 $ — $ 483 $ 50,460 On non-accrual status 7,207 — 1 — 7,208 (1) Includes loans for which the decision of foreclosure or similar alternative, such as pursuit of deed-in-lieu of foreclosure, has been reported. Loans in process of foreclosure are included in past due categories depending on their delinquency status. (2) Represents loans 90 days or more past due (including loans in process of foreclosure) expressed as a percentage of the total recorded investment in mortgage loans. The percentage excludes principal and interest amounts that were previously paid in full by the servicers on conventional loans that are pending resolution of potential loss claims. Many government, including FHA, loans are repurchased by the servicers when they reach 90 days or more delinquent status, similar to the rules for servicers of Ginnie Mae MBS, resulting in the lower serious delinquency rate for government loans. (3) Although our past due scheduled/scheduled MPP loans are classified as loans past due 90 days or more based on the mortgagor's payment status, we do not consider these loans to be non-accrual.
Performing and Non-performing Troubled Debt Restructurings	The table below presents the recorded investment of the performing and non-performing TDRs. Non-performing represents loans on non-accrual status only. June 30, 2015 December 31, 2014 Recorded Investment Performing Non-Performing Total Performing Non-Performing Total MPP conventional loans $ 17,173 $ 2,161 $ 19,334 $ 13,744 $ 6,145 $ 19,889
Individually Evaluated Impaired Loan Statistics by Product Class Level	The first table presents the recorded investment, UPB and related allowance associated with these loans, while the next table presents the average recorded investment of individually impaired loans and related interest income recognized. June 30, 2015 December 31, 2014 Individually Evaluated Impaired Loans Recorded Investment UPB Related Allowance for Loan Losses Recorded Investment UPB Related Allowance for Loan Losses MPP conventional loans without allowance for loan losses (1) $ 18,215 $ 18,069 $ — $ 13,744 $ 13,647 $ — MPP conventional loans with allowance for loan losses 1,119 1,128 67 6,145 6,099 321 Total $ 19,334 $ 19,197 $ 67 $ 19,889 $ 19,746 $ 321 (1) No allowance for loan losses was recorded on these impaired loans after consideration of the underlying loan-specific attribute data, estimated liquidation value of real estate collateral held, estimated costs associated with maintaining and disposing of the collateral, and credit enhancements.
Average Recorded Investment and Interest Income on Impaired Loans	Three Months Ended Three Months Ended June 30, 2015 June 30, 2014 Individually Evaluated Impaired Loans Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized MPP conventional loans without allowance for loan losses $ 18,446 $ 232 $ 18,540 $ 275 MPP conventional loans with allowance for loan losses 1,133 15 948 14 Total $ 19,579 $ 247 $ 19,488 $ 289 Six Months Ended Six Months Ended June 30, 2015 June 30, 2014 Individually Evaluated Impaired Loans Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized MPP conventional loans without allowance for loan losses $ 18,543 $ 455 $ 18,161 $ 530 MPP conventional loans with allowance for loan losses 1,139 79 950 30 Total $ 19,682 $ 534 $ 19,111 $ 560

Derivative and Hedging Activi34

Derivative and Hedging Activities (Tables)	6 Months Ended
	Jun. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Instruments	The following table presents the notional amount and estimated fair value of derivative instruments, including the effect of netting adjustments, cash collateral, and the related accrued interest. Notional Estimated Fair Value Estimated Fair Value Amount of of Derivative of Derivative June 30, 2015 Derivatives Assets Liabilities Derivatives designated as hedging instruments: Interest-rate swaps $ 30,595,463 $ 57,482 $ 275,072 Total derivatives designated as hedging instruments 30,595,463 57,482 275,072 Derivatives not designated as hedging instruments: Interest-rate swaps 341,717 301 111 Interest-rate caps/floors 340,500 161 — Interest-rate forwards 175,500 179 33 MDCs 174,189 223 467 Total derivatives not designated as hedging instruments 1,031,906 864 611 Total derivatives before adjustments $ 31,627,369 58,346 275,683 Netting adjustments and cash collateral (1) (16,583 ) (180,049 ) Total derivatives, net $ 41,763 $ 95,634 December 31, 2014 Derivatives designated as hedging instruments: Interest-rate swaps $ 27,527,697 $ 55,095 $ 331,546 Total derivatives designated as hedging instruments 27,527,697 55,095 331,546 Derivatives not designated as hedging instruments: Interest-rate swaps 1,476,365 330 735 Interest-rate caps/floors 340,500 312 — Interest-rate forwards 252,100 — 1,631 MDCs 252,418 711 6 Total derivatives not designated as hedging instruments 2,321,383 1,353 2,372 Total derivatives before adjustments $ 29,849,080 56,448 333,918 Netting adjustments and cash collateral (1) (30,961 ) (230,665 ) Total derivatives, net $ 25,487 $ 103,253 (1) Represents the application of the netting requirements that allow us to settle (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty. Cash collateral placed at June 30, 2015 and December 31, 2014 was $165,007 and $201,284 , respectively. Cash collateral held at June 30, 2015 and December 31, 2014 was $1,540 and $1,580 , respectively.
Offsetting of Derivative Assets and Derivative Liabilities	The following table presents separately the estimated fair value of derivative instruments meeting and not meeting netting requirements, including the related collateral received from or pledged to counterparties. June 30, 2015 December 31, 2014 Derivative Assets Derivative Liabilities Derivative Assets Derivative Liabilities Derivative instruments meeting netting requirements: Gross recognized amount Bilateral $ 34,252 $ 245,816 $ 48,532 $ 308,041 Cleared 23,692 29,367 7,205 24,240 Total gross recognized amount 57,944 275,183 55,737 332,281 Gross amounts of netting adjustments and cash collateral Bilateral (33,871 ) (150,682 ) (48,389 ) (206,425 ) Cleared 17,288 (29,367 ) 17,428 (24,240 ) Total gross amounts of netting adjustments and cash collateral (16,583 ) (180,049 ) (30,961 ) (230,665 ) Net amounts after netting adjustments and cash collateral Bilateral 381 95,134 143 101,616 Cleared 40,980 — 24,633 — Total net amounts after netting adjustments and cash collateral 41,361 95,134 24,776 101,616 Derivative instruments not meeting netting requirements (1) 402 500 711 1,637 Total derivatives, at estimated fair value $ 41,763 $ 95,634 $ 25,487 $ 103,253 (1) Includes MDCs and certain interest-rate forwards.
Components of Net Gains (Losses) on Derivatives and Hedging Activities	The following table presents the components of net gains (losses) on derivatives and hedging activities reported in other income (loss). Three Months Ended June 30, Six Months Ended June 30, Type of Hedge 2015 2014 2015 2014 Net gain (loss) related to fair-value hedge ineffectiveness: Interest-rate swaps $ 6,332 $ (2,908 ) $ 6,441 $ (3,519 ) Total net gain (loss) related to fair-value hedge ineffectiveness 6,332 (2,908 ) 6,441 (3,519 ) Net gain (loss) on derivatives not designated as hedging instruments: Economic hedges: Interest-rate swaps 1,660 4,428 865 5,771 Interest-rate caps/floors (45 ) (413 ) (151 ) (875 ) Interest-rate forwards 1,973 (2,700 ) (1,348 ) (3,425 ) Net interest settlements 201 2,715 492 5,440 MDCs (2,858 ) 2,016 (916 ) 2,714 Total net gain (loss) on derivatives not designated as hedging instruments 931 6,046 (1,058 ) 9,625 Net gains (losses) on derivatives and hedging activities $ 7,263 $ 3,138 $ 5,383 $ 6,106
Effect of Fair Value Hedge-Related Derivative Instruments	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 net interest income. Gain (Loss) Gain (Loss) Net Fair- Effect on on on Hedged Value Hedge Net Interest Three Months Ended June 30, 2015 Derivative Item Ineffectiveness Income (1) Advances $ 47,732 $ (44,213 ) $ 3,519 $ (39,242 ) AFS securities 31,739 (32,147 ) (408 ) (24,303 ) CO bonds (4,823 ) 8,044 3,221 14,645 Total $ 74,648 $ (68,316 ) $ 6,332 $ (48,900 ) Three Months Ended June 30, 2014 Advances $ (19,830 ) $ 19,172 $ (658 ) $ (36,883 ) AFS securities (9,093 ) 9,041 (52 ) (24,526 ) CO bonds 29,316 (31,514 ) (2,198 ) 19,563 Total $ 393 $ (3,301 ) $ (2,908 ) $ (41,846 ) Six Months Ended June 30, 2015 Advances $ 10,780 $ (8,508 ) $ 2,272 $ (78,669 ) AFS securities 20,841 (21,828 ) (987 ) (48,732 ) CO Bonds 10,237 (5,081 ) 5,156 31,241 Total $ 41,858 $ (35,417 ) $ 6,441 $ (96,160 ) Six Months Ended June 30, 2014 Advances $ (21,133 ) $ 21,580 $ 447 $ (73,283 ) AFS securities (7,859 ) 7,981 122 (49,021 ) CO Bonds 53,988 (58,076 ) (4,088 ) 38,187 Total $ 24,996 $ (28,515 ) $ (3,519 ) $ (84,117 ) (1) Includes the effect of derivatives in fair-value hedging relationships on net interest income that is recorded in the interest income/expense line item of the respective hedged items. Excludes the interest income/expense of the respective hedged items, which fully offset the interest income/expense of the derivatives, except to the extent of any hedge ineffectiveness. Net interest settlements on derivatives that are not in fair-value hedging relationships are reported in other income (loss).

Consolidated Obligations (Table

Consolidated Obligations (Tables)	6 Months Ended
	Jun. 30, 2015
Debt Disclosure [Abstract]
Discount Notes	The following table presents our participation in discount notes outstanding, all of which are due within one year of issuance. Discount Notes June 30, December 31, Book value $ 11,802,629 $ 12,567,696 Par value 11,807,026 12,570,811 Weighted average effective interest rate 0.14 % 0.12 %
CO Bonds by Year of Contractual Maturity	The following table presents our participation in CO bonds outstanding by contractual maturity. June 30, 2015 December 31, 2014 Year of Contractual Maturity Amount WAIR% Amount WAIR% Due in 1 year or less $ 14,715,220 0.36 $ 11,695,550 0.33 Due after 1 year through 2 years 3,828,220 0.94 2,018,510 1.49 Due after 2 years through 3 years 2,326,710 1.81 2,158,950 1.76 Due after 3 years through 4 years 1,104,850 2.42 1,934,100 1.49 Due after 4 years through 5 years 1,796,625 2.67 999,700 2.51 Thereafter 5,860,950 3.19 6,692,000 3.11 Total CO bonds, par value 29,632,575 1.32 25,498,810 1.44 Unamortized premiums 29,901 27,138 Unamortized discounts (14,083 ) (14,913 ) Fair-value hedging adjustments (793 ) (7,897 ) Total CO bonds $ 29,647,600 $ 25,503,138
CO Bonds by Redemption Feature	The following tables present our participation in CO bonds outstanding by redemption feature and contractual maturity or next call date. Redemption Feature June 30, December 31, Non-callable / non-putable $ 22,281,575 $ 17,253,810 Callable 7,351,000 8,245,000 Total CO bonds, par value $ 29,632,575 $ 25,498,810
CO Bonds by Contractual Maturity or Next Call Date	Year of Contractual Maturity or Next Call Date Due in 1 year or less $ 21,933,220 $ 19,918,550 Due after 1 year through 2 years 3,230,220 1,651,510 Due after 2 years through 3 years 1,274,710 883,950 Due after 3 years through 4 years 677,850 461,100 Due after 4 years through 5 years 1,149,625 543,700 Thereafter 1,366,950 2,040,000 Total CO bonds, par value $ 29,632,575 $ 25,498,810

Affordable Housing Program (Tab

Affordable Housing Program (Tables)	6 Months Ended
	Jun. 30, 2015
Affordable Housing Program [Abstract]
Schedule of Activity in Affordable Housing Program Obligation	The following table summarizes the activity in our AHP funding obligation. Three Months Ended June 30, Six Months Ended June 30, AHP Activity 2015 2014 2015 2014 Balance at beginning of period $ 35,759 $ 43,211 $ 36,899 $ 42,778 Assessment (expense) 3,801 3,727 7,217 7,616 Subsidy usage, net (1) (4,440 ) (3,476 ) (8,996 ) (6,932 ) Balance at end of period $ 35,120 $ 43,462 $ 35,120 $ 43,462 (1) Subsidies disbursed are reported net of returns/recaptures of previously disbursed subsidies.

