Federal Home Loan Bank of Topeka 10-Q 10 May 18 2018 Q1 Quarterly report Financial data

Document And Entity Information

Document And Entity Information - shares	3 Months Ended
	Mar. 31, 2018	May 08, 2018
Entity Information [Line Items]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Mar. 31, 2018
Document Fiscal Year Focus	2,018
Document Fiscal Period Focus	Q1
Entity Registrant Name	Federal Home Loan Bank of Topeka
Entity Central Index Key	1,325,878
Current Fiscal Year End Date	--12-31
Entity Filer Category	Non-accelerated Filer
Class A [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		2,700,734
Class B [Member]
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		14,346,458

Statements Of Condition

Statements Of Condition - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
ASSETS
Cash and due from banks		$ 25,333	$ 268,050
Interest-bearing deposits		880,799	442,682
Securities purchased under agreements to resell (Note 10)		3,206,045	3,161,446
Federal funds sold		4,282,000	1,175,000
Investment securities:
Trading securities (Note 3)		3,403,665	2,869,415
Available-for-sale securities (Note 3)		1,538,448	1,493,231
Held-to-maturity securities1 (Note 3)	[1]	5,126,814	4,856,825
Total investment securities		10,068,927	9,219,471
Advances (Notes 4, 6)		26,978,350	26,295,849
Mortgage loans held for portfolio, net:
Mortgage loans held for portfolio (Notes 5, 6)		7,466,661	7,287,605
Less allowance for credit losses on mortgage loans (Note 6)		(1,057)	(1,208)
Mortgage loans held for portfolio, net		7,465,604	7,286,397
Accrued interest receivable		96,742	85,547
Premises, software and equipment, net		48,739	47,670
Derivative assets, net (Notes 7, 10)		40,945	37,030
Other assets		56,365	57,463
TOTAL ASSETS		53,149,849	48,076,605
LIABILITIES
Deposits (Note 8)		623,322	461,769
Consolidated obligations, net:
Discount notes (Note 9)		22,606,383	20,420,651
Bonds (Note 9)		27,236,839	24,514,468
Total consolidated obligations, net		49,843,222	44,935,119
Mandatorily redeemable capital stock (Note 11)		5,029	5,312
Accrued interest payable		74,485	56,116
Affordable Housing Program payable		45,360	43,005
Derivative liabilities, net (Notes 7, 10)		1,259	2,417
Other liabilities		74,087	66,764
TOTAL LIABILITIES		50,666,764	45,570,502
Commitments and contingencies (Note 14)
Capital stock outstanding - putable:
Total capital stock (Notes 11)	[2]	1,598,736	1,640,039
Retained earnings:
Unrestricted		682,910	676,993
Restricted		171,331	163,413
Total retained earnings		854,241	840,406
Accumulated other comprehensive income (loss) (Note 12)		30,108	25,658
TOTAL CAPITAL		2,483,085	2,506,103
TOTAL LIABILITIES AND CAPITAL		53,149,849	48,076,605
Class A [Member]
Capital stock outstanding - putable:
Total capital stock (Notes 11)	[2]	166,288	235,134
Class B [Member]
Capital stock outstanding - putable:
Total capital stock (Notes 11)	[2]	$ 1,432,448	$ 1,404,905
[1]	Fair value: $5,126,008 and $4,856,996 as of March 31, 2018 and December 31, 2017, respectively.
[2]	Putable

Statements Of Condition (Parent

Statements Of Condition (Parenthetical) - USD ($) shares in Thousands, $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Investment securities:
Held-to-maturity Securities, Fair Value		$ 5,126,008	$ 4,856,996
Capital stock outstanding - putable:
Common Stock, par value per share		$ 100
Class A [Member]
Capital stock outstanding - putable:
Common Stock, par value per share	[1]	$ 100	$ 100
Common Stock, Shares, Issued	[1]	1,663	2,351
Common Stock, Shares Outstanding	[1]	1,663	2,351
Class B [Member]
Capital stock outstanding - putable:
Common Stock, par value per share	[1]	$ 100	$ 100
Common Stock, Shares, Issued	[1]	14,324	14,049
Common Stock, Shares Outstanding	[1]	14,324	14,049
[1]	Putable

Statements Of Income

Statements Of Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
INTEREST INCOME:
Interest-bearing deposits	$ 2,236	$ 648
Securities purchased under agreements to resell	11,430	4,150
Federal funds sold	10,589	4,290
Trading securities	16,587	14,929
Available-for-sale securities	8,862	4,432
Held-to-maturity securities	25,327	14,852
Advances	140,787	72,887
Prepayment fees on terminated advances, net	31	870
Mortgage loans held for portfolio	59,535	52,578
Other	409	301
Total interest income	275,793	169,937
INTEREST EXPENSE:
Deposits	1,614	582
Consolidated obligations:
Discount notes	94,978	35,488
Bonds	112,432	67,103
Mandatorily redeemable capital stock (Note 11)	61	14
Other	229	78
Total interest expense	209,314	103,265
NET INTEREST INCOME	66,479	66,672
(Reversal) provision for credit losses on mortgage loans (Note 6)	30	(45)
NET INTEREST INCOME AFTER LOAN LOSS (REVERSAL) PROVISION	66,449	66,717
OTHER INCOME (LOSS):
Total other-than-temporary impairment losses on held-to-maturity securities	0	(4)
Net amount of impairment losses on held-to-maturity securities reclassified to/(from) accumulated other comprehensive income (loss)	(22)	(33)
Net other-than-temporary impairment losses on held-to-maturity securities (Note 3)	(22)	(37)
Net gains (losses) on trading securities (Note 3)	(26,950)	4,687
Net gains (losses) on sale of held-to-maturity securities (Note 3)	34	0
Net gains (losses) on derivatives and hedging activities (Note 7)	16,643	603
Standby bond purchase agreement commitment fees	848	1,160
Letters of credit fees	1,066	938
Other	1,394	534
Total other income (loss)	(6,987)	7,885
OTHER EXPENSES:
Compensation and benefits	8,330	8,227
Other operating	4,185	3,730
Federal Housing Finance Agency	764	752
Office of Finance	784	778
Other	1,402	1,429
Total other expenses	15,465	14,916
INCOME BEFORE ASSESSMENTS	43,997	59,686
Affordable Housing Program	4,406	5,970
NET INCOME	$ 39,591	$ 53,716

Statements Of Comprehensive Inc

Statements Of Comprehensive Income - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net income	$ 39,591	$ 53,716
Other comprehensive income (loss):
Net unrealized gains (losses) on available-for-sale securities	4,142	8,485
Net non-credit portion of other-than-temporary impairment losses on held-to-maturity securities	301	409
Defined benefit pension plan	7	57
Total other comprehensive income (loss)	4,450	8,951
TOTAL COMPREHENSIVE INCOME	$ 44,041	$ 62,667