Capital (Tables)

Capital (Tables)	6 Months Ended
	Jun. 30, 2015
Capital [Abstract]
Schedule of Compliance with Regulatory Capital Requirements under Banking Regulations	As presented in the following table, we were in compliance with the Finance Agency's capital requirements at June 30, 2015 and December 31, 2014 . For regulatory purposes, AOCI is not considered capital; MRCS, however, is considered capital. June 30, 2015 December 31, 2014 Regulatory Capital Requirements Required Actual Required Actual Risk-based capital $ 555,561 $ 2,212,501 $ 566,683 $ 2,344,283 Regulatory permanent capital-to-asset ratio 4.00 % 4.89 % 4.00 % 5.60 % Regulatory permanent capital $ 1,809,461 $ 2,212,501 $ 1,674,121 $ 2,344,283 Leverage ratio 5.00 % 7.34 % 5.00 % 8.40 % Leverage capital $ 2,261,826 $ 3,318,752 $ 2,092,652 $ 3,516,425
MRCS Activity	The following tables present the activity in MRCS and distributions on MRCS. Three Months Ended June 30, Six Months Ended June 30, MRCS Activity 2015 2014 2015 2014 Liability at beginning of period $ 15,553 $ 16,786 $ 15,673 $ 16,787 Redemptions/repurchases (1,212 ) (1 ) (1,332 ) (2 ) Liability at end of period $ 14,341 $ 16,785 $ 14,341 $ 16,785
Schedule of Distributions on Mandatorily Redeemable Capital Stock	Three Months Ended June 30, Six Months Ended June 30, MRCS Distributions 2015 2014 2015 2014 Recorded as interest expense $ 122 $ 135 $ 256 $ 745 Recorded as distributions from retained earnings — — — — Total $ 122 $ 135 $ 256 $ 745

Accumulated Other Comprehensi38

Accumulated Other Comprehensive Income (Tables)	6 Months Ended
	Jun. 30, 2015
Accumulated Other Comprehensive Income (Loss) [Abstract]
Schedule of Changes in the Components of AOCI	The following table presents a summary of the changes in the components of AOCI for the three and six months ended June 30, 2015 and 2014 . AOCI Rollforward Unrealized Gains on AFS Securities Non-Credit OTTI on AFS Securities Non-Credit OTTI on HTM Securities Pension Benefits Total AOCI Balance, March 31, 2014 $ 12,356 $ 30,141 $ (228 ) $ (4,156 ) $ 38,113 OCI before reclassifications: Net change in unrealized gains (losses) 538 8,619 — — 9,157 Net change in fair value — 38 — — 38 Accretion of non-credit losses — — 19 — 19 Reclassifications from OCI to net income: Non-credit portion of OTTI losses — 58 — — 58 Pension benefits, net — — — (208 ) (208 ) Total other comprehensive income (loss) 538 8,715 19 (208 ) 9,064 Balance, June 30, 2014 $ 12,894 $ 38,856 $ (209 ) $ (4,364 ) $ 47,177 Balance, March 31, 2015 $ 17,582 $ 35,814 $ (163 ) $ (7,167 ) $ 46,066 OCI before reclassifications: Net change in unrealized gains (losses) (2,908 ) 828 — — (2,080 ) Net change in fair value — (107 ) — — (107 ) Accretion of non-credit loss — — 12 — 12 Reclassifications from OCI to net income: Non-credit portion of OTTI losses — 32 — — 32 Pension benefits, net — — — (1,075 ) (1,075 ) Total other comprehensive income (loss) (2,908 ) 753 12 (1,075 ) (3,218 ) Balance, June 30, 2015 $ 14,674 $ 36,567 $ (151 ) $ (8,242 ) $ 42,848 AOCI Rollforward Unrealized Gains (Losses) on AFS Securities (Note 3) Non-Credit OTTI on AFS Securities (Notes 3 and 5) Non-Credit OTTI on HTM Securities (Notes 4 and 5) Pension Benefits Total AOCI Balance, December 31, 2013 $ 317 $ 25,936 $ (241 ) $ (4,292 ) $ 21,720 OCI before reclassifications: Net change in unrealized gains (losses) 12,577 12,873 — — 25,450 Net change in fair value — (181 ) — — (181 ) Accretion of non-credit loss — — 32 — 32 Reclassifications from OCI to net income: Non-credit portion of OTTI losses — 228 — — 228 Pension benefits, net — — — (72 ) (72 ) Total other comprehensive income (loss) 12,577 12,920 32 (72 ) 25,457 Balance, June 30, 2014 $ 12,894 $ 38,856 $ (209 ) $ (4,364 ) $ 47,177 Balance, December 31, 2014 $ 16,078 $ 38,172 $ (175 ) $ (7,415 ) $ 46,660 OCI before reclassifications: Net change in unrealized gains (losses) (1,404 ) (1,531 ) — — (2,935 ) Net change in fair value — (106 ) — — (106 ) Accretion of non-credit loss — — 24 — 24 Reclassifications from OCI to net income: Non-credit portion of OTTI losses — 32 — — 32 Pension benefits, net — — — (827 ) (827 ) Total other comprehensive income (loss) (1,404 ) (1,605 ) 24 (827 ) (3,812 ) Balance, June 30, 2015 $ 14,674 $ 36,567 $ (151 ) $ (8,242 ) $ 42,848

Segment Information (Tables)

Segment Information (Tables)	6 Months Ended
	Jun. 30, 2015
Segment Reporting [Abstract]
Financial Performance by Operating Segment	The following table presents our financial performance by operating segment. Three Months Ended June 30, 2015 Three Months Ended June 30, 2014 Traditional Mortgage Loans Total Traditional Mortgage Loans Total Net interest income $ 31,746 $ 15,552 $ 47,298 $ 27,954 $ 15,741 $ 43,695 Provision for (reversal of) credit losses — (951 ) (951 ) — (86 ) (86 ) Other income (loss) 8,800 (859 ) 7,941 10,583 (621 ) 9,962 Other expenses 15,575 2,729 18,304 14,461 2,147 16,608 Income before assessments 24,971 12,915 37,886 24,076 13,059 37,135 Affordable Housing Program assessments 2,510 1,291 3,801 2,421 1,306 3,727 Net income $ 22,461 $ 11,624 $ 34,085 $ 21,655 $ 11,753 $ 33,408 Six Months Ended June 30, 2015 Six Months Ended June 30, 2014 Traditional Mortgage Loans Total Traditional Mortgage Loans Total Net interest income $ 62,667 $ 33,370 $ 96,037 $ 58,952 $ 32,329 $ 91,281 Provision for (reversal of) credit losses — (388 ) (388 ) — (790 ) (790 ) Other income (loss) 13,664 (2,147 ) 11,517 16,466 (619 ) 15,847 Other expenses 30,672 5,359 36,031 28,243 4,264 32,507 Income before assessments 45,659 26,252 71,911 47,175 28,236 75,411 Affordable Housing Program assessments 4,592 2,625 7,217 4,792 2,824 7,616 Net income $ 41,067 $ 23,627 $ 64,694 $ 42,383 $ 25,412 $ 67,795
Schedule of Segment Assets by Segment	The following table presents asset balances by operating segment. By Date Traditional Mortgage Loans Total June 30, 2015 $ 37,303,793 $ 7,932,724 $ 45,236,517 December 31, 2014 35,032,770 6,820,262 41,853,032

Estimated Fair Values (Tables)

Estimated Fair Values (Tables)	6 Months Ended
	Jun. 30, 2015
Fair Value Disclosures [Abstract]
Fair Value, by Balance Sheet Grouping	The following tables present the carrying value and estimated fair value of each of our financial instruments. The total of the estimated fair values does not represent an estimate of our overall market value as a going concern, which would take into account, among other considerations, future business opportunities and the net profitability of assets and liabilities. June 30, 2015 Estimated Fair Value Carrying Netting Financial Instruments Value Total Level 1 Level 2 Level 3 Adjustment (1) Assets: Cash and due from banks $ 635,017 $ 635,017 $ 635,017 $ — $ — $ — Interest-bearing deposits 251 251 — 251 — — Securities Purchased Under Agreements to Resell 200,000 200,000 — 200,000 — — Federal funds sold 1,895,000 1,895,000 — 1,895,000 — — AFS securities 3,570,926 3,570,926 — 3,206,207 364,719 — HTM securities 6,481,002 6,590,575 — 6,493,727 96,848 — Advances 24,318,357 24,381,257 — 24,381,257 — — Mortgage loans held for portfolio, net 7,932,724 8,166,880 — 8,132,629 34,251 — Accrued interest receivable 86,971 86,971 — 86,971 — — Derivative assets, net 41,763 41,763 — 58,346 — (16,583 ) Grantor trust assets (included in other assets) 13,025 13,025 13,025 — — — Liabilities: Deposits 1,163,762 1,163,762 — 1,163,762 — — Consolidated Obligations: Discount notes 11,802,629 11,807,026 — 11,807,026 — — Bonds 29,647,600 29,971,732 — 29,971,732 — — Accrued interest payable 83,461 83,461 — 83,461 — — Derivative liabilities, net 95,634 95,634 — 275,683 — (180,049 ) MRCS 14,341 14,341 14,341 — — — December 31, 2014 Estimated Fair Value Carrying Netting Financial Instruments Value Total Level 1 Level 2 Level 3 Adjustment (1) Assets: Cash and due from banks $ 3,550,939 $ 3,550,939 $ 3,550,939 $ — $ — $ — Interest-bearing deposits 483 483 — 483 — — AFS securities 3,556,165 3,556,165 — 3,155,115 401,050 — HTM securities 6,982,115 7,098,616 — 6,987,768 110,848 — Advances 20,789,667 20,844,701 — 20,844,701 — — Mortgage loans held for portfolio, net 6,820,262 7,120,935 — 7,078,490 42,445 — Accrued interest receivable 82,866 82,866 — 82,866 — — Derivative assets, net 25,487 25,487 — 56,448 — (30,961 ) Grantor trust assets (included in other assets) 12,980 12,980 12,980 — — — Liabilities: Deposits 1,084,042 1,084,042 — 1,084,042 — — Consolidated Obligations: Discount notes 12,567,696 12,570,811 — 12,570,811 — — Bonds 25,503,138 25,882,934 — 25,882,934 — — Accrued interest payable 77,034 77,034 — 77,034 — — Derivative liabilities, net 103,253 103,253 — 333,918 — (230,665 ) MRCS 15,673 15,673 15,673 — — — (1) Represents the application of the netting requirements that allow the settlement of (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty.
Schedule of Fair Value, Assets and Liabilities Measured on Recurring Basis	The following tables present by level within the fair value hierarchy the estimated fair value of our financial assets and liabilities that are recorded at estimated fair value on a recurring or non-recurring basis on our statement of condition. We did not have any financial assets or liabilities recorded at estimated fair value on a non-recurring basis on our statement of condition as of December 31, 2014 . Netting June 30, 2015 Total Level 1 Level 2 Level 3 Adjustment (1) AFS securities: GSE and TVA debentures $ 3,127,753 $ — $ 3,127,753 $ — $ — GSE MBS 78,454 — 78,454 — — Private-label RMBS 364,719 — — 364,719 — Total AFS securities 3,570,926 — 3,206,207 364,719 — Derivative assets: Interest-rate related 41,361 — 57,944 — (16,583 ) Interest-rate forwards 179 — 179 — — MDCs 223 — 223 — — Total derivative assets, net 41,763 — 58,346 — (16,583 ) Grantor trust assets (included in other assets) 13,025 13,025 — — — Total assets at recurring estimated fair value $ 3,625,714 $ 13,025 $ 3,264,553 $ 364,719 $ (16,583 ) Derivative liabilities: Interest-rate related $ 95,134 $ — $ 275,183 $ — $ (180,049 ) Interest-rate forwards 33 — 33 — — MDCs 467 — 467 — — Total derivative liabilities, net 95,634 — 275,683 — (180,049 ) Total liabilities at recurring estimated fair value $ 95,634 $ — $ 275,683 $ — $ (180,049 ) Mortgage loans held for portfolio (2) $ 5,018 $ — $ — $ 5,018 Total assets at non-recurring estimated fair value $ 5,018 $ — $ — $ 5,018 $ — December 31, 2014 AFS securities: GSE and TVA debentures $ 3,155,115 $ — $ 3,155,115 $ — $ — Private-label RMBS 401,050 — — 401,050 — Total AFS securities 3,556,165 — 3,155,115 401,050 — Derivative assets: Interest-rate related 24,776 — 55,737 — (30,961 ) MDCs 711 — 711 — — Total derivative assets, net 25,487 — 56,448 — (30,961 ) Grantor trust assets (included in other assets) 12,980 12,980 — — — Total assets at recurring estimated fair value $ 3,594,632 $ 12,980 $ 3,211,563 $ 401,050 $ (30,961 ) Derivative liabilities: Interest-rate related $ 101,616 $ — $ 332,281 $ — $ (230,665 ) Interest-rate forwards 1,631 — 1,631 — — MDCs 6 — 6 — — Total derivative liabilities, net 103,253 — 333,918 — (230,665 ) Total liabilities at recurring estimated fair value $ 103,253 $ — $ 333,918 $ — $ (230,665 ) (1) Represents the application of the netting requirements that allow the settlement of (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty. (2) Amounts are as of the date the fair value adjustment was recorded during the six months ended June 30, 2015 .
Reconciliation of AFS Private-label RMBS Measured at Estimated Fair Value on a Recurring Basis using Level 3 Significant Inputs	The table below presents a rollforward of our AFS private-label RMBS measured at estimated fair value on a recurring basis using Level 3 significant inputs. The estimated fair values for the private-label RMBS were determined using a pricing source, such as a dealer quote or comparable security price, for which the significant unobservable inputs used to determine the price were not readily available. Three Months Ended June 30, Six Months Ended June 30, Level 3 Rollforward 2015 2014 2015 2014 Balance, beginning of period $ 380,835 $ 455,812 $ 401,050 $ 469,685 Total realized and unrealized gains (losses): Accretion of credit losses in interest income 2,242 853 3,361 874 Net gains (losses) on changes in fair value in other income (loss) (32 ) (58 ) (32 ) (228 ) Net change in fair value not in excess of cumulative non-credit losses in OCI (107 ) 38 (106 ) (181 ) Unrealized gains (losses) in OCI 828 8,619 (1,531 ) 12,873 Reclassification of non-credit portion in OCI to other income (loss) 32 58 32 228 Purchases, issuances, sales and settlements: Settlements (19,079 ) (22,610 ) (38,055 ) (40,539 ) Balance, end of period $ 364,719 $ 442,712 $ 364,719 $ 442,712 Net gains (losses) included in earnings attributable to changes in fair value relating to assets still held at end of period $ 2,210 $ 795 $ 3,329 $ 646

Commitments and Contingencies (

Commitments and Contingencies (Tables)	6 Months Ended
	Jun. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
Off-Balance Sheet Commitments	The following table presents our off-balance-sheet commitments at their notional amounts. June 30, 2015 Type of Commitment Expire within one year Expire after one year Total Letters of credit outstanding $ 43,944 $ 158,627 $ 202,571 Unused lines of credit (1) 994,593 — 994,593 Commitments to fund additional advances (2) 99,988 — 99,988 Commitments to fund or purchase mortgage loans (3) 174,189 — 174,189 Unsettled CO bonds, at par (4) 20,500 — 20,500 (1) Maximum line of credit amount per member is $50,000 . (2) Generally for periods up to six months. (3) Generally for periods up to 91 days. (4) Includes $15,000 hedged with associated interest-rate swaps.

Transactions with Related Par42

Transactions with Related Parties and Other Entities (Tables) - Directors' Financial Institutions	6 Months Ended
	Jun. 30, 2015
Related Party Transaction [Line Items]
Outstanding Balances and Balance as a Percent of Total Balance with Respect to Transactions with Related Parties	Transactions with Directors' Financial Institutions. The following table presents the outstanding balances with respect to transactions with directors' financial institutions and their balance as a percent of the total balance on our statement of condition. Capital stock and MRCS Advances Mortgage loans held for portfolio (1) Date Par value % of Total Par value % of Total UPB % of Total June 30, 2015 $ 27,128 2 % $ 258,526 1 % $ 176,920 2 % December 31, 2014 40,213 3 % 261,146 1 % 167,072 2 % (1) Represents UPB of mortgage loans purchased from directors' financial institutions.
Net Advances to (Repayments from) and Mortgage Loans Purchased from Related Parties	Three Months Ended Six Months Ended June 30, June 30, Transactions with Directors' Financial Institutions 2015 2014 2015 2014 Net advances (repayments) $ (2,258 ) $ (12,401 ) $ (2,620 ) $ (24,736 ) Mortgage loans purchased 13,734 6,181 21,124 10,916

Summary of Significant Accoun43

Summary of Significant Accounting Policies (Change in Accounting) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Interest income - mortgage loans held for portfolio	$ 64,174	$ 57,511	$ 126,400	$ 115,616
Net interest income after provision for credit losses	48,249	43,781	96,425	92,071
Income before assessments	37,886	37,135	71,911	75,411
Affordable Housing Program assessments	3,801	3,727	7,217	7,616
Net income	34,085	33,408	64,694	67,795
Total comprehensive income	30,867	42,472	60,882	93,252
Mortgage loans held for portfolio, net	7,932,724		7,932,724			$ 6,820,262
Total assets	45,236,517		45,236,517			41,853,032
Affordable Housing Program payable	35,120	43,462	35,120	43,462	$ 35,759	36,899	$ 43,211	$ 42,778
Total liabilities	42,995,509		42,995,509			39,477,762
Unrestricted retained earnings	691,512		691,512			672,159
Restricted retained earnings	118,409		118,409			105,470
Total retained earnings	809,921		809,921			777,629
Total capital	2,241,008	2,474,318	2,241,008	2,474,318		2,375,270		2,361,426
Total liabilities and capital	$ 45,236,517		45,236,517			$ 41,853,032
Amortization and depreciation			27,464	13,106
Other liabilities			18,687	7,083
Total adjustments, net			70,448	54,578
Net cash provided by operating activities			$ 135,142	122,373
Change in Amortization and Accretion Method
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Effect of change on net income		267		994
Interest income - mortgage loans held for portfolio		57,511		115,616
Net interest income after provision for credit losses		43,781		92,071
Income before assessments		37,135		75,411
Affordable Housing Program assessments		3,727		7,616
Net income		33,408		67,795
Total comprehensive income		42,472		93,252
Mortgage loans held for portfolio, net		6,230,400		6,230,400
Total assets		39,034,003		39,034,003
Affordable Housing Program payable		43,462		43,462
Total liabilities		36,559,685		36,559,685
Unrestricted retained earnings		664,776		664,776
Restricted retained earnings		95,710		95,710
Total retained earnings		760,486		760,486				729,775
Total capital		2,474,318		2,474,318
Total liabilities and capital		39,034,003		39,034,003
Amortization and depreciation				13,106
Other liabilities				7,083
Total adjustments, net				54,578
Net cash provided by operating activities				122,373
Change in Amortization and Accretion Method | Previous Method
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Interest income - mortgage loans held for portfolio		57,214		114,511
Net interest income after provision for credit losses		43,484		90,966
Income before assessments		36,838		74,306
Affordable Housing Program assessments		3,697		7,505
Net income		33,141		66,801
Total comprehensive income		42,205		92,258
Mortgage loans held for portfolio, net		6,251,472		6,251,472
Total assets		39,055,075		39,055,075
Affordable Housing Program payable		43,351		43,351
Total liabilities		36,559,574		36,559,574
Unrestricted retained earnings		682,872		682,872
Restricted retained earnings		98,797		98,797
Total retained earnings		781,669		781,669				751,952
Total capital		2,495,501		2,495,501
Total liabilities and capital		39,055,075		39,055,075
Amortization and depreciation				14,211
Other liabilities				6,972
Total adjustments, net				55,572
Net cash provided by operating activities				122,373
Change in Amortization and Accretion Method | Effect of Change
Error Corrections and Prior Period Adjustments Restatement [Line Items]
Interest income - mortgage loans held for portfolio		297		1,105
Net interest income after provision for credit losses		297		1,105
Income before assessments		297		1,105
Affordable Housing Program assessments		30		111
Net income		267		994
Total comprehensive income		267		994
Mortgage loans held for portfolio, net		(21,072)		(21,072)
Total assets		(21,072)		(21,072)
Affordable Housing Program payable		111		111
Total liabilities		111		111
Unrestricted retained earnings		(18,096)		(18,096)
Restricted retained earnings		(3,087)		(3,087)
Total retained earnings		(21,183)		(21,183)				$ (22,177)
Total capital		(21,183)		(21,183)
Total liabilities and capital		$ (21,072)		(21,072)
Amortization and depreciation				(1,105)
Other liabilities				111
Total adjustments, net				(994)
Net cash provided by operating activities				$ 0

Available-for-Sale Securities44

Available-for-Sale Securities (Major Security Types) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	$ 3,519,685	$ 3,501,915
Non-Credit OTTI		(201)	(127)
Gross Unrealized Gains		52,181	55,729
Gross Unrealized Losses		(739)	(1,352)
Estimated Fair Value		3,570,926	3,556,165
GSE and TVA debentures
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	3,113,797	3,139,037
Non-Credit OTTI		0	0
Gross Unrealized Gains		14,695	17,430
Gross Unrealized Losses		(739)	(1,352)
Estimated Fair Value		3,127,753	3,155,115
GSE MBS
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	77,736
Non-Credit OTTI		0
Gross Unrealized Gains		718
Gross Unrealized Losses		0
Estimated Fair Value		78,454
Private-label RMBS
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	328,152	362,878
Non-Credit OTTI		(201)	(127)
Gross Unrealized Gains		36,768	38,299
Gross Unrealized Losses		0	0
Estimated Fair Value		$ 364,719	$ 401,050
[1]	Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses) and fair-value hedge accounting adjustments.

Available-for-Sale Securities45

Available-for-Sale Securities (Unrealized Loss Positions) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	$ 266,017	$ 264,959
Less than 12 Months, Unrealized Losses	(739)	(1,352)
12 Months or More, Estimated Fair Value	4,995	5,656
12 Months or More, Unrealized Losses	(201)	(127)
Total Estimated Fair Value	271,012	270,615
Total Unrealized Losses	(940)	(1,479)
GSE and TVA debentures
Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	266,017	264,959
Less than 12 Months, Unrealized Losses	(739)	(1,352)
12 Months or More, Estimated Fair Value	0	0
12 Months or More, Unrealized Losses	0	0
Total Estimated Fair Value	266,017	264,959
Total Unrealized Losses	(739)	(1,352)
Private-label RMBS - prime
Available-for-sale Securities [Line Items]
Less than 12 Months, Estimated Fair Value	0	0
Less than 12 Months, Unrealized Losses	0	0
12 Months or More, Estimated Fair Value	4,995	5,656
12 Months or More, Unrealized Losses	(201)	(127)
Total Estimated Fair Value	4,995	5,656
Total Unrealized Losses	$ (201)	$ (127)

Available-for-Sale Securities46

Available-for-Sale Securities (Year of Contractual Maturity) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Available-for-sale Securities [Line Items]
Amortized Cost	[1]	$ 3,519,685	$ 3,501,915
Estimated Fair Value		3,570,926	3,556,165
Non-MBS
Available-for-sale Securities [Line Items]
Due in one year or less, Amortized Cost		207,315	0
Due after One Year Through Five Years, Amortized Cost		2,252,418	2,484,379
Due after Five Years Through Ten Years, Amortized Cost		654,064	654,658
Amortized Cost		3,113,797	3,139,037
Due in one year or less, Estimated Fair Value		207,905	0
Due after One Year Through Five Years, Estimated Fair Value		2,262,091	2,497,034
Due after Five Years Through Ten Years, Estimated Fair Value		657,757	658,081
Estimated Fair Value		3,127,753	3,155,115
MBS
Available-for-sale Securities [Line Items]
Amortized Cost		405,888	362,878
Estimated Fair Value		$ 443,173	$ 401,050
[1]	Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses) and fair-value hedge accounting adjustments.

Held-to-Maturity Securities (Ma

Held-to-Maturity Securities (Major Security Types) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	[1],[2]	$ 6,481,153	$ 6,982,290
Non-Credit (OTTI)		(151)	(175)
Carrying Value	[3]	6,481,002	6,982,115
Gross Unrecognized Holding Gains		114,396	124,854
Gross Unrecognized Holding Losses		(4,823)	(8,353)
Estimated Fair Value		6,590,575	7,098,616
GSE debentures
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	[1]	100,000	269,000
Non-Credit (OTTI)		0	0
Carrying Value		100,000	269,000
Gross Unrecognized Holding Gains		111	199
Gross Unrecognized Holding Losses		0	0
Estimated Fair Value		100,111	269,199
Manufactured housing loan ABS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	[1]	10,394	11,243
Non-Credit (OTTI)		0	0
Carrying Value		10,394	11,243
Gross Unrecognized Holding Gains		0	0
Gross Unrecognized Holding Losses		(1,010)	(1,164)
Estimated Fair Value		9,384	10,079
Home equity loan ABS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	[1]	1,575	1,716
Non-Credit (OTTI)		(151)	(175)
Carrying Value		1,424	1,541
Gross Unrecognized Holding Gains		76	114
Gross Unrecognized Holding Losses		(46)	(77)
Estimated Fair Value		1,454	1,578
MBS and ABS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	[1],[2]	6,381,153	6,713,290
Non-Credit (OTTI)		(151)	(175)
Carrying Value	[3]	6,381,002	6,713,115
Gross Unrecognized Holding Gains		114,285	124,655
Gross Unrecognized Holding Losses		(4,823)	(8,353)
Estimated Fair Value		6,490,464	6,829,417
Mortgage Backed Securities | Other U.S. obligations -guaranteed MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	[1]	2,986,326	3,032,494
Non-Credit (OTTI)		0	0
Carrying Value		2,986,326	3,032,494
Gross Unrecognized Holding Gains		30,870	30,598
Gross Unrecognized Holding Losses		(2,097)	(5,959)
Estimated Fair Value		3,015,099	3,057,133
Mortgage Backed Securities | GSE MBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost		3,296,309	3,567,958
Non-Credit (OTTI)		0	0
Carrying Value		3,296,309	3,567,958
Gross Unrecognized Holding Gains		82,921	93,583
Gross Unrecognized Holding Losses		(713)	(104)
Estimated Fair Value		3,378,517	3,661,437
Mortgage Backed Securities | Private-label RMBS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	[1]	86,549	99,879
Non-Credit (OTTI)		0	0
Carrying Value		86,549	99,879
Gross Unrecognized Holding Gains		418	360
Gross Unrecognized Holding Losses		(957)	(1,049)
Estimated Fair Value		$ 86,010	$ 99,190
[1]	Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses).
[2]	Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses).
[3]	Represents amortized cost after adjustment for non-credit OTTI recognized in AOCI.