Statements Of Capital

Statements Of Capital - USD ($) shares in Thousands, $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of the period		$ 2,506,103	$ 1,962,448
Comprehensive income		44,041	62,667
Proceeds from issuance of capital stock		272,375	438,700
Repurchase/redemption of capital stock		(238,974)	(160,927)
Net reclassification of shares to mandatorily redeemable capital stock		(100,390)	(173,395)
Net transfer of shares between Class A and Class B		0	0
Dividends on capital stock
Cash payment		(70)	(64)
Stock issued		0	0
Balance at the end of the period		$ 2,483,085	$ 2,129,429
Capital Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares, beginning balance	[1]	16,400	12,266
Balance at the beginning of the period	[1]	$ 1,640,039	$ 1,226,675
Proceeds from issuance of capital stock, shares	[1]	2,724	4,387
Proceeds from issuance of capital stock	[1]	$ 272,375	$ 438,700
Repurchase/redemption of capital stock, shares	[1]	(2,390)	(1,609)
Repurchase/redemption of capital stock	[1]	$ (238,974)	$ (160,927)
Net reclassification of shares to mandatorily redeemable capital stock, shares	[1]	(1,004)	(1,733)
Net reclassification of shares to mandatorily redeemable capital stock	[1]	$ (100,390)	$ (173,395)
Net transfer of shares between Class A and Class B, shares	[1]	0	0
Net transfer of shares between Class A and Class B	[1]	$ 0	$ 0
Dividends on capital stock
Stock issued, shares	[1]	257	213
Stock issued	[1]	$ 25,686	$ 21,292
Shares, ending balance	[1]	15,987	13,524
Balance at the end of the period	[1]	$ 1,598,736	$ 1,352,345
Total Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of the period		840,406	735,196
Comprehensive income		39,591	53,716
Dividends on capital stock
Cash payment		(70)	(64)
Stock issued		(25,686)	(21,292)
Balance at the end of the period		854,241	767,556
Unrestricted Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of the period		676,993	611,226
Comprehensive income		31,673	42,972
Dividends on capital stock
Cash payment		(70)	(64)
Stock issued		(25,686)	(21,292)
Balance at the end of the period		682,910	632,842
Restricted Retained Earnings [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of the period		163,413	123,970
Comprehensive income		7,918	10,744
Dividends on capital stock
Balance at the end of the period		171,331	134,714
Accumulated Other Comprehensive Income (Loss) [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Balance at the beginning of the period		25,658	577
Comprehensive income		4,450	8,951
Dividends on capital stock
Balance at the end of the period		$ 30,108	$ 9,528
Class A [Member] | Capital Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares, beginning balance	[1]	2,351	1,621
Balance at the beginning of the period	[1]	$ 235,134	$ 162,143
Proceeds from issuance of capital stock, shares	[1]	3	0
Proceeds from issuance of capital stock	[1]	$ 323	$ 31
Repurchase/redemption of capital stock, shares	[1]	(2,369)	(1,605)
Repurchase/redemption of capital stock	[1]	$ (236,937)	$ (160,498)
Net reclassification of shares to mandatorily redeemable capital stock, shares	[1]	(391)	(4)
Net reclassification of shares to mandatorily redeemable capital stock	[1]	$ (39,140)	$ (485)
Net transfer of shares between Class A and Class B, shares	[1]	2,069	1,726
Net transfer of shares between Class A and Class B	[1]	$ 206,908	$ 172,565
Dividends on capital stock
Shares, ending balance	[1]	1,663	1,738
Balance at the end of the period	[1]	$ 166,288	$ 173,756
Class B [Member] | Capital Stock [Member]
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Shares, beginning balance	[1]	14,049	10,645
Balance at the beginning of the period	[1]	$ 1,404,905	$ 1,064,532
Proceeds from issuance of capital stock, shares	[1]	2,721	4,387
Proceeds from issuance of capital stock	[1]	$ 272,052	$ 438,669
Repurchase/redemption of capital stock, shares	[1]	(21)	(4)
Repurchase/redemption of capital stock	[1]	$ (2,037)	$ (429)
Net reclassification of shares to mandatorily redeemable capital stock, shares	[1]	(613)	(1,729)
Net reclassification of shares to mandatorily redeemable capital stock	[1]	$ (61,250)	$ (172,910)
Net transfer of shares between Class A and Class B, shares	[1]	(2,069)	(1,726)
Net transfer of shares between Class A and Class B	[1]	$ (206,908)	$ (172,565)
Dividends on capital stock
Stock issued, shares	[1]	257	213
Stock issued	[1]	$ 25,686	$ 21,292
Shares, ending balance	[1]	14,324	11,786
Balance at the end of the period	[1]	$ 1,432,448	$ 1,178,589
[1]	Putable

Statements Of Capital (Parenthe

Statements Of Capital (Parenthetical) - Capital Stock [Member]	3 Months Ended
	Mar. 31, 2018Rate	Mar. 31, 2017Rate
Class A [Member]
Stock dividend rate percentage	1.50%	1.00%
Class B [Member]
Stock dividend rate percentage	6.70%	6.50%