Held-to-Maturity Securities (Un

Held-to-Maturity Securities (Unrealized Loss Position) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Estimated Fair Value		$ 629,397	$ 563,070
Less than 12 Months, Unrealized Losses		(812)	(1,265)
12 Months or More, Estimated Fair Value		690,654	781,490
12 Months or More, Unrealized Losses		(4,086)	(7,149)
Total Estimated Fair Value		1,320,051	1,344,560
Unrealized Loss Position	[1]	(4,898)	(8,414)
Manufactured housing loan ABS
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Estimated Fair Value		0	0
Less than 12 Months, Unrealized Losses		0	0
12 Months or More, Estimated Fair Value		9,384	10,080
12 Months or More, Unrealized Losses		(1,010)	(1,164)
Total Estimated Fair Value		9,384	10,080
Unrealized Loss Position	[1]	(1,010)	(1,164)
Home equity loan ABS
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Estimated Fair Value		0	0
Less than 12 Months, Unrealized Losses		0	0
12 Months or More, Estimated Fair Value		1,454	1,579
12 Months or More, Unrealized Losses		(121)	(138)
Total Estimated Fair Value		1,454	1,579
Unrealized Loss Position	[1]	(121)	(138)
MBS and ABS
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Estimated Fair Value		629,397	563,070
Less than 12 Months, Unrealized Losses		(812)	(1,265)
12 Months or More, Estimated Fair Value		690,654	781,490
12 Months or More, Unrealized Losses		(4,086)	(7,149)
Total Estimated Fair Value		1,320,051	1,344,560
Unrealized Loss Position	[1]	(4,898)	(8,414)
Mortgage Backed Securities | Private-label RMBS
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Estimated Fair Value		8,632	3,274
Less than 12 Months, Unrealized Losses		(30)	(3)
12 Months or More, Estimated Fair Value		37,448	41,050
12 Months or More, Unrealized Losses		(927)	(1,046)
Total Estimated Fair Value		46,080	44,324
Unrealized Loss Position	[1]	(957)	(1,049)
Mortgage Backed Securities | GSE MBS
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Estimated Fair Value		549,432	31,554
Less than 12 Months, Unrealized Losses		(713)	(8)
12 Months or More, Estimated Fair Value		0	26,013
12 Months or More, Unrealized Losses		0	(96)
Total Estimated Fair Value		549,432	57,567
Unrealized Loss Position	[1]	(713)	(104)
Mortgage Backed Securities | Other U.S. obligations -guaranteed MBS
Schedule of Held-to-maturity Securities [Line Items]
Less than 12 Months, Estimated Fair Value		71,333	528,242
Less than 12 Months, Unrealized Losses		(69)	(1,254)
12 Months or More, Estimated Fair Value		642,368	702,768
12 Months or More, Unrealized Losses		(2,028)	(4,705)
Total Estimated Fair Value		713,701	1,231,010
Unrealized Loss Position	[1]	$ (2,097)	$ (5,959)
[1]	For home equity loan ABS, total unrealized losses does not agree to total gross unrecognized holding losses at June 30, 2015 and December 31, 2014 of $(46) and $(77), respectively. Total unrealized losses include non-credit-related OTTI losses recorded in AOCI of $(151) and $(175), respectively, and gross unrecognized holding gains on previously OTTI securities of $76 and $114, respectively.

Held-to-Maturity Securities (Re

Held-to-Maturity Securities (Redemption Terms)(Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	[1],[2]	$ 6,481,153	$ 6,982,290
Carrying Value	[3]	6,481,002	6,982,115
Estimated Fair Value		6,590,575	7,098,616
Non-MBS
Schedule of Held-to-maturity Securities [Line Items]
Due in One Year or Less, Amortized Cost	[2]	100,000	169,000
Due After One Year Through Five Years, Amortized Cost	[2]	0	100,000
Amortized Cost	[2]	100,000	269,000
Due in One Year or Less, Carrying Value	[3]	100,000	169,000
Due After One Year Through Five Years, Carrying Value	[3]	0	100,000
Carrying Value	[3]	100,000	269,000
Due in One Year or Less, Estimated Fair Value		100,111	169,099
Due After One Year Through Five Years, Estimated Fair Value		0	100,100
Estimated Fair Value		100,111	269,199
MBS and ABS
Schedule of Held-to-maturity Securities [Line Items]
Amortized Cost	[1],[2]	6,381,153	6,713,290
Carrying Value	[3]	6,381,002	6,713,115
Estimated Fair Value		$ 6,490,464	$ 6,829,417
[1]	Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses).
[2]	Includes adjustments made to the cost basis of an investment for accretion, amortization, collection of principal, and, if applicable, OTTI recognized in earnings (credit losses).
[3]	Represents amortized cost after adjustment for non-credit OTTI recognized in AOCI.

Held-to-Maturity Securities (Na

Held-to-Maturity Securities (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Investments, Debt and Equity Securities [Abstract]
Gross Unrecognized Holding Losses	$ (4,823)	$ (8,353)
Schedule of Held-to-maturity Securities [Line Items]
Non-Credit (OTTI)	(151)	(175)
Gross Unrecognized Holding Losses	(4,823)	(8,353)
Gross Unrecognized Holding Gains	114,396	124,854
Home equity loan ABS
Investments, Debt and Equity Securities [Abstract]
Gross Unrecognized Holding Losses	(46)	(77)
Schedule of Held-to-maturity Securities [Line Items]
Non-Credit (OTTI)	(151)	(175)
Gross Unrecognized Holding Losses	(46)	(77)
Gross Unrecognized Holding Gains	$ 76	$ 114

Other-Than-Temporary Impairme51

Other-Than-Temporary Impairment (Securities with OTTI Losses) (Details) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015USD ($)Security	Jun. 30, 2014Security	Jun. 30, 2015USD ($)Security	Jun. 30, 2014Security
Other than Temporary Impairment, Disclosure [Line Items]
Number of securities | Security		1	1	1	1
FLHB assumed current-to-trough home price decline rate		(2.00%)		(2.00%)
FLHB assumed current-to-trough home price increase rate		8.00%		8.00%
HTM Securities
Other than Temporary Impairment, Disclosure [Line Items]
OTTI Life-to-Date, UPB		$ 707		$ 707
OTTI Life-to-Date, Amortized Cost		677		677
OTTI Life-to-Date, Carrying Value		527		527
OTTI Life-to-Date, Estimated Fair Value		602		602
AFS Securities
Other than Temporary Impairment, Disclosure [Line Items]
OTTI Life-to-Date, UPB		386,909		386,909
OTTI Life-to-Date, Amortized Cost		328,152		328,152
OTTI Life-to-Date, Estimated Fair Value		364,719		364,719
Prime | HTM Securities | Private-label RMBS - prime
Other than Temporary Impairment, Disclosure [Line Items]
OTTI Life-to-Date, UPB		0		0
OTTI Life-to-Date, Amortized Cost		0		0
OTTI Life-to-Date, Carrying Value		0		0
OTTI Life-to-Date, Estimated Fair Value		0		0
Prime | AFS Securities | Private-label RMBS - prime
Other than Temporary Impairment, Disclosure [Line Items]
OTTI Life-to-Date, UPB		386,909		386,909
OTTI Life-to-Date, Amortized Cost		328,152		328,152
OTTI Life-to-Date, Estimated Fair Value		364,719		364,719
Subprime | HTM Securities | Home equity loan ABS
Other than Temporary Impairment, Disclosure [Line Items]
OTTI Life-to-Date, UPB		707		707
OTTI Life-to-Date, Amortized Cost		677		677
OTTI Life-to-Date, Carrying Value		527		527
OTTI Life-to-Date, Estimated Fair Value		602		602
Subprime | AFS Securities | Home equity loan ABS
Other than Temporary Impairment, Disclosure [Line Items]
OTTI Life-to-Date, UPB		0		0
OTTI Life-to-Date, Amortized Cost		0		0
OTTI Life-to-Date, Estimated Fair Value		$ 0		$ 0
Minimum | Private-label RMBS - prime
Other than Temporary Impairment, Disclosure [Line Items]
Assumed current to trough home price increase rate		2.00%		2.00%
Maximum | Private-label RMBS - prime
Other than Temporary Impairment, Disclosure [Line Items]
Assumed current to trough home price increase rate		5.00%		5.00%
Securitization in 2006 | Prime | Private-label RMBS - prime
Other than Temporary Impairment, Disclosure [Line Items]
Prepayment Rates	[1]	16.00%
Default Rates	[1]	16.30%
Loss Severities	[1]	34.30%
Current Credit Enhancement	[1]	0.00%		0.00%
[1]	Weighted average based on UPB.

Other-Than-Temporary Impairme52

Other-Than-Temporary Impairment (Rollforward of the Cumulative Credit Losses) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance at Beginning of Period		$ 68,374	$ 72,457	$ 69,626	$ 72,287
Additions:
Additional credit losses for which OTTI was previously recognized	[1]	32	58	32	228
Reductions:
Increases in cash flows expected to be collected (accreted as interest income over the remaining lives of the applicable securities)		(2,357)	(931)	(3,609)	(931)
Balance at End of Period		$ 66,049	$ 71,584	$ 66,049	$ 71,584
[1]	For the three and six months ended June 30, 2015 and 2014, the amount relates to one security originally impaired prior to January 1, 2014.

Advances (Narratives) (Details)

Advances (Narratives) (Details) $ in Thousands	Jun. 30, 2015USD ($)Borrower	Dec. 31, 2014USD ($)Borrower
Federal Home Loan Bank, Advances [Line Items]
Total advances, par value	$ 24,185,465	$ 20,630,202
Advances outstanding greater than one billion dollars per borrower amount	12,500,000	$ 8,300,000
Threshold for outstanding	$ 1,000,000
Advances outstanding greater than one billion dollars per borrower percent	52.00%	40.00%
Advances outstanding greater than one billion dollars per borrower, number of borrowers | Borrower	7	5
UPB of collateral to cover the Advances to these institutions	$ 22,400,000	$ 15,100,000
Minimum
Federal Home Loan Bank, Advances [Line Items]
Interest rate of advances outstanding	0.00%
Maximum
Federal Home Loan Bank, Advances [Line Items]
Interest rate of advances outstanding	7.53%
Federal Home Loan Bank, Advances, Callable Option
Federal Home Loan Bank, Advances [Line Items]
Total advances, par value	$ 6,200,000	5,600,000
Federal Home Loan Bank, Advances, Putable Option
Federal Home Loan Bank, Advances [Line Items]
Total advances, par value	$ 335,500	$ 179,000

Advances by Year of Contractual

Advances by Year of Contractual Maturity (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Year of Contractual Maturity, Amount
Overdrawn demand and overnight deposit accounts	$ 1,200	$ 0
Due in 1 year or less	10,014,629	7,406,652
Due after 1 year through 2 years	2,521,285	2,529,649
Due after 2 years through 3 years	2,765,255	2,331,427
Due after 3 years through 4 years	1,496,916	2,047,262
Due after 4 years through 5 years	2,539,194	1,571,567
Thereafter	4,846,986	4,743,645
Total advances, par value	$ 24,185,465	$ 20,630,202
Year of Contractual Maturity, WAIR %
Overdrawn demand and overnight deposit accounts	2.44%	0.00%
Due in 1 year or less	0.70%	0.83%
Due after 1 year through 2 years	1.24%	1.28%
Due after 2 years through 3 years	1.90%	1.57%
Due after 3 years through 4 years	2.04%	2.05%
Due after 4 years through 5 years	1.55%	2.51%
Thereafter	1.42%	1.31%
Total advances, par value	1.21%	1.33%
Fair-value hedging adjustments	$ 95,336	$ 117,118
Unamortized swap termination fees associated with modified advances, net of deferred prepayment fees	37,556	42,347
Total Advances	$ 24,318,357	$ 20,789,667

Advances Earlier of Contractual

Advances Earlier of Contractual Maturity or Next Call Date and Year of Contractual Maturity or Next Put Date (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Advances [Abstract]
Overdrawn demand and overnight deposit accounts	$ 1,200	$ 0
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Call Date, Rolling Year, Par Value [Abstract]
Due in 1 year or less	14,245,409	11,293,767
Due after 1 year through 2 years	2,722,535	2,533,649
Due after 2 years through 3 years	2,679,090	2,208,677
Due after 3 years through 4 years	1,271,916	1,847,262
Due after 4 years through 5 years	1,704,194	1,506,567
Thereafter	1,561,121	1,240,280
Federal Home Loan Bank, Advances, Earlier of Contractual Maturity or Next Put or Convert Date, Rolling Year, Par Value [Abstract]
Due in 1 year or less	10,296,129	7,574,152
Due after 1 year through 2 years	2,468,785	2,499,649
Due after 2 years through 3 years	2,684,255	2,233,927
Due after 3 years through 4 years	1,486,916	2,012,262
Due after 4 years through 5 years	2,441,194	1,566,567
Thereafter	4,806,986	4,743,645
Total Advances, par value	$ 24,185,465	$ 20,630,202

Mortgage Loans Held for Portf56

Mortgage Loans Held for Portfolio (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		$ 7,779,798		$ 6,704,442
Unamortized premiums		155,142		116,602
Unamortized discounts		(4,076)		(2,176)
Fair-value hedging adjustments		3,210		3,894
Allowance for loan losses		(1,350)		(2,500)
Total mortgage loans held for portfolio, net		7,932,724		6,820,262
Conventional
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		7,111,047		5,968,929
Allowance for loan losses		(1,350)	$ (2,250)	(2,500)	$ (3,250)	$ (3,500)	$ (4,500)
Government
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		668,751		735,513
Fixed-rate long-term mortgages
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		6,613,100		5,662,440
Fixed-rate medium-term mortgages
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB	[1]	$ 1,166,698		1,042,002
Fixed-rate medium-term mortgages | Maximum
Mortgage Loans on Real Estate [Line Items]
Original term		15 years
MPP
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		$ 7,305,017		6,196,765
Unamortized premiums		147,141		107,876
Unamortized discounts		(3,790)		(1,874)
Fair-value hedging adjustments		3,663		4,369
Allowance for loan losses		(1,200)		(2,250)
Total mortgage loans held for portfolio, net		7,450,831		6,304,886
MPP | Conventional
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		6,731,081		5,562,460
Fair-value hedging adjustments		3,619		4,323
Allowance for loan losses		(1,200)	(2,000)	(2,250)	(3,000)	(3,000)	(4,000)
MPP | Government
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		573,936		634,305
MPP | Fixed-rate long-term mortgages
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		6,211,191		5,233,682
MPP | Fixed-rate medium-term mortgages
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB	[1]	1,093,826		963,083
MPF
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		474,781		507,677
Unamortized premiums		8,001		8,726
Unamortized discounts		(286)		(302)
Fair-value hedging adjustments		(453)		(475)
Allowance for loan losses		(150)		(250)
Total mortgage loans held for portfolio, net		481,893		515,376
MPF | Conventional
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		379,966		406,469
Fair-value hedging adjustments		(390)		(417)
Allowance for loan losses		(150)	$ (250)	(250)	$ (250)	$ (500)	$ (500)
MPF | Government
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		94,815		101,208
Fair-value hedging adjustments		(63)		(57)
MPF | Fixed-rate long-term mortgages
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB		401,909		428,758
MPF | Fixed-rate medium-term mortgages
Mortgage Loans on Real Estate [Line Items]
Mortgage Loans Held for Portfolio, UPB	[1]	$ 72,872		$ 78,919
[1]	Defined as a term of 15 years or less at origination.

Allowance for Credit Losses (Cr

Allowance for Credit Losses (Credit Enhancements) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Mar. 31, 2015	Dec. 31, 2014	Mar. 31, 2014	Dec. 31, 2013
Credit Enhancement Fund [Roll Forward]
Balance of LRA, beginning of period	$ 72,178	$ 46,958	$ 61,949	$ 45,330
Additions	10,959	3,684	21,508	6,110
Claim paid	(361)	(617)	(547)	(1,253)
Distributions	(152)	(107)	(286)	(269)
Balance of LRA, end of period	82,624	49,918	82,624	49,918
Allowance for loan losses	1,350		1,350			$ 2,500
Credit enhancement fee paid to participating financial institutions, gross	90	101	184	203
Exposure under FLA	3,462		3,462			3,431
CE Obligations available to cover losses in excess of the FLA	26,862		26,862			26,851
FLA loss reduction	0		0			2
Conventional
Credit Enhancement Fund [Roll Forward]
Allowance for loan losses	1,350	3,250	1,350	3,250	$ 2,250	2,500	$ 3,500	$ 4,500
MPP
Credit Enhancement Fund [Roll Forward]
Allowance for loan losses	1,200		1,200			2,250
MPP | Conventional
Credit Enhancement Fund [Roll Forward]
Estimated losses remaining after borrower's equity, before credit enhancements	12,007		12,007			25,232
Allowance for unrecoverable PMI/SMI	139		139			240
Allowance for loan losses	1,200	3,000	1,200	3,000	2,000	2,250	3,000	4,000
MPP | Conventional | PMI
Credit Enhancement Fund [Roll Forward]
Portion of estimated losses recoverable from	(2,361)		(2,361)			(3,301)
MPP | Conventional | LRA
Credit Enhancement Fund [Roll Forward]
Portion of estimated losses recoverable from	(1,513)		(1,513)			(5,334)
MPP | Conventional | SMI
Credit Enhancement Fund [Roll Forward]
Portion of estimated losses recoverable from	(7,072)		(7,072)			(14,587)
MPF
Credit Enhancement Fund [Roll Forward]
Allowance for loan losses	150		150			250
MPF | Conventional
Credit Enhancement Fund [Roll Forward]
Allowance for loan losses	$ 150	$ 250	$ 150	$ 250	$ 250	$ 250	$ 500	$ 500

Allowance for Credit Losses (Al

Allowance for Credit Losses (Allowance) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Dec. 31, 2014
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses on mortgage loans, beginning of period				$ 2,500
Provision for (reversal of) loan losses		$ (951)	$ (86)	(388)	$ (790)
Allowance for loan losses on mortgage loans, end of period		1,350		1,350
Total allowance for loan losses		1,350		2,500		$ 1,350	$ 2,500
Total recorded investment						7,967,268	6,850,904
Conventional
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses on mortgage loans, beginning of period		2,250	3,500	2,500	4,500
Charge-offs, net of recoveries		51	(164)	(762)	(460)
Provision for (reversal of) loan losses		(951)	(86)	(388)	(790)
Allowance for loan losses on mortgage loans, end of period		1,350	3,250	1,350	3,250
Allowance for loan losses, loans collectively evaluated for impairment						1,253	2,026
Allowance for loan losses, loans individually evaluated for impairment	[1]					97	474
Total allowance for loan losses		2,250	3,500	2,500	4,500	1,350	2,500
Recorded Investment, loans collectively evaluated for impairment						7,267,828	6,083,093
Recorded Investment, loans individually evaluated for impairment	[1]					19,334	19,889
Total recorded investment						7,287,162	6,102,982
Principal paid in full by servicers						4,001	5,519
Potential claims included in allowance						30	153
MPP
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses on mortgage loans, beginning of period				2,250
Allowance for loan losses on mortgage loans, end of period		1,200		1,200
Total allowance for loan losses		1,200		2,250		1,200	2,250
MPP | Conventional
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses on mortgage loans, beginning of period		2,000	3,000	2,250	4,000
Charge-offs, net of recoveries		53	(164)	(760)	(451)
Provision for (reversal of) loan losses		(853)	164	(290)	(549)
Allowance for loan losses on mortgage loans, end of period		1,200	3,000	1,200	3,000
Allowance for loan losses, loans collectively evaluated for impairment						1,103	1,776
Allowance for loan losses, loans individually evaluated for impairment	[1]					97	474
Total allowance for loan losses		2,000	3,000	2,250	4,000	1,200	2,250
Recorded Investment, loans collectively evaluated for impairment						6,879,585	5,667,524
Recorded Investment, loans individually evaluated for impairment	[1]					19,334	19,889
Total recorded investment						6,898,919	5,687,413
MPF
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses on mortgage loans, beginning of period				250
Allowance for loan losses on mortgage loans, end of period		150		150
Total allowance for loan losses		150		250		150	250
MPF | Conventional
Allowance for Loan and Lease Losses [Roll Forward]
Allowance for loan losses on mortgage loans, beginning of period		250	500	250	500
Charge-offs, net of recoveries		(2)	0	(2)	(9)
Provision for (reversal of) loan losses		(98)	(250)	(98)	(241)
Allowance for loan losses on mortgage loans, end of period		150	250	150	250
Allowance for loan losses, loans collectively evaluated for impairment						150	250
Allowance for loan losses, loans individually evaluated for impairment	[1]					0	0
Total allowance for loan losses		$ 250	$ 500	$ 250	$ 500	150	250
Recorded Investment, loans collectively evaluated for impairment						388,243	415,569
Recorded Investment, loans individually evaluated for impairment	[1]					0	0
Total recorded investment						$ 388,243	$ 415,569
[1]	The recorded investment in our MPP conventional loans individually evaluated for impairment excludes principal that was previously paid in full by the servicers as of June 30, 2015 and December 31, 2014 of $4,001 and $5,519, respectively, that remains subject to potential claims by those servicers for any losses resulting from past or future liquidations of the underlying properties. However, the MPP allowance for loan losses includes $30 and $153 for these potential claims as of June 30, 2015 and December 31, 2014, respectively.

Allowance for Credit Losses (Pa

Allowance for Credit Losses (Past Due) (Details) - USD ($) $ in Thousands		6 Months Ended
		Jun. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Past due 30-59 days delinquent		$ 65,449	$ 87,617
Past due 60-89 days delinquent		17,352	21,798
Past due 90 days or more delinquent		41,786	53,248
Total past due		124,587	162,663
Total current		7,842,681	6,688,241
Total recorded investment		7,967,268	6,850,904
Net unamortized premiums		(151,066)	(114,426)
Fair-value hedging adjustments		(3,210)	(3,894)
Accrued interest receivable		(33,194)	(28,142)
Total mortgage loans held for portfolio, UPB		7,779,798	6,704,442
In process of foreclosure, included above	[1]	$ 26,752	$ 32,369
Serious delinquency rate (percentage)	[2]	0.52%	0.78%
Past due 90 days or more still accruing interest	[3]	$ 34,799	$ 50,460
On non-accrual status		$ 8,460	7,208
Delinquent loan receivable (in days)		90 days
Conventional
Financing Receivable, Recorded Investment [Line Items]
Total recorded investment		$ 7,287,162	6,102,982
Total mortgage loans held for portfolio, UPB		7,111,047	5,968,929
Government
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans held for portfolio, UPB		668,751	735,513
MPP
Financing Receivable, Recorded Investment [Line Items]
Fair-value hedging adjustments		(3,663)	(4,369)
Total mortgage loans held for portfolio, UPB		7,305,017	6,196,765
MPP | Conventional
Financing Receivable, Recorded Investment [Line Items]
Past due 30-59 days delinquent		46,989	59,365
Past due 60-89 days delinquent		12,140	14,879
Past due 90 days or more delinquent		38,810	49,128
Total past due		97,939	123,372
Total current		6,800,980	5,564,041
Total recorded investment		6,898,919	5,687,413
Net unamortized premiums		(135,331)	(97,411)
Fair-value hedging adjustments		(3,619)	(4,323)
Accrued interest receivable		(28,888)	(23,219)
Total mortgage loans held for portfolio, UPB		6,731,081	5,562,460
In process of foreclosure, included above	[1]	$ 26,752	$ 32,369
Serious delinquency rate (percentage)	[2]	0.56%	0.86%
Past due 90 days or more still accruing interest	[3]	$ 31,998	$ 46,341
On non-accrual status		8,125	7,207
MPP | FHA Loans
Financing Receivable, Recorded Investment [Line Items]
Past due 30-59 days delinquent		16,628	25,954
Past due 60-89 days delinquent		4,733	6,010
Past due 90 days or more delinquent		2,613	3,636
Total past due		23,974	35,600
Total current		560,002	609,711
Total recorded investment		583,976	645,311
Net unamortized premiums		(8,020)	(8,591)
Fair-value hedging adjustments		(44)	(45)
Accrued interest receivable		(1,976)	(2,370)
Total mortgage loans held for portfolio, UPB		573,936	634,305
In process of foreclosure, included above	[1]	$ 0	$ 0
Serious delinquency rate (percentage)	[2]	0.45%	0.56%
Past due 90 days or more still accruing interest	[3]	$ 2,613	$ 3,636
On non-accrual status		0	0
MPP | Government
Financing Receivable, Recorded Investment [Line Items]
Total mortgage loans held for portfolio, UPB		573,936	634,305
MPF
Financing Receivable, Recorded Investment [Line Items]
Fair-value hedging adjustments		453	475
Total mortgage loans held for portfolio, UPB		474,781	507,677
MPF | Conventional
Financing Receivable, Recorded Investment [Line Items]
Past due 30-59 days delinquent		627	1,011
Past due 60-89 days delinquent		1	252
Past due 90 days or more delinquent		175	1
Total past due		803	1,264
Total current		387,440	414,305
Total recorded investment		388,243	415,569
Net unamortized premiums		(6,746)	(7,400)
Fair-value hedging adjustments		390	417
Accrued interest receivable		(1,921)	(2,117)
Total mortgage loans held for portfolio, UPB		379,966	406,469
In process of foreclosure, included above	[1]	$ 0	$ 0
Serious delinquency rate (percentage)	[2]	0.05%	0.00%
Past due 90 days or more still accruing interest	[3]	$ 0	$ 0
On non-accrual status		335	1
MPF | Government
Financing Receivable, Recorded Investment [Line Items]
Past due 30-59 days delinquent		1,205	1,287
Past due 60-89 days delinquent		478	657
Past due 90 days or more delinquent		188	483
Total past due		1,871	2,427
Total current		94,259	100,184
Total recorded investment		96,130	102,611
Net unamortized premiums		(969)	(1,024)
Fair-value hedging adjustments		63	57
Accrued interest receivable		(409)	(436)
Total mortgage loans held for portfolio, UPB		94,815	101,208
In process of foreclosure, included above	[1]	$ 0	$ 0
Serious delinquency rate (percentage)	[2]	0.20%	0.47%
Past due 90 days or more still accruing interest	[3]	$ 188	$ 483
On non-accrual status		$ 0	$ 0
[1]	Includes loans for which the decision of foreclosure or similar alternative, such as pursuit of deed-in-lieu of foreclosure, has been reported. Loans in process of foreclosure are included in past due categories depending on their delinquency status.
[2]	Represents loans 90 days or more past due (including loans in process of foreclosure) expressed as a percentage of the total recorded investment in mortgage loans. The percentage excludes principal and interest amounts that were previously paid in full by the servicers on conventional loans that are pending resolution of potential loss claims. Many government, including FHA, loans are repurchased by the servicers when they reach 90 days or more delinquent status, similar to the rules for servicers of Ginnie Mae MBS, resulting in the lower serious delinquency rate for government loans.
[3]	Although our past due scheduled/scheduled MPP loans are classified as loans past due 90 days or more based on the mortgagor's payment status, we do not consider these loans to be non-accrual.