Statements Of Cash Flows

Statements Of Cash Flows - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
CASH FLOWS FROM OPERATING ACTIVITIES:
Net income	$ 39,591	$ 53,716
Adjustments to reconcile income (loss) to net cash provided by (used in) operating activities:
Premiums and discounts on consolidated obligations, net	4,803	(32)
Concessions on consolidated obligations	1,369	1,151
Premiums and discounts on investments, net	783	691
Premiums, discounts and commitment fees on advances, net	(1,304)	(1,543)
Premiums, discounts and deferred loan costs on mortgage loans, net	4,184	4,328
Fair value adjustments on hedged assets or liabilities	453	1,272
Premises, software and equipment	791	498
Other	7	57
(Reversal) provision for credit losses on mortgage loans	30	(45)
Non-cash interest on mandatorily redeemable capital stock	61	13
Net realized (gains) losses on sale of held-to-maturity securities	(34)	0
Net other-than-temporary impairment losses on held-to-maturity securities	22	37
Net realized (gains) losses on sale of premises and equipment	(879)	0
Other adjustments	(132)	12
Net (gains) losses on trading securities	26,950	(4,687)
(Gains) losses due to change in net fair value adjustment on derivative and hedging activities	22,370	5,955
(Increase) decrease in accrued interest receivable	(11,187)	(4,138)
Change in net accrued interest included in derivative assets	(3,989)	(6,460)
(Increase) decrease in other assets	988	(104)
Increase (decrease) in accrued interest payable	18,464	11,090
Change in net accrued interest included in derivative liabilities	(273)	(504)
Increase (decrease) in Affordable Housing Program liability	2,355	4,162
Increase (decrease) in other liabilities	(9,117)	(5,602)
Total adjustments	56,715	6,151
NET CASH PROVIDED BY (USED IN) OPERATING ACTIVITIES	96,306	59,867
CASH FLOWS FROM INVESTING ACTIVITIES:
Net (increase) decrease in interest-bearing deposits	(440,909)	4,423
Net (increase) decrease in securities purchased under resale agreements	(44,599)	(100,000)
Net (increase) decrease in Federal funds sold	(3,107,000)	20,000
Net (increase) decrease in short-term trading securities	(715,000)	(200,000)
Proceeds from maturities of and principal repayments on long-term trading securities	153,799	5,159
Proceeds from maturities of and principal repayments on long-term available-for-sale securities	2,260	1,241
Purchases of long-term available-for-sale securities	(79,178)	(30,408)
Proceeds from sale of held-to-maturity securities	8,406	0
Proceeds from maturities of and principal repayments on long-term held-to-maturity securities	203,664	218,349
Purchases of long-term held-to-maturity securities	(466,981)	(524,988)
Advances repaid	102,395,193	116,198,905
Advances originated	(103,131,501)	(118,053,563)
Principal collected on mortgage loans	201,174	226,724
Purchases of mortgage loans	(387,768)	(292,016)
Proceeds from sale of foreclosed assets	1,722	45
Other investing activities	678	619
Net (increase) decrease in loans to other FHLBanks	0	600,000
Proceeds from sale of premises, software and equipment	2,414	48
Purchases of premises, software and equipment	(2,216)	(5,012)
NET CASH PROVIDED BY (USED IN) INVESTING ACTIVITIES	(5,405,842)	(1,930,474)
CASH FLOWS FROM FINANCING ACTIVITIES:
Net increase (decrease) in deposits	217,732	(4,966)
Net proceeds from issuance of consolidated obligations:
Discount notes	260,985,732	229,023,531
Bonds	6,563,236	2,927,114
Payments for maturing and retired consolidated obligations:
Discount notes	(258,807,777)	(228,296,599)
Bonds	(3,821,750)	(1,973,230)
Net interest payments received (paid) for financing derivatives	(2,951)	(7,900)
Proceeds from issuance of capital stock	272,375	438,700
Payments for repurchase/redemption of capital stock	(238,974)	(160,927)
Payments for repurchase of mandatorily redeemable capital stock	(100,734)	(173,814)
Cash dividends paid	(70)	(64)
NET CASH PROVIDED BY (USED IN) FINANCING ACTIVITIES	5,066,819	1,771,845
NET INCREASE (DECREASE) IN CASH AND CASH EQUIVALENTS	(242,717)	(98,762)
CASH AND CASH EQUIVALENTS AT BEGINNING OF PERIOD	268,050	207,254
CASH AND CASH EQUIVALENTS AT END OF PERIOD	25,333	108,492
Supplemental disclosures:
Interest paid	186,887	95,448
Affordable Housing Program payments	2,093	1,927
Net transfers of mortgage loans to other assets	1,658	337
Change in capital expenditures incurred but unpaid	$ 1,229	$ 468

Basis of Presentation

Basis of Presentation	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation	BASIS OF PRESENTATION Basis of Presentation: The accompanying interim financial statements of the Federal Home Loan Bank of Topeka (FHLBank or FHLBank Topeka) are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information and with the instruction provided by Article 10, Rule 10-01 of Regulation S-X. The financial statements contain all adjustments which are, in the opinion of management, necessary for a fair statement of the FHLBank’s 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. The FHLBank’s significant accounting policies and certain other disclosures are set forth in the notes to the audited financial statements for the year ended December 31, 2017 . The interim financial statements presented herein should be read in conjunction with the FHLBank’s audited financial statements and notes thereto, which are included in the FHLBank’s annual report on Form 10-K filed with the Securities and Exchange Commission (SEC) on March 15, 2018 (annual report on Form 10-K). The notes to the interim financial statements highlight significant changes to the notes included in the annual report on Form 10-K. Use of Estimates : The preparation of financial statements under GAAP requires management to make estimates and assumptions as of the date of the financial statements in determining the reported amounts of assets, liabilities and estimated fair values and in determining the disclosure of any contingent assets or liabilities. Estimates and assumptions by management also affect the reported amounts of income and expense during the reporting period. The most significant of these estimates include the fair value of trading and available-for-sale securities, the fair value of derivatives and the allowance for credit losses. Many of the estimates and assumptions, including those used in financial models, are based on financial market conditions as of the date of the financial statements. Because of the volatility of the financial markets, as well as other factors that affect management estimates, actual results may vary from these estimates. Derivatives: All derivatives are recognized on the Statements of Condition at their fair values (including net accrued interest receivable or payable on the derivatives) and are reported as either derivative assets or derivative liabilities, net of cash collateral, including initial and certain variation margin, and accrued interest received or pledged by clearing agents and/or counterparties. The fair values of derivatives are netted by clearing agent or counterparty when the netting requirements have been met. If these netted amounts are positive, they are classified as an asset and, if negative, they are classified as a liability. Cash flows associated with derivatives are reflected as cash flows from operating activities in the Statements of Cash Flows unless the derivative meets the criteria to be a financing derivative. The FHLBank utilizes two Derivative Clearing Organizations (Clearinghouses) for all cleared derivative transactions, LCH Limited and CME Clearing. Effective January 16, 2018, LCH Limited made certain amendments to its rulebook changing the legal characterization of variation margin payments to be daily settlement payments rather than collateral, consistent with the amendment CME Clearing made effective January 3, 2017. At both Clearinghouses, initial margin is considered cash collateral. Reclassifications : Certain immaterial amounts in the financial statements have been reclassified to conform to current period presentations.