Allowance for Credit Losses (Tr

Allowance for Credit Losses (Troubled Debt Restructuring) (Details)	3 Months Ended		6 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)contract	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)
Financing Receivable, Modifications [Line Items]
Period of time principal or interest past due to have defaulted on troubled debt restructuring			60 days
Recorded investment of loans modified as troubled debt restructurings that subsequently default	$ 104,000	$ 0	$ 144,000	$ 0
MPF
Financing Receivable, Modifications [Line Items]
Financing Receivable, Modifications, Number of Contracts | contract			1
Recorded Investment	160,000		$ 160,000
MPP | Conventional
Financing Receivable, Modifications [Line Items]
Performing	17,173,000		17,173,000		$ 13,744,000
Non-Performing	2,161,000		2,161,000		6,145,000
Recorded Investment	$ 19,334,000		$ 19,334,000		$ 19,889,000

Allowance for Credit Losses (Im

Allowance for Credit Losses (Impaired Debt) (Details) - MPP - Conventional - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Financing Receivable, Impaired [Line Items]
Conventional loans without allowance for loan losses, Recorded Investment	[1]	$ 18,215		$ 18,215		$ 13,744
Conventional loans with allowance for loan losses, Recorded Investment		1,119		1,119		6,145
Total recorded investment		19,334		19,334		19,889
Conventional loans without allowance for loan losses, UPB	[1]	18,069		18,069		13,647
Conventional loans with allowance for loan losses, UPB		1,128		1,128		6,099
Total UPB		19,197		19,197		19,746
Allowance for loan losses		67		67		$ 321
Conventional Loans without Allowance, Average Recorded Investment		18,446	$ 18,540	18,543	$ 18,161
Conventional Loans without Allowance, Interest Income Recognized		232	275	455	530
Conventional Loans with Allowance, Average Recorded Investment		1,133	948	1,139	950
Conventional Loans with Allowance, Interest Income Recognized		15	14	79	30
Impaired Financing Receivable, Average Recorded Investment		19,579	19,488	19,682	19,111
Impaired Financing Receivable, Interest Income, Accrual Method		$ 247	$ 289	$ 534	$ 560
[1]	No allowance for loan losses was recorded on these impaired loans after consideration of the underlying loan-specific attribute data, estimated liquidation value of real estate collateral held, estimated costs associated with maintaining and disposing of the collateral, and credit enhancements.

Derivative and Hedging Activi62

Derivative and Hedging Activities (Derivatives in Statement of Condition) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives		$ 31,627,369	$ 29,849,080
Estimated Fair Value of Derivative Assets		58,346	56,448
Estimated Fair Value of Derivative Liabilities		275,683	333,918
Netting adjustments and cash collateral, assets	[1],[2]	(16,583)	(30,961)
Netting adjustments and cash collateral, liabilities	[1],[2]	(180,049)	(230,665)
Derivative Asset, net		41,763	25,487
Derivative Liability, net		95,634	103,253
Derivatives designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives		30,595,463	27,527,697
Estimated Fair Value of Derivative Assets		57,482	55,095
Estimated Fair Value of Derivative Liabilities		275,072	331,546
Derivatives designated as hedging instruments: | Interest-rate swaps
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives		30,595,463	27,527,697
Estimated Fair Value of Derivative Assets		57,482	55,095
Estimated Fair Value of Derivative Liabilities		275,072	331,546
Derivatives not designated as hedging instruments:
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives		1,031,906	2,321,383
Estimated Fair Value of Derivative Assets		864	1,353
Estimated Fair Value of Derivative Liabilities		611	2,372
Derivatives not designated as hedging instruments: | Interest-rate swaps
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives		341,717	1,476,365
Estimated Fair Value of Derivative Assets		301	330
Estimated Fair Value of Derivative Liabilities		111	735
Derivatives not designated as hedging instruments: | Interest-rate caps/floors
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives		340,500	340,500
Estimated Fair Value of Derivative Assets		161	312
Estimated Fair Value of Derivative Liabilities		0	0
Derivatives not designated as hedging instruments: | Interest-rate forwards
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives		175,500	252,100
Estimated Fair Value of Derivative Assets		179	0
Estimated Fair Value of Derivative Liabilities		33	1,631
Derivatives not designated as hedging instruments: | MDCs
Derivatives, Fair Value [Line Items]
Notional Amount of Derivatives		174,189	252,418
Estimated Fair Value of Derivative Assets		223	711
Estimated Fair Value of Derivative Liabilities		$ 467	$ 6
[1]	Represents the application of the netting requirements that allow the settlement of (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty.
[2]	Represents the application of the netting requirements that allow us to settle (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty. Cash collateral placed at June 30, 2015 and December 31, 2014 was $165,007 and $201,284, respectively. Cash collateral held at June 30, 2015 and December 31, 2014 was $1,540 and $1,580, respectively.

Derivative and Hedging Activi63

Derivative and Hedging Activities (Offsetting of Derivative Assets and Derivative Liabilities) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset		$ 57,944	$ 55,737
Derivative Liability, Fair Value, Gross Liability		275,183	332,281
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset	[1],[2]	(16,583)	(30,961)
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset	[1],[2]	(180,049)	(230,665)
Derivative Asset, Net Fair Value Amount, After Offsetting Adjustment		41,361	24,776
Derivative Liability, Net Fair Value Amount, After Offsetting Adjustment		95,134	101,616
Derivative Asset, Not Subject to Master Netting Arrangement	[3]	402	711
Derivative Liability, Not Subject to Master Netting Arrangement	[3]	500	1,637
Derivative Asset, net		41,763	25,487
Derivative Liability, net		95,634	103,253
Bilateral
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset		34,252	48,532
Derivative Liability, Fair Value, Gross Liability		245,816	308,041
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset		(33,871)	(48,389)
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset		(150,682)	(206,425)
Derivative Asset, Net Fair Value Amount, After Offsetting Adjustment		381	143
Derivative Liability, Net Fair Value Amount, After Offsetting Adjustment		95,134	101,616
Cleared
Derivative Instruments and Hedging Activities Disclosures [Line Items]
Derivative Asset, Fair Value, Gross Asset		23,692	7,205
Derivative Liability, Fair Value, Gross Liability		29,367	24,240
Derivative Asset, Fair Value, Gross Liability and Obligation to Return Cash, Offset		17,288	17,428
Derivative Liability, Fair Value, Gross Asset and Right to Reclaim Cash, Offset		(29,367)	(24,240)
Derivative Asset, Net Fair Value Amount, After Offsetting Adjustment		40,980	24,633
Derivative Liability, Net Fair Value Amount, After Offsetting Adjustment		$ 0	$ 0
[1]	Represents the application of the netting requirements that allow the settlement of (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty.
[2]	Represents the application of the netting requirements that allow us to settle (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty. Cash collateral placed at June 30, 2015 and December 31, 2014 was $165,007 and $201,284, respectively. Cash collateral held at June 30, 2015 and December 31, 2014 was $1,540 and $1,580, respectively.
[3]	Includes MDCs and certain interest-rate forwards.

Derivative and Hedging Activi64

Derivative and Hedging Activities (Derivatives in Statement of Income) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Total net gain (loss) related to fair-value hedge ineffectiveness	$ 6,332	$ (2,908)	$ 6,441	$ (3,519)
Total net gain (loss) on derivatives not designated as hedging instruments	931	6,046	(1,058)	9,625
Net gains (losses) on derivatives and hedging activities	7,263	3,138	5,383	6,106
Interest-rate swaps
Derivative Instruments, Gain (Loss) [Line Items]
Total net gain (loss) related to fair-value hedge ineffectiveness	6,332	(2,908)	6,441	(3,519)
Total net gain (loss) on derivatives not designated as hedging instruments	1,660	4,428	865	5,771
Interest-rate caps/floors
Derivative Instruments, Gain (Loss) [Line Items]
Total net gain (loss) on derivatives not designated as hedging instruments	(45)	(413)	(151)	(875)
Interest-rate forwards
Derivative Instruments, Gain (Loss) [Line Items]
Total net gain (loss) on derivatives not designated as hedging instruments	1,973	(2,700)	(1,348)	(3,425)
Net interest settlements
Derivative Instruments, Gain (Loss) [Line Items]
Total net gain (loss) on derivatives not designated as hedging instruments	201	2,715	492	5,440
MDCs
Derivative Instruments, Gain (Loss) [Line Items]
Total net gain (loss) on derivatives not designated as hedging instruments	$ (2,858)	$ 2,016	$ (916)	$ 2,714

Derivative and Hedging Activi65

Derivative and Hedging Activities (Derivatives in Statement of Income and Impact on Interest) (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivatives		$ 74,648	$ 393	$ 41,858	$ 24,996
Gain (Loss) on Hedged Item		(68,316)	(3,301)	(35,417)	(28,515)
Net Fair Value Hedge Ineffectiveness		6,332	(2,908)	6,441	(3,519)
Effect on Net Interest Income	[1]	(48,900)	(41,846)	(96,160)	(84,117)
Advances
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivatives		47,732	(19,830)	10,780	(21,133)
Gain (Loss) on Hedged Item		(44,213)	19,172	(8,508)	21,580
Net Fair Value Hedge Ineffectiveness		3,519	(658)	2,272	447
Effect on Net Interest Income	[1]	(39,242)	(36,883)	(78,669)	(73,283)
AFS Securities
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivatives		31,739	(9,093)	20,841	(7,859)
Gain (Loss) on Hedged Item		(32,147)	9,041	(21,828)	7,981
Net Fair Value Hedge Ineffectiveness		(408)	(52)	(987)	122
Effect on Net Interest Income	[1]	(24,303)	(24,526)	(48,732)	(49,021)
CO bonds
Derivative Instruments, Gain (Loss) [Line Items]
Gain (Loss) on Derivatives		(4,823)	29,316	10,237	53,988
Gain (Loss) on Hedged Item		8,044	(31,514)	(5,081)	(58,076)
Net Fair Value Hedge Ineffectiveness		3,221	(2,198)	5,156	(4,088)
Effect on Net Interest Income	[1]	$ 14,645	$ 19,563	$ 31,241	$ 38,187
[1]	Includes the effect of derivatives in fair-value hedging relationships on net interest income that is recorded in the interest income/expense line item of the respective hedged items. Excludes the interest income/expense of the respective hedged items, which fully offset the interest income/expense of the derivatives, except to the extent of any hedge ineffectiveness. Net interest settlements on derivatives that are not in fair-value hedging relationships are reported in other income (loss).

Derivative and Hedging Activi66

Derivative and Hedging Activities (Narrative) (Details) - USD ($) $ in Thousands	Jun. 30, 2015	Dec. 31, 2014
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivative, Collateral, Right to Reclaim Cash	$ 165,007	$ 201,284
Derivative, Collateral, Obligation to Return Cash	1,540	$ 1,580
Derivative, Net Liability Position, Aggregate Fair Value	212,307
Collateral Already Posted, Aggregate Fair Value	117,901
Derivative, Net Liability Position, Aggregate Fair Value, Not Subject to Credit Support Agreement	500
Additional Collateral, Aggregate Fair Value	$ 7,210

Consolidated Obligations (Detai

Consolidated Obligations (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2015	Dec. 31, 2014
Schedule of Short-term and Long-term Debt [Line Items]
Discount Notes maturity period	1 year
Discount Note [Abstract]
Discount Notes	$ 11,802,629	$ 12,567,696
CO Bonds [Abstract]
Bonds	29,647,600	25,503,138
CO Bonds
CO Bonds [Abstract]
Due in 1 year or less	14,715,220	11,695,550
Due after 1 year through 2 years	3,828,220	2,018,510
Due after 2 years through 3 years	2,326,710	2,158,950
Due after 3 years through 4 years	1,104,850	1,934,100
Due after 4 years through 5 years	1,796,625	999,700
Thereafter	5,860,950	6,692,000
Unamortized premiums	29,901	27,138
Unamortized discounts	(14,083)	(14,913)
Fair-value hedging adjustments	$ (793)	$ (7,897)
Due in 1 year or less, WAIR %	0.36%	0.33%
Due after 1 year through 2 years, WAIR %	0.94%	1.49%
Due after 2 years through 3 years, WAIR %	1.81%	1.76%
Due after 3 years through 4 years, WAIR %	2.42%	1.49%
Due after 4 years through 5 years, WAIR %	2.67%	2.51%
Thereafter, WAIR %	3.19%	3.11%
Total WAIR%	1.32%	1.44%
Earlier of Contractual Maturity or Next Call Date
CO Bonds [Abstract]
Due in 1 year or less	$ 21,933,220	$ 19,918,550
Due after 1 year through 2 years	3,230,220	1,651,510
Due after 2 years through 3 years	1,274,710	883,950
Due after 3 years through 4 years	677,850	461,100
Due after 4 years through 5 years	1,149,625	543,700
Thereafter	1,366,950	2,040,000
Non-callable / non-putable
CO Bonds [Abstract]
Bonds	22,281,575	17,253,810
Callable
CO Bonds [Abstract]
Bonds	$ 7,351,000	$ 8,245,000
Discount Notes
Discount Note [Abstract]
Weighted average effective interest rate	0.14%	0.12%
FHLBanks
Schedule of Short-term and Long-term Debt [Line Items]
Consolidated obligation	$ 852,800,000	$ 847,200,000
Book value
Discount Note [Abstract]
Discount Notes	11,802,629	12,567,696
Book value | CO Bonds
CO Bonds [Abstract]
Bonds	29,647,600	25,503,138
Par value
Discount Note [Abstract]
Discount Notes	11,807,026	12,570,811
CO Bonds [Abstract]
Bonds	$ 29,632,575	$ 25,498,810

Affordable Housing Program (Det

Affordable Housing Program (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Affordable Housing Program Funding Obligation [Roll Forward]
Balance at beginning of period		$ 35,759	$ 43,211	$ 36,899	$ 42,778
Assessment (expense)		3,801	3,727	7,217	7,616
Subsidy usage, net	[1]	(4,440)	(3,476)	(8,996)	(6,932)
Balance at end of period		$ 35,120	$ 43,462	$ 35,120	$ 43,462
[1]	Subsidies disbursed are reported net of returns/recaptures of previously disbursed subsidies.

Capital (Details)

Capital (Details) $ in Thousands	3 Months Ended		6 Months Ended		12 Months Ended
	Jun. 30, 2015USD ($)	Jun. 30, 2014USD ($)	Jun. 30, 2015USD ($)Member	Jun. 30, 2014USD ($)	Dec. 31, 2014USD ($)Member
Capital [Abstract]
Number of stockholders | Member			8		8
Regulatory Capital Requirements [Abstract]
Federal Home Loan Bank, Risk-Based Capital, Required	$ 555,561		$ 555,561		$ 566,683
Federal Home Loan Bank, Risk-Based Capital, Actual	$ 2,212,501		$ 2,212,501		$ 2,344,283
Regulatory permanent capital-to-asset ratio, Required	4.00%		4.00%		4.00%
Federal Home Loan Bank, Regulatory Capital Ratio, Actual	4.89%		4.89%		5.60%
Federal Home Loan Bank, Regulatory Capital, Required	$ 1,809,461		$ 1,809,461		$ 1,674,121
Federal Home Loan Bank, Regulatory Capital, Actual	$ 2,212,501		$ 2,212,501		$ 2,344,283
Leverage ratio, Required	5.00%		5.00%		5.00%
Federal Home Loan Bank, Leverage Ratio, Actual			7.34%		8.40%
Federal Home Loan Bank, Leverage Capital, Required	$ 2,261,826		$ 2,261,826		$ 2,092,652
Federal Home Loan Bank, Leverage Capital, Actual	3,318,752		3,318,752		3,516,425
Mandatorily Redeemable Capital Stock Acitvity [Roll Forward]
Liability at beginning of period	15,553	$ 16,786	15,673	$ 16,787	16,787
Redemptions/repurchases	(1,212)	(1)	(1,332)	(2)
Liability at end of period	14,341	16,785	14,341	16,785	$ 15,673
Recorded as interest expense	122	135	256	745
Recorded as distributions from retained earnings	0	0	0	0
Total	$ 122	$ 135	$ 256	$ 745
Excess and Surplus Capital Stock [Abstract]
Excess Capital Stock to Assets Allowed	1.00%		1.00%
Excess Capital Stock	$ 148,739		$ 148,739
Excess Capital Stock to Assets	0.30%		0.30%

Accumulated Other Comprehensi70

Accumulated Other Comprehensive Income (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Accumulated Other Comprehensive Income [Roll Forward]
Net change in fair value	$ (107)	$ 38	$ (106)	$ (181)
Pension benefits, net	(1,075)	(208)	(827)	(72)
Total other comprehensive income (loss)	(3,218)	9,064	(3,812)	25,457
Accumulated Other Comprehensive Income (Loss) [Member]
Accumulated Other Comprehensive Income [Roll Forward]
AOCI Balance, Beginning	46,066	38,113	46,660	21,720
Net change in unrealized gains (losses)	(2,080)	9,157	(2,935)	25,450
Net change in fair value	(107)	38	(106)	(181)
Accretion of non-credit loss	12	19	24	32
Non-credit portion of OTTI losses	32	58	32	228
Pension benefits, net	(1,075)	(208)	(827)	(72)
Total other comprehensive income (loss)	(3,218)	9,064	(3,812)	25,457
AOCI Balance, Ending	42,848	47,177	42,848	47,177
Unrealized Gains on AFS Securities | Available-for-sale Securities
Accumulated Other Comprehensive Income [Roll Forward]
AOCI Balance, Beginning	17,582	12,356	16,078	317
Net change in unrealized gains (losses)	(2,908)	538	(1,404)	12,577
Total other comprehensive income (loss)	(2,908)	538	(1,404)	12,577
AOCI Balance, Ending	14,674	12,894	14,674	12,894
Non-Credit OTTI | Available-for-sale Securities
Accumulated Other Comprehensive Income [Roll Forward]
AOCI Balance, Beginning	35,814	30,141	38,172	25,936
Net change in unrealized gains (losses)	828	8,619	(1,531)	12,873
Net change in fair value	(107)	38	(106)	(181)
Non-credit portion of OTTI losses	32	58	32	228
Total other comprehensive income (loss)	753	8,715	(1,605)	12,920
AOCI Balance, Ending	36,567	38,856	36,567	38,856
Non-Credit OTTI | HTM Securities
Accumulated Other Comprehensive Income [Roll Forward]
AOCI Balance, Beginning	(163)	(228)	(175)	(241)
Accretion of non-credit loss	12	19	24	32
Total other comprehensive income (loss)	12	19	24	32
AOCI Balance, Ending	(151)	(209)	(151)	(209)
Pension Benefits
Accumulated Other Comprehensive Income [Roll Forward]
AOCI Balance, Beginning	(7,167)	(4,156)	(7,415)	(4,292)
Pension benefits, net	(1,075)	(208)	(827)	(72)
Total other comprehensive income (loss)	(1,075)	(208)	(827)	(72)
AOCI Balance, Ending	$ (8,242)	$ (4,364)	$ (8,242)	$ (4,364)

Segment Information (Details)

Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Segment Reporting Information [Line Items]
Net interest income	$ 47,298	$ 43,695	$ 96,037	$ 91,281
Provision for (reversal of) credit losses	(951)	(86)	(388)	(790)
Other income (loss)	7,941	9,962	11,517	15,847
Other expenses	18,304	16,608	36,031	32,507
Income before assessments	37,886	37,135	71,911	75,411
Affordable Housing Program assessments	3,801	3,727	7,217	7,616
Net Income	34,085	33,408	64,694	67,795
Assets	45,236,517		45,236,517		$ 41,853,032
Traditional
Segment Reporting Information [Line Items]
Net interest income	31,746	27,954	62,667	58,952
Provision for (reversal of) credit losses	0	0	0	0
Other income (loss)	8,800	10,583	13,664	16,466
Other expenses	15,575	14,461	30,672	28,243
Income before assessments	24,971	24,076	45,659	47,175
Affordable Housing Program assessments	2,510	2,421	4,592	4,792
Net Income	22,461	21,655	41,067	42,383
Assets	37,303,793		37,303,793		35,032,770
Mortgage Loans
Segment Reporting Information [Line Items]
Net interest income	15,552	15,741	33,370	32,329
Provision for (reversal of) credit losses	(951)	(86)	(388)	(790)
Other income (loss)	(859)	(621)	(2,147)	(619)
Other expenses	2,729	2,147	5,359	4,264
Income before assessments	12,915	13,059	26,252	28,236
Affordable Housing Program assessments	1,291	1,306	2,625	2,824
Net Income	11,624	$ 11,753	23,627	$ 25,412
Assets	$ 7,932,724		$ 7,932,724		$ 6,820,262

Estimated Fair Values (Carrying

Estimated Fair Values (Carrying Value and Fair Value of Financial Instruments) (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013
Assets:
Interest-bearing deposits		$ 251		$ 483
AFS securities		3,570,926		3,556,165
HTM securities		6,590,575		7,098,616
Derivative assets, net		41,763		25,487
Netting adjustment	[1],[2]	(16,583)		(30,961)
Consolidated Obligations:
Derivative liabilities, net (Note 9)		95,634		103,253
Netting adjustment	[1],[2]	(180,049)		(230,665)
MRCS		14,341	$ 15,553	15,673	$ 16,785	$ 16,786	$ 16,787
Level 1 [Member]
Assets:
Cash and due from banks		635,017		3,550,939
Interest-bearing deposits		0		0
Securities Purchased Under Agreements to Resell		0
Federal funds sold		0
AFS securities		0		0
HTM securities		0		0
Advances		0		0
Mortgage loans held for portfolio, net		0		0
Accrued interest receivable		0		0
Derivative assets, net		0		0
Grantor trust assets (included in other assets)		13,025		12,980
Liabilities:
Deposits		0		0
Consolidated Obligations:
Discount notes		0		0
Bonds		0		0
Accrued interest payable		0		0
Derivative liabilities, net (Note 9)		0		0
MRCS		14,341		15,673
Level 2 [Member]
Assets:
Cash and due from banks		0		0
Interest-bearing deposits		251		483
Securities Purchased Under Agreements to Resell		200,000
Federal funds sold		1,895,000
AFS securities		3,206,207		3,155,115
HTM securities		6,493,727		6,987,768
Advances		24,381,257		20,844,701
Mortgage loans held for portfolio, net		8,132,629		7,078,490
Accrued interest receivable		86,971		82,866
Derivative assets, net		58,346		56,448
Grantor trust assets (included in other assets)		0		0
Liabilities:
Deposits		1,163,762		1,084,042
Consolidated Obligations:
Discount notes		11,807,026		12,570,811
Bonds		29,971,732		25,882,934
Accrued interest payable		83,461		77,034
Derivative liabilities, net (Note 9)		275,683		333,918
MRCS		0		0
Level 3 [Member]
Assets:
Cash and due from banks		0		0
Interest-bearing deposits		0		0
Securities Purchased Under Agreements to Resell		0
Federal funds sold		0
AFS securities		364,719		401,050
HTM securities		96,848		110,848
Advances		0		0
Mortgage loans held for portfolio, net		34,251		42,445
Accrued interest receivable		0		0
Derivative assets, net		0		0
Grantor trust assets (included in other assets)		0		0
Liabilities:
Deposits		0		0
Consolidated Obligations:
Discount notes		0		0
Bonds		0		0
Accrued interest payable		0		0
Derivative liabilities, net (Note 9)		0		0
MRCS		0		0
Fair Value
Assets:
Cash and due from banks		635,017		3,550,939
Interest-bearing deposits		251		483
Securities Purchased Under Agreements to Resell		200,000
Federal funds sold		1,895,000
AFS securities		3,570,926		3,556,165
HTM securities		6,590,575		7,098,616
Advances		24,381,257		20,844,701
Mortgage loans held for portfolio, net		8,166,880		7,120,935
Accrued interest receivable		86,971		82,866
Derivative assets, net		41,763		25,487
Grantor trust assets (included in other assets)		13,025		12,980
Liabilities:
Deposits		1,163,762		1,084,042
Consolidated Obligations:
Discount notes		11,807,026		12,570,811
Bonds		29,971,732		25,882,934
Accrued interest payable		83,461		77,034
Derivative liabilities, net (Note 9)		95,634		103,253
MRCS		14,341		15,673
Book value
Assets:
Cash and due from banks		635,017		3,550,939
Interest-bearing deposits		251		483
Securities Purchased Under Agreements to Resell		200,000
Federal funds sold		1,895,000
AFS securities		3,570,926		3,556,165
HTM securities		6,481,002		6,982,115
Advances		24,318,357		20,789,667
Mortgage loans held for portfolio, net		7,932,724		6,820,262
Accrued interest receivable		86,971		82,866
Derivative assets, net		41,763		25,487
Grantor trust assets (included in other assets)		13,025		12,980
Liabilities:
Deposits		1,163,762		1,084,042
Consolidated Obligations:
Discount notes		11,802,629		12,567,696
Bonds		29,647,600		25,503,138
Accrued interest payable		83,461		77,034
Derivative liabilities, net (Note 9)		95,634		103,253
MRCS		$ 14,341		$ 15,673
[1]	Represents the application of the netting requirements that allow the settlement of (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty.
[2]	Represents the application of the netting requirements that allow us to settle (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty. Cash collateral placed at June 30, 2015 and December 31, 2014 was $165,007 and $201,284, respectively. Cash collateral held at June 30, 2015 and December 31, 2014 was $1,540 and $1,580, respectively.