Recently Issued Accounting Stan

Recently Issued Accounting Standards And Interpretations And Changes In And Adoptions Of Accounting Principles	3 Months Ended
	Mar. 31, 2018
New Accounting Pronouncements and Changes in Accounting Principles [Abstract]
Recently Issued Accounting Standards And Interpretations And Changes In And Adoptions Of Accounting Principles	RECENTLY ISSUED ACCOUNTING STANDARDS AND INTERPRETATIONS AND CHANGES IN AND ADOPTIONS OF ACCOUNTING PRINCIPLES Targeted Improvements to Accounting for Hedging Activities (Accounting Standards Update (ASU) 2017-12). In August 2017, FASB issued an amendment to simplify the application of hedge accounting guidance in current GAAP and to improve the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements. This guidance requires that, for fair value hedges, the entire change in the fair value of the hedging instrument included in the assessment of hedge effectiveness be presented in the same income statement line that is used to present the earnings effect of the hedged item. For cash flow hedges, the entire change in the fair value of the hedging instrument included in the assessment of hedge effectiveness must be recorded in other comprehensive income (OCI). In addition, the amendments include certain targeted improvements to the assessment of hedge effectiveness and permit, among other things, the following: • Measurement of the change in fair value of the hedged item on the basis of the benchmark rate component of the contractual coupon cash flows determined at hedge inception; • Measurement of the hedged item in a partial-term fair value hedge of interest rate risk by assuming the hedged item has a term that reflects only the designated cash flows being hedged; • Consideration only of how changes in the benchmark interest rate affect a decision to settle a prepayable instrument before its scheduled maturity in calculating the change in the fair value of the hedged item attributable to interest rate risk; and • For a cash flow hedge of interest rate risk of a variable rate financial instrument, an entity could designate the variability in cash flows attributable to the contractually specified interest rate as the hedged risk. The amendment will be effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, which is January 1, 2019 for the FHLBank, and early adoption is permitted in any interim period or fiscal year prior to the effective date. The FHLBank does not plan on early adoption. This guidance should be applied through a cumulative-effect adjustment directly to retained earnings as of the beginning of the fiscal year of adoption. The FHLBank is in the process of evaluating this guidance and its effect on the FHLBank's financial condition, results of operations and cash flows. Premium Amortization on Purchased Callable Debt Securities (ASU 2017-08). In March 2017, FASB issued an amendment to shorten the amortization period of any premium on callable debt securities to the first call date instead of over the contractual life of the instrument. The amendment does not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The guidance is intended to reduce diversity in practice in the amortization of premiums and the consideration of how the potential of a security being called is factored into current impairment assessments. The amendment also intends to more closely align the amortization of premiums and discounts to the expectations incorporated into the market pricing of the instrument. The amendment will be effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, which is January 1, 2019 for the FHLBank, and early adoption is permitted. The FHLBank does not plan on early adoption. This guidance should be applied using a modified retrospective method through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The adoption of this guidance is not expected to have a material effect on the FHLBank's financial condition, results of operations or cash flows. Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). In March 2017, FASB issued an amendment to improve the presentation of net periodic pension cost and net periodic postretirement benefit cost. The amendment requires that the employer disaggregate the service cost component and the other components of net benefit cost and allow only the service cost component of net benefit cost to be eligible for capitalization. The amendment is intended to provide transparency, consistency, and usefulness to users of financial statements. The amendment became effective for annual periods, and interim periods within those annual periods, beginning on January 1, 2018 for the FHLBank. This guidance was applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic postretirement benefit cost in the income statement and prospectively, on and after the effective date, for the capitalization of the service cost component of net periodic pension cost and net periodic postretirement benefit in assets. The adoption of this guidance did not have a material effect on the FHLBank's financial condition, results of operations or cash flows. Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15). In August 2016, FASB issued amendments to clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. This guidance is intended to reduce existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This guidance became effective for the FHLBank for interim and annual periods and applied retrospectively, beginning on January 1, 2018. The adoption of this guidance did not have an impact on the FHLBank's financial condition, results of operations or cash flows. Measurement of Credit Losses on Financial Instruments (ASU 2016-13). In June 2016, FASB issued amended guidance for the accounting of credit losses on financial instruments. The amendments require entities to measure expected credit losses based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. Additionally, under the new guidance, a financial asset, or a group of financial assets, measured at amortized cost basis is required to be presented at the net amount expected to be collected. The guidance also requires: • The statement of income to reflect the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period; • The entities to determine the allowance for credit losses for purchased financial assets with a more-than-insignificant amount of credit deterioration since origination that are measured at amortized cost basis in a similar manner to other financial assets measured at amortized cost basis. The initial allowance for credit losses is required to be added to the purchase price; • Credit losses relating to available-for-sale debt securities to be recorded through an allowance for credit losses. The amendments limit the allowance for credit losses to the amount by which fair value is below amortized cost; and • Public entities to further disaggregate the current disclosure of credit quality indicators in relation to the amortized cost of financing receivables by the year of origination (i.e., vintage). The guidance is effective for the FHLBank for interim and annual periods beginning on January 1, 2020. Early application is permitted as of the interim and annual reporting periods beginning after December 15, 2018. The FHLBank does not plan on early adoption. The guidance should be applied using a modified-retrospective approach, through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. In addition, entities are required to use a prospective transition approach for debt securities for which an other-than-temporary impairment (OTTI) charge had been recognized before the effective date. The FHLBank has formed an internal working group that has begun its implementation efforts by identifying key interpretive issues and potential impacts to processes and systems that will eventually determine the magnitude of the impact on the FHLBank's financial condition, results of operations and cash flows. Leases (ASU 2016-02). In February 2016, FASB issued amendments to lease accounting guidance. Under the new guidance, lessees will be required to recognize a lease liability and a right-of-use asset for all leases in the statement of financial condition, which effectively removes a source of off-balance sheet financing for operating leases. A distinction remains between finance leases and operating leases, but the assets and liabilities arising from operating leases are now also required to be recognized in the statement of financial condition. Lessor accounting is largely unchanged. The amendments are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, which is January 1, 2019 for the FHLBank. The FHLBank does not plan on early adoption. The FHLBank has a limited number of lease agreements and has concluded that the impact of the guidance is not expected to have a material effect on the FHLBank's financial condition, results of operations or cash flows. Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01). In January 2016, FASB issued amendments to improve the recognition, measurement, presentation and disclosure of financial instruments through changes to existing GAAP. The provisions impacting the FHLBank include the elimination of the requirement to disclose the method and significant assumptions used to estimate the fair value of financial instruments carried at amortized cost, the requirement to use the notion of exit price when measuring the fair value of financial instruments for disclosure purposes, and the separate presentation of financial assets and financial liabilities by measurement category and form of asset (i.e., securities or loans and receivables) on the statement of financial condition or in the notes to financial statements. The amendments became effective for annual periods, and interim periods within those annual periods, beginning on January 1, 2018 for the FHLBank. This guidance will impact disclosures related to the fair value of financial instruments. However, this guidance did not have an impact on the FHLBank's financial condition, results of operations or cash flows. Revenue Recognition (ASU 2014-09). In May 2014, FASB issued guidance to introduce a new revenue recognition model in which an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This guidance also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. In July 2015, FASB voted to defer the effective date of the new standard by one year. In addition, in March 2016, FASB issued amendments to clarify the implementation guidance on principal versus agent considerations, in particular, relating to how an entity should determine whether the entity is a principal or an agent for each specified good or service promised to the customer and the nature of each specified good or service. The amendments do not change the core principle in the new revenue standard. The standard became effective for fiscal years, including interim periods within those fiscal years, beginning on January 1, 2018 for the FHLBank. Because the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the adoption of this guidance did not have a material impact on its financial condition, results of operations or cash flows.

Investment Securities

Investment Securities	3 Months Ended
	Mar. 31, 2018
Investments, Debt and Equity Securities [Abstract]
Investment Securities	INVESTMENT SECURITIES Trading Securities: Trading securities by major security type as of March 31, 2018 and December 31, 2017 are summarized in Table 3.1 (in thousands): Table 3.1 Fair Value 03/31/2018 12/31/2017 Non-mortgage-backed securities: Certificates of deposit $ 1,299,865 $ 584,984 GSE obligations 1 1,194,194 1,353,083 Non-mortgage-backed securities 2,494,059 1,938,067 Mortgage-backed securities: U.S. obligation MBS 2 554 580 GSE MBS 3 909,052 930,768 Mortgage-backed securities 909,606 931,348 TOTAL $ 3,403,665 $ 2,869,415 1 Represents debentures issued by other FHLBanks, Federal National Mortgage Association (Fannie Mae), Federal Farm Credit Bank (Farm Credit) and Federal Agricultural Mortgage Corporation (Farmer Mac). GSE securities are not guaranteed by the U.S. government. 2 Represents single-family MBS issued by Government National Mortgage Association (Ginnie Mae), which are guaranteed by the U.S. government. 3 Represents single-family and multi-family MBS issued by Fannie Mae and Federal Home Loan Mortgage Corporation (Freddie Mac). Net gains (losses) on trading securities during the three months ended March 31, 2018 and 2017 are shown in Table 3.2 (in thousands): Table 3.2 Three Months Ended 03/31/2018 03/31/2017 Net gains (losses) on trading securities held as of March 31, 2018 $ (26,941 ) $ 7,051 Net gains (losses) on trading securities sold or matured prior to March 31, 2018 (9 ) (2,364 ) NET GAINS (LOSSES) ON TRADING SECURITIES $ (26,950 ) $ 4,687 Available-for-sale Securities: Available-for-sale securities by major security type as of March 31, 2018 are summarized in Table 3.3 (in thousands): Table 3.3 03/31/2018 Amortized Cost Gross Unrecognized Gains Gross Unrecognized Losses Fair Value Mortgage-backed securities: GSE MBS 1 $ 1,503,100 $ 36,503 $ (1,155 ) $ 1,538,448 TOTAL $ 1,503,100 $ 36,503 $ (1,155 ) $ 1,538,448 1 Represents fixed rate multi-family MBS issued by Fannie Mae . Available-for-sale securities by major security type as of December 31, 2017 are summarized in Table 3.4 (in thousands): Table 3.4 12/31/2017 Amortized Gross Gross Fair Value Mortgage-backed securities: GSE MBS 1 $ 1,462,025 $ 31,638 $ (432 ) $ 1,493,231 TOTAL $ 1,462,025 $ 31,638 $ (432 ) $ 1,493,231 1 Represents fixed rate multi-family MBS issued by Fannie Mae . Table 3.5 summarizes the available-for-sale securities with unrealized losses as of March 31, 2018 (in thousands). The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. Table 3.5 03/31/2018 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Mortgage-backed securities: GSE MBS 1 $ 162,469 $ (1,155 ) $ — $ — $ 162,469 $ (1,155 ) TOTAL TEMPORARILY IMPAIRED SECURITIES $ 162,469 $ (1,155 ) $ — $ — $ 162,469 $ (1,155 ) 1 Represents fixed rate multi-family MBS issued by Fannie Mae . Table 3.6 summarizes the available-for-sale securities with unrealized losses as of December 31, 2017 (in thousands). The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. Table 3.6 12/31/2017 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Mortgage-backed securities: GSE MBS 1 $ 84,937 $ (432 ) $ — $ — $ 84,937 $ (432 ) TOTAL TEMPORARILY IMPAIRED SECURITIES $ 84,937 $ (432 ) $ — $ — $ 84,937 $ (432 ) 1 Represents fixed rate multi-family MBS issued by Fannie Mae . All available-for-sale securities are GSE MBS and as such do not have a single maturity date. The expected maturities of these securities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment fees. Held-to-maturity Securities: Held-to-maturity securities by major security type as of March 31, 2018 are summarized in Table 3.7 (in thousands): Table 3.7 03/31/2018 Amortized Cost OTTI Recognized in AOCI Carrying Value Gross Unrecognized Gains Gross Unrecognized Losses Fair Value Non-mortgage-backed securities: State or local housing agency obligations $ 89,830 $ — $ 89,830 $ 70 $ (4,469 ) $ 85,431 Non-mortgage-backed securities 89,830 — 89,830 70 (4,469 ) 85,431 Mortgage-backed securities: U.S. obligation MBS 1 122,802 — 122,802 448 (109 ) 123,141 GSE MBS 2 4,842,240 — 4,842,240 15,005 (15,570 ) 4,841,675 Private-label residential MBS 75,804 (3,862 ) 71,942 5,317 (1,498 ) 75,761 Mortgage-backed securities 5,040,846 (3,862 ) 5,036,984 20,770 (17,177 ) 5,040,577 TOTAL $ 5,130,676 $ (3,862 ) $ 5,126,814 $ 20,840 $ (21,646 ) $ 5,126,008 1 Represents single-family MBS issued by Ginnie Mae. 2 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac. Held-to-maturity securities by major security type as of December 31, 2017 are summarized in Table 3.8 (in thousands): Table 3.8 12/31/2017 Amortized Cost OTTI Recognized in AOCI Carrying Value Gross Unrecognized Gains Gross Unrecognized Losses Fair Value Non-mortgage-backed securities: State or local housing agency obligations $ 89,830 $ — $ 89,830 $ 74 $ (4,896 ) $ 85,008 Non-mortgage-backed securities 89,830 — 89,830 74 (4,896 ) 85,008 Mortgage-backed securities: U.S obligation MBS 1 127,588 — 127,588 435 (88 ) 127,935 GSE MBS 2 4,561,839 — 4,561,839 15,548 (14,740 ) 4,562,647 Private-label residential MBS 81,731 (4,163 ) 77,568 5,456 (1,618 ) 81,406 Mortgage-backed securities 4,771,158 (4,163 ) 4,766,995 21,439 (16,446 ) 4,771,988 TOTAL $ 4,860,988 $ (4,163 ) $ 4,856,825 $ 21,513 $ (21,342 ) $ 4,856,996 1 Represents single-family MBS issued by Ginnie Mae. 2 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac. Table 3.9 summarizes the held-to-maturity securities with unrealized losses as of March 31, 2018 (in thousands). The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. Table 3.9 03/31/2018 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses 1 Non-mortgage-backed securities: State or local housing agency obligations $ — $ — $ 25,531 $ (4,469 ) $ 25,531 $ (4,469 ) Non-mortgage-backed securities — — 25,531 (4,469 ) 25,531 (4,469 ) Mortgage-backed securities: U.S. obligation MBS 2 21,116 (48 ) 14,604 (61 ) 35,720 (109 ) GSE MBS 3 1,330,090 (1,615 ) 1,453,802 (13,955 ) 2,783,892 (15,570 ) Private-label residential MBS 3,377 (9 ) 57,516 (2,011 ) 60,893 (2,020 ) Mortgage-backed securities 1,354,583 (1,672 ) 1,525,922 (16,027 ) 2,880,505 (17,699 ) TOTAL TEMPORARILY IMPAIRED SECURITIES $ 1,354,583 $ (1,672 ) $ 1,551,453 $ (20,496 ) $ 2,906,036 $ (22,168 ) 1 Total unrealized losses in Table 3.9 will not agree to total gross unrecognized losses in Table 3.7 . Total unrealized losses in Table 3.9 include non-credit-related OTTI recognized in accumulated OCI (AOCI) and gross unrecognized gains on previously other-than-temporarily impaired securities. 2 Represents single-family MBS issued by Ginnie Mae. 3 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac. Table 3.10 summarizes the held-to-maturity securities with unrealized losses as of December 31, 2017 (in thousands). The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. Table 3.10 12/31/2017 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses 1 Non-mortgage-backed securities: State or local housing agency obligations $ — $ — $ 25,104 $ (4,896 ) $ 25,104 $ (4,896 ) Non-mortgage-backed securities — — 25,104 (4,896 ) 25,104 (4,896 ) Mortgage-backed securities: U.S obligation MBS 2 37,944 (88 ) — — 37,944 (88 ) GSE MBS 3 796,378 (1,363 ) 1,478,510 (13,377 ) 2,274,888 (14,740 ) Private-label residential MBS 150 (1 ) 64,477 (2,314 ) 64,627 (2,315 ) Mortgage-backed securities 834,472 (1,452 ) 1,542,987 (15,691 ) 2,377,459 (17,143 ) TOTAL TEMPORARILY IMPAIRED SECURITIES $ 834,472 $ (1,452 ) $ 1,568,091 $ (20,587 ) $ 2,402,563 $ (22,039 ) 1 Total unrealized losses in Table 3.10 will not agree to total gross unrecognized losses in Table 3.8 . Total unrealized losses in Table 3.10 include non-credit-related OTTI recognized in AOCI and gross unrecognized gains on previously other-than-temporarily impaired securities. 2 Represents single-family MBS issued by Ginnie Mae. 3 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac. The amortized cost, carrying value and fair values of held-to-maturity securities by contractual maturity as of March 31, 2018 and December 31, 2017 are shown in Table 3.11 (in thousands). Expected maturities of certain securities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment fees. Table 3.11 03/31/2018 12/31/2017 Amortized Cost Carrying Value Fair Value Amortized Cost Carrying Value Fair Value Non-mortgage-backed securities: Due in one year or less $ — $ — $ — $ — $ — $ — Due after one year through five years — — — — — — Due after five years through 10 years — — — — — — Due after 10 years 89,830 89,830 85,431 89,830 89,830 85,008 Non-mortgage-backed securities 89,830 89,830 85,431 89,830 89,830 85,008 Mortgage-backed securities 5,040,846 5,036,984 5,040,577 4,771,158 4,766,995 4,771,988 TOTAL $ 5,130,676 $ 5,126,814 $ 5,126,008 $ 4,860,988 $ 4,856,825 $ 4,856,996 Net gains (losses) were realized on the sale of long-term held-to-maturity securities during the three months ended March 31, 2018 and are recorded as net gains (losses) on sale of held-to-maturity securities in other income (loss) on the Statements of Income. All securities sold had paid down below 15 percent of the principal outstanding at acquisition. Table 3.12 presents details of the sales (in thousands). No held-to-maturity securities were sold during the three months ended March 31, 2017. Table 3.12 Three Months Ended 03/31/2018 Proceeds from sale of held-to-maturity securities $ 8,406 Carrying value of held-to-maturity securities sold (8,372 ) NET REALIZED GAINS (LOSSES) $ 34 Other-than-temporary Impairment: For the 21 outstanding private-label residential MBS with OTTI during the lives of the securities, the FHLBank’s reported balances as of March 31, 2018 are presented in Table 3.13 (in thousands): Table 3.13 03/31/2018 Unpaid Principal Balance Amortized Cost Carrying Value Fair Value Private-label residential MBS: Prime $ 7,261 $ 6,417 $ 5,909 $ 6,832 Alt-A 22,567 19,952 16,598 20,912 TOTAL $ 29,828 $ 26,369 $ 22,507 $ 27,744 Table 3.14 presents a roll-forward of OTTI activity for the three months ended March 31, 2018 and 2017 related to credit losses recognized in earnings (in thousands): Table 3.14 Three Months Ended 03/31/2018 03/31/2017 Balance, beginning of period $ 7,663 $ 7,502 Additional charge on securities for which OTTI was previously recognized 1 22 37 Amortization of credit component of OTTI 2 (106 ) (69 ) Balance, end of period $ 7,579 $ 7,470 1 For the three months ended March 31, 2018 and 2017, securities previously impaired represent all securities that were impaired prior to January 1, 2018 and 2017, respectively. 2 The FHLBank amortizes the credit component based on estimated cash flows prospectively up to the amount of expected principal to be recovered. The discounted cash flows will move from the discounted loss value to the ultimate principal to be written off at the projected date of loss. If the expected cash flows improve, the amount of expected loss decreases which causes a corresponding decrease in the calculated amortization. Based on the level of improvement in the cash flows, the amortization could become a positive adjustment to income. As of March 31, 2018 , the fair value of a portion of the FHLBank's available-for-sale and held-to-maturity MBS were below the amortized cost of the securities due to interest rate volatility and/or illiquidity. However, the decline in fair value of these securities is considered temporary as the FHLBank expects to recover the entire amortized cost basis on the remaining securities in unrecognized loss positions and neither intends to sell these securities nor is it more likely than not that the FHLBank will be required to sell these securities before its anticipated recovery of the remaining amortized cost basis. For state and local housing agency obligations, the FHLBank determined that all of the gross unrealized losses on these bonds were temporary because the strength of the underlying collateral and credit enhancements was sufficient to protect the FHLBank from losses based on current expectations.