Estimated Fair Values (Estimate

Estimated Fair Values (Estimated Fair Value on a Recurring and Non-Recurring Basis) (Details) - USD ($) $ in Thousands		Jun. 30, 2015		Dec. 31, 2014
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		$ 3,570,926		$ 3,556,165
Derivative assets:
Derivative assets, net		41,763		25,487
Netting adjustment	[1],[2]	(16,583)		(30,961)
Derivative liabilities:
Derivative liabilities, net		95,634		103,253
Netting adjustment	[1],[2]	(180,049)		(230,665)
GSE MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		78,454
Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		0		0
Mortgage loans held for portfolio (2)		0		0
Derivative assets:
Derivative assets, net		0		0
Grantor trust assets (included in other assets)		13,025		12,980
Derivative liabilities:
Derivative liabilities, net		0		0
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		3,206,207		3,155,115
Mortgage loans held for portfolio (2)		8,132,629		7,078,490
Derivative assets:
Derivative assets, net		58,346		56,448
Grantor trust assets (included in other assets)		0		0
Derivative liabilities:
Derivative liabilities, net		275,683		333,918
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		364,719		401,050
Mortgage loans held for portfolio (2)		34,251		42,445
Derivative assets:
Derivative assets, net		0		0
Grantor trust assets (included in other assets)		0		0
Derivative liabilities:
Derivative liabilities, net		0		0
Fair Value, Measurements, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		3,570,926		3,556,165
Derivative assets:
Derivative assets, net		41,763		25,487
Netting adjustment	[3]	(16,583)		(30,961)
Grantor trust assets (included in other assets)		13,025		12,980
Total assets at recurring estimated fair value		3,625,714		3,594,632
Derivative liabilities:
Derivative liabilities, net		95,634		103,253
Netting adjustment	[3]	(180,049)		(230,665)
Total liabilities at recurring estimated fair value		95,634		103,253
Fair Value, Measurements, Recurring [Member] | Interest Rate Contract
Derivative assets:
Derivative assets, net		41,361		24,776
Netting adjustment		(16,583)	[3]	(30,961)
Derivative liabilities:
Derivative liabilities, net		95,134		101,616
Netting adjustment	[3]	(180,049)		(230,665)
Fair Value, Measurements, Recurring [Member] | MDCs
Derivative assets:
Derivative assets, net		223		711
Netting adjustment		0	[3]	0
Derivative liabilities:
Derivative liabilities, net		467		6
Netting adjustment		0	[3]	0
Fair Value, Measurements, Recurring [Member] | GSE and TVA Debentures [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		3,127,753		3,155,115
Fair Value, Measurements, Recurring [Member] | GSE MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		78,454
Fair Value, Measurements, Recurring [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		364,719		401,050
Fair Value, Measurements, Recurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		0		0
Derivative assets:
Derivative assets, net		0		0
Grantor trust assets (included in other assets)		13,025		12,980
Total assets at recurring estimated fair value		13,025		12,980
Derivative liabilities:
Derivative liabilities, net		0		0
Total liabilities at recurring estimated fair value		0		0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Interest Rate Contract
Derivative assets:
Derivative assets, net		0		0
Derivative liabilities:
Derivative liabilities, net		0		0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | MDCs
Derivative assets:
Derivative assets, net		0		0
Derivative liabilities:
Derivative liabilities, net		0		0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | GSE and TVA Debentures [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		0		0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | GSE MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		0
Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		0		0
Fair Value, Measurements, Recurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		3,206,207		3,155,115
Derivative assets:
Derivative assets, net		58,346		56,448
Grantor trust assets (included in other assets)		0		0
Total assets at recurring estimated fair value		3,264,553		3,211,563
Derivative liabilities:
Derivative liabilities, net		275,683		333,918
Total liabilities at recurring estimated fair value		275,683		333,918
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Interest Rate Contract
Derivative assets:
Derivative assets, net		57,944		55,737
Derivative liabilities:
Derivative liabilities, net		275,183		332,281
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | MDCs
Derivative assets:
Derivative assets, net		223		711
Derivative liabilities:
Derivative liabilities, net		467		6
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | GSE and TVA Debentures [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		3,127,753		3,155,115
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | GSE MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		78,454
Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		0		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		364,719		401,050
Derivative assets:
Derivative assets, net		0		0
Grantor trust assets (included in other assets)		0		0
Total assets at recurring estimated fair value		364,719		401,050
Derivative liabilities:
Derivative liabilities, net		0		0
Total liabilities at recurring estimated fair value		0		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Interest Rate Contract
Derivative assets:
Derivative assets, net		0		0
Derivative liabilities:
Derivative liabilities, net		0		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | MDCs
Derivative assets:
Derivative assets, net		0		0
Derivative liabilities:
Derivative liabilities, net		0		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | GSE and TVA Debentures [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		0		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | GSE MBS
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		0
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Mortgage-backed Securities, Issued by Private Enterprises [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
AFS securities:		364,719		401,050
Fair Value, Measurements, Nonrecurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for portfolio (2)		5,018
Total assets at non-recurring estimated fair value		5,018
Fair Value, Measurements, Nonrecurring [Member] | Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for portfolio (2)		0
Total assets at non-recurring estimated fair value		0
Fair Value, Measurements, Nonrecurring [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for portfolio (2)		0
Total assets at non-recurring estimated fair value		0
Fair Value, Measurements, Nonrecurring [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Mortgage loans held for portfolio (2)		5,018
Total assets at non-recurring estimated fair value		5,018
Interest-rate forwards | Fair Value, Measurements, Recurring [Member] | Interest Rate Contract
Derivative assets:
Derivative assets, net		179
Netting adjustment	[3]	0
Derivative liabilities:
Derivative liabilities, net		33		1,631
Netting adjustment		0	[3]	0
Interest-rate forwards | Fair Value, Measurements, Recurring [Member] | Level 1 [Member] | Interest Rate Contract
Derivative assets:
Derivative assets, net		0
Derivative liabilities:
Derivative liabilities, net		0		0
Interest-rate forwards | Fair Value, Measurements, Recurring [Member] | Level 2 [Member] | Interest Rate Contract
Derivative assets:
Derivative assets, net		179
Derivative liabilities:
Derivative liabilities, net		33		1,631
Interest-rate forwards | Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Interest Rate Contract
Derivative assets:
Derivative assets, net		0
Derivative liabilities:
Derivative liabilities, net		$ 0		$ 0
[1]	Represents the application of the netting requirements that allow the settlement of (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty.
[2]	Represents the application of the netting requirements that allow us to settle (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty. Cash collateral placed at June 30, 2015 and December 31, 2014 was $165,007 and $201,284, respectively. Cash collateral held at June 30, 2015 and December 31, 2014 was $1,540 and $1,580, respectively.
[3]	Represents the application of the netting requirements that allow the settlement of (i) positive and negative positions and (ii) cash collateral and related accrued interest held or placed, with the same clearing agent and/or counterparty.(2)

Estimated Fair Values (Level 3

Estimated Fair Values (Level 3 Reconciliation) (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Net change in fair value not in excess of cumulative non-credit losses in OCI	$ (107)	$ 38	$ (106)	$ (181)
Fair Value, Measurements, Recurring [Member] | Level 3 [Member] | Private-label RMBS - prime
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Balance, beginning of period	380,835	455,812	401,050	469,685
Accretion of credit losses in interest income	2,242	853	3,361	874
Net gains (losses) on changes in fair value in other income (loss)	(32)	(58)	(32)	(228)
Net change in fair value not in excess of cumulative non-credit losses in OCI	(107)	38	(106)	(181)
Unrealized gains (losses) in OCI	828	8,619	(1,531)	12,873
Reclassification of non-credit portion in OCI to other income (loss)	32	58	32	228
Settlements	(19,079)	(22,610)	(38,055)	(40,539)
Balance, end of period	364,719	442,712	364,719	442,712
Net gains (losses) included in earnings attributable to changes in fair value relating to assets still held at end of period	$ 2,210	$ 795	$ 3,329	$ 646

Commitments and Contingencies75

Commitments and Contingencies (Details) - USD ($)		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Loss Contingencies [Line Items]
Cash collateral pledged		$ 164,994,000		$ 164,994,000		$ 201,267,000
Gain from litigation settlement		0	$ 6,134,000	4,732,000	$ 8,548,000
Letters of credit outstanding
Loss Contingencies [Line Items]
Off-balance-sheet commitments expire within one year		43,944,000		43,944,000
Off-balance-sheet commitments expire after one year		158,627,000		158,627,000
Off-balance-sheet commitments, Total		202,571,000		202,571,000
Unused lines of credit
Loss Contingencies [Line Items]
Off-balance-sheet commitments expire within one year	[1]	994,593,000		994,593,000
Off-balance-sheet commitments expire after one year	[1]	0		0
Off-balance-sheet commitments, Total	[1]	994,593,000		994,593,000
Commitments to fund additional advances
Loss Contingencies [Line Items]
Off-balance-sheet commitments expire within one year	[2]	99,988,000		99,988,000
Off-balance-sheet commitments expire after one year	[2]	0		0
Off-balance-sheet commitments, Total	[2]	99,988,000		99,988,000
Commitments to fund or purchase mortgage loans
Loss Contingencies [Line Items]
Off-balance-sheet commitments expire within one year	[3]	174,189,000		174,189,000
Off-balance-sheet commitments expire after one year	[3]	0		0
Off-balance-sheet commitments, Total	[3]	174,189,000		174,189,000
Unsettled CO bonds, at par
Loss Contingencies [Line Items]
Off-balance-sheet commitments expire within one year	[4]	20,500,000		20,500,000
Off-balance-sheet commitments expire after one year	[4]	0		0
Off-balance-sheet commitments, Total	[4]	20,500,000		$ 20,500,000
Maximum
Loss Contingencies [Line Items]
Commitments to fund additional Advances are generally for periods up				6 months
Letters of Credit
Loss Contingencies [Line Items]
Maximum line of credit		50,000,000		$ 50,000,000
Unsecured Debt | Interest-rate swaps
Loss Contingencies [Line Items]
Off-balance-sheet commitments, Total		$ 15,000,000		$ 15,000,000
[1]	Maximum line of credit amount per member is $50,000
[2]	Generally for periods up to six months.
[3]	Generally for periods up to 91 days.
[4]	Includes $15,000 hedged with associated interest-rate swaps.

Transactions with Related Par76

Transactions with Related Parties and Other Entities (Details) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014	Dec. 31, 2014
Related Party Transaction [Line Items]
Total advances, par value		$ 24,185,465		$ 24,185,465		$ 20,630,202
Total mortgage loans held for portfolio, UPB		7,779,798		7,779,798		6,704,442
Mortgage loans purchased				1,827,183	$ 472,545
Service fees		200	$ 227	388	442
Flagstar Bank, FSB
Related Party Transaction [Line Items]
Net advances to (repayments from)			(93,295)		43,705
Directors' Financial Institutions
Related Party Transaction [Line Items]
Capital Stock, including MRCS, par value		$ 27,128		$ 27,128		$ 40,213
Capital Stock, including MRCS, % of Total		2.00%		2.00%		3.00%
Total advances, par value		$ 258,526		$ 258,526		$ 261,146
Advances, % of Total		1.00%		1.00%		1.00%
Total mortgage loans held for portfolio, UPB	[1]	$ 176,920		$ 176,920		$ 167,072
Mortgage Loans Held for Portfolio, % of Total	[1]	2.00%		2.00%		2.00%
Net advances to (repayments from)		$ (2,258)	(12,401)	$ (2,620)	(24,736)
Mortgage loans purchased		13,734	6,181	21,124	10,916
FHLBank of Topeka
Related Party Transaction [Line Items]
Payments for participation interests			0		11,011
FHLBank of Chicago
Related Party Transaction [Line Items]
Service fees		$ 67	$ 75	$ 136	$ 150
[1]	Represents UPB of mortgage loans purchased from directors' financial institutions.

Uncategorized Items - fhlbi-201

Label	Element	Value
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	$ 32
Other than Temporary Impairment Losses, Investments, Portion Recognized in Earnings, Net	us-gaap_OtherThanTemporaryImpairmentLossesInvestmentsPortionRecognizedInEarningsNet	$ 58