Advances

Advances	3 Months Ended
	Mar. 31, 2018
Advances [Abstract]
Advances	ADVANCES General Terms: The FHLBank offers a wide range of fixed and variable rate advance products with different maturities, interest rates, payment characteristics and optionality. As of March 31, 2018 and December 31, 2017 , the FHLBank had advances outstanding at interest rates ranging from 0.68 percent to 7.41 percent and 0.66 percent to 7.41 percent , respectively. Table 4.1 presents advances summarized by year of contractual maturity as of March 31, 2018 and December 31, 2017 (dollar amounts in thousands): Table 4.1 03/31/2018 12/31/2017 Year of Contractual Maturity Amount Weighted Average Interest Rate Amount Weighted Average Interest Rate Due in one year or less $ 15,050,386 1.78 % $ 14,374,744 1.55 % Due after one year through two years 1,124,757 1.90 1,219,842 1.73 Due after two years through three years 1,442,756 2.10 1,075,287 2.01 Due after three years through four years 915,940 2.12 971,634 2.16 Due after four years through five years 770,790 2.11 918,277 1.96 Thereafter 7,756,903 1.98 7,765,440 1.74 Total par value 27,061,532 1.88 % 26,325,224 1.67 % Discounts (6,807 ) (8,111 ) Hedging adjustments (76,375 ) (21,264 ) TOTAL $ 26,978,350 $ 26,295,849 The FHLBank’s advances outstanding include advances that contain call options that may be exercised with or without prepayment fees at the borrower’s discretion on specific dates (call dates) before the stated advance maturities (callable advances). In exchange for receiving the right to call the advance on a predetermined call schedule, the borrower may pay a higher fixed rate for the advance relative to an equivalent maturity, non-callable, fixed rate advance. The borrower normally exercises its call options on these advances when interest rates decline (fixed rate advances) or spreads change (adjustable rate advances). Convertible advances allow the FHLBank to convert an advance from one interest payment term structure to another. When issuing convertible advances, the FHLBank purchases put options from a member that allow the FHLBank to convert the fixed rate advance to a variable rate advance at the current market rate or another structure after an agreed-upon lockout period. A convertible advance carries a lower interest rate than a comparable-maturity fixed rate advance without the conversion feature. Table 4.2 presents advances summarized by contractual maturity or next call date (for callable advances) and by contractual maturity or next conversion date (for convertible advances) as of March 31, 2018 and December 31, 2017 (in thousands): Table 4.2 Year of Contractual Maturity or Next Call Date Year of Contractual Maturity or Next Conversion Date Redemption Term 03/31/2018 12/31/2017 03/31/2018 12/31/2017 Due in one year or less $ 21,974,310 $ 21,375,728 $ 15,139,886 $ 14,450,744 Due after one year through two years 916,132 881,835 1,208,757 1,342,342 Due after two years through three years 1,210,457 897,151 1,633,406 1,186,087 Due after three years through four years 549,677 790,641 996,440 1,083,984 Due after four years through five years 439,112 522,768 1,026,790 1,174,277 Thereafter 1,971,844 1,857,101 7,056,253 7,087,790 TOTAL PAR VALUE $ 27,061,532 $ 26,325,224 $ 27,061,532 $ 26,325,224 Interest Rate Payment Terms : Table 4.3 details additional interest rate payment terms for advances as of March 31, 2018 and December 31, 2017 (in thousands): Table 4.3 03/31/2018 12/31/2017 Fixed rate: Due in one year or less $ 2,551,071 $ 2,079,061 Due after one year 5,094,394 4,957,303 Total fixed rate 7,645,465 7,036,364 Variable rate: Due in one year or less 12,499,315 12,295,683 Due after one year 6,916,752 6,993,177 Total variable rate 19,416,067 19,288,860 TOTAL PAR VALUE $ 27,061,532 $ 26,325,224

Mortgage Loans

Mortgage Loans	3 Months Ended
	Mar. 31, 2018
Mortgage Loans on Real Estate [Abstract]
Mortgage Loans	MORTGAGE LOANS The MPF Program involves the FHLBank investing in mortgage loans, which have been funded by the FHLBank through or purchased from participating financial institutions (PFIs). These mortgage loans are government-guaranteed or -insured loans (by the Federal Housing Administration, the Department of Veterans Affairs, the Rural Housing Service of the Department of Agriculture and/or the Department of Housing and Urban Development) and conventional residential loans credit-enhanced by PFIs. Depending upon a member’s product selection, the servicing rights can be retained or sold by the participating member. The FHLBank does not buy or own any mortgage servicing rights. Mortgage Loans Held for Portfolio: Table 5.1 presents information as of March 31, 2018 and December 31, 2017 on mortgage loans held for portfolio (in thousands): Table 5.1 03/31/2018 12/31/2017 Real estate: Fixed rate, medium-term 1 , single-family mortgages $ 1,248,857 $ 1,273,893 Fixed rate, long-term, single-family mortgages 6,106,735 5,900,863 Total unpaid principal balance 7,355,592 7,174,756 Premiums 110,192 109,898 Discounts (2,918 ) (2,380 ) Deferred loan costs, net 262 280 Other deferred fees (58 ) (60 ) Hedging adjustments 3,591 5,111 Total before Allowance for Credit Losses on Mortgage Loans 7,466,661 7,287,605 Allowance for Credit Losses on Mortgage Loans (1,057 ) (1,208 ) MORTGAGE LOANS HELD FOR PORTFOLIO, NET $ 7,465,604 $ 7,286,397 1 Medium-term defined as a term of 15 years or less at origination. Table 5.2 presents information as of March 31, 2018 and December 31, 2017 on the outstanding unpaid principal balance (UPB) of mortgage loans held for portfolio (in thousands): Table 5.2 03/31/2018 12/31/2017 Conventional loans $ 6,645,651 $ 6,477,696 Government-guaranteed or -insured loans 709,941 697,060 TOTAL UNPAID PRINCIPAL BALANCE $ 7,355,592 $ 7,174,756 See Note 6 for information related to the FHLBank’s credit risk on mortgage loans and allowance for credit losses.

Allowance For Credit Losses

Allowance For Credit Losses	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Allowance For Credit Losses	ALLOWANCE FOR CREDIT LOSSES The FHLBank has established an allowance methodology for each of its portfolio segments: credit products (advances, letters of credit and other extensions of credit to borrowers); government mortgage loans held for portfolio; conventional mortgage loans held for portfolio; the direct financing lease receivable; term Federal funds sold; and term securities purchased under agreements to resell. Based on management's analyses of each portfolio segment, the FHLBank has only established an allowance for credit losses on its conventional mortgage loans held for portfolio. Roll-forward of Allowance for Credit Losses : Table 6.1 presents a roll-forward of the allowance for credit losses for the three months ended March 31, 2018 and 2017 (in thousands). Table 6.1 Three Months Ended 03/31/2018 03/31/2017 Balance, beginning of the period $ 1,208 $ 1,674 Net (charge-offs) recoveries (181 ) (12 ) (Reversal) provision for credit losses 30 (45 ) Balance, end of the period $ 1,057 $ 1,617 Table 6.2 presents the allowance for credit losses and the recorded investment as well as the method used to evaluate impairment relating to all portfolio segments regardless of whether or not an estimated credit loss has been recorded as of March 31, 2018 (in thousands). The recorded investment in a financing receivable is the UPB, adjusted for accrued interest, net deferred loan fees or costs, unamortized premiums or discounts, fair value hedging adjustments and direct write-downs. The recorded investment is not net of any valuation allowance. Table 6.2 03/31/2018 Conventional Loans Government Loans Credit Products 1 Direct Financing Lease Receivable Total Allowance for credit losses: Individually evaluated for impairment $ 30 $ — $ — $ — $ 30 Collectively evaluated for impairment 1,027 — — — 1,027 TOTAL ALLOWANCE FOR CREDIT LOSSES $ 1,057 $ — $ — $ — $ 1,057 Recorded investment: Individually evaluated for impairment $ 11,044 $ — $ 27,019,326 $ 14,184 $ 27,044,554 Collectively evaluated for impairment 6,768,397 723,476 — — 7,491,873 TOTAL RECORDED INVESTMENT $ 6,779,441 $ 723,476 $ 27,019,326 $ 14,184 $ 34,536,427 1 The recorded investment for credit products includes only advances. The recorded investment for all other credit products is insignificant. Table 6.3 presents the allowance for credit losses and the recorded investment as well as the method used to evaluate impairment relating to all portfolio segments regardless of whether or not an estimated credit loss has been recorded as of March 31, 2017 (in thousands): Table 6.3 03/31/2017 Conventional Government Credit 1 Direct Total Allowance for credit losses: Individually evaluated for impairment $ — $ — $ — $ — $ — Collectively evaluated for impairment 1,617 — — — 1,617 TOTAL ALLOWANCE FOR CREDIT LOSSES $ 1,617 $ — $ — $ — $ 1,617 Recorded investment: Individually evaluated for impairment $ 11,883 $ — $ 25,848,675 $ 16,763 $ 25,877,321 Collectively evaluated for impairment 6,056,998 665,794 — — 6,722,792 TOTAL RECORDED INVESTMENT $ 6,068,881 $ 665,794 $ 25,848,675 $ 16,763 $ 32,600,113 1 The recorded investment for credit products includes only advances. The recorded investment for all other credit products is insignificant. Credit Quality Indicators: The FHLBank’s key credit quality indicators include the migration of: (1) past due loans; (2) non-accrual loans; (3) loans in process of foreclosure; and (4) impaired loans, all of which are used either on an individual or pool basis to determine the allowance for credit losses. Table 6.4 summarizes the delinquency aging and key credit quality indicators for all of the FHLBank’s portfolio segments as of March 31, 2018 (dollar amounts in thousands): Table 6.4 03/31/2018 Conventional Loans Government Loans Credit Products 1 Direct Financing Lease Receivable Total Recorded investment: Past due 30-59 days delinquent $ 41,200 $ 17,393 $ — $ — $ 58,593 Past due 60-89 days delinquent 7,286 5,000 — — 12,286 Past due 90 days or more delinquent 10,643 5,551 — — 16,194 Total past due 59,129 27,944 — — 87,073 Total current loans 6,720,312 695,532 27,019,326 14,184 34,449,354 Total recorded investment $ 6,779,441 $ 723,476 $ 27,019,326 $ 14,184 $ 34,536,427 Other delinquency statistics: In process of foreclosure, included above 2 $ 5,018 $ 2,409 $ — $ — $ 7,427 Serious delinquency rate 3 0.2 % 0.8 % — % — % — % Past due 90 days or more and still accruing interest $ — $ 5,551 $ — $ — $ 5,551 Loans on non-accrual status 4 $ 14,649 $ — $ — $ — $ 14,649 1 The recorded investment for credit products includes only advances. The recorded investment for all other credit products is insignificant. 2 Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans dependent on their delinquency status. 3 Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment for the portfolio class. 4 Loans on non-accrual status include $1,336,000 of troubled debt restructurings. Troubled debt restructurings are restructurings in which the FHLBank, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. Table 6.5 summarizes the key credit quality indicators for all of the FHLBank’s portfolio segments as of December 31, 2017 (dollar amounts in thousands): Table 6.5 12/31/2017 Conventional Loans Government Loans Credit Products 1 Direct Financing Lease Receivable Total Recorded investment: Past due 30-59 days delinquent $ 37,606 $ 17,775 $ — $ — $ 55,381 Past due 60-89 days delinquent 7,898 4,501 — — 12,399 Past due 90 days or more delinquent 12,794 6,273 — — 19,067 Total past due 58,298 28,549 — — 86,847 Total current loans 6,552,971 682,833 26,330,455 14,833 33,581,092 Total recorded investment $ 6,611,269 $ 711,382 $ 26,330,455 $ 14,833 $ 33,667,939 Other delinquency statistics: In process of foreclosure, included above 2 $ 4,167 $ 1,595 $ — $ — $ 5,762 Serious delinquency rate 3 0.2 % 0.9 % — % — % 0.1 % Past due 90 days or more and still accruing interest $ — $ 6,273 $ — $ — $ 6,273 Loans on non-accrual status 4 $ 16,570 $ — $ — $ — $ 16,570 1 The recorded investment for credit products includes only advances. The recorded investment for all other credit products is insignificant. 2 Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans dependent on their delinquency status. 3 Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment for the portfolio class. 4 Loans on non-accrual status include $1,398,000 of troubled debt restructurings. Troubled debt restructurings are restructurings in which the FHLBank, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. Individually Evaluated Impaired Loans: Table 6.6 presents the recorded investment, UPB, and related allowance of impaired conventional mortgage loans individually assessed for impairment as of March 31, 2018 and December 31, 2017 (in thousands): Table 6.6 03/31/2018 12/31/2017 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance $ 10,911 $ 10,851 $ — $ 10,925 $ 10,875 $ — With an allowance 133 134 30 134 136 39 TOTAL $ 11,044 $ 10,985 $ 30 $ 11,059 $ 11,011 $ 39 Table 6.7 presents the average recorded investment and related interest income recognized on these individually evaluated impaired loans during the three months ended March 31, 2018 and 2017 (in thousands): Table 6.7 Three Months Ended 03/31/2018 03/31/2017 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance $ 10,700 $ 56 $ 11,652 $ 74 With an allowance 133 — — — TOTAL $ 10,833 $ 56 $ 11,652 $ 74 The FHLBank had $2,733,000 and $2,539,000 classified as real estate owned (REO) recorded in other assets as of March 31, 2018 and December 31, 2017 , respectively.

Derivatives And Hedging Activit

Derivatives And Hedging Activities	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Derivatives And Hedging Activities	DERIVATIVES AND HEDGING ACTIVITIES Table 7.1 presents outstanding notional amounts and fair values of the derivatives outstanding by type of derivative and by hedge designation as of March 31, 2018 and December 31, 2017 (in thousands). Total derivative assets and liabilities include the effect of netting adjustments and cash collateral. Table 7.1 03/31/2018 12/31/2017 Notional Amount Derivative Assets Derivative Liabilities Notional Amount Derivative Assets Derivative Liabilities Derivatives designated as hedging instruments: Interest rate swaps $ 7,775,702 $ 93,981 $ 21,190 $ 7,219,084 $ 56,159 $ 19,971 Total derivatives designated as hedging relationships 7,775,702 93,981 21,190 7,219,084 56,159 19,971 Derivatives not designated as hedging instruments: Interest rate swaps 3,628,730 20,978 21,390 3,529,299 3,243 21,672 Interest rate caps/floors 2,304,200 1,527 — 2,344,200 1,011 — Mortgage delivery commitments 133,764 283 26 77,585 73 43 Total derivatives not designated as hedging instruments 6,066,694 22,788 21,416 5,951,084 4,327 21,715 TOTAL $ 13,842,396 116,769 42,606 $ 13,170,168 60,486 41,686 Netting adjustments and cash collateral 1 (75,824 ) (41,347 ) (23,456 ) (39,269 ) DERIVATIVE ASSETS AND LIABILITIES $ 40,945 $ 1,259 $ 37,030 $ 2,417 1 Amounts represent the application of the netting requirements that allow the FHLBank to settle positive and negative positions cash collateral, including initial or certain variation margin, and related accrued interest held or placed with the same clearing agent and/or derivative counterparty. Cash collateral posted was $62,492,000 and $56,508,000 as of March 31, 2018 and December 31, 2017 , respectively. Cash collateral received was $96,969,000 and $40,695,000 as of March 31, 2018 and December 31, 2017 , respectively. The following tables provide information regarding gains and losses on derivatives and hedging activities by type of hedge and type of derivative and gains and losses by hedged item for fair value hedges. For the three months ended March 31, 2018 and 2017 , the FHLBank recorded net gains (losses) on derivatives and hedging activities as presented in Table 7.2 (in thousands): Table 7.2 Three Months Ended 03/31/2018 03/31/2017 Derivatives designated as hedging instruments: Interest rate swaps $ (1,974 ) $ (1,330 ) Total net gains (losses) related to fair value hedge ineffectiveness (1,974 ) (1,330 ) Derivatives not designated as hedging instruments: Economic hedges: Interest rate swaps 21,258 8,248 Interest rate caps/floors 515 (1,608 ) Net interest settlements (1,690 ) (5,183 ) Mortgage delivery commitments (1,283 ) 490 Total net gains (losses) related to derivatives not designated as hedging instruments 18,800 1,947 Other 1 (183 ) (14 ) NET GAINS (LOSSES) ON DERIVATIVES AND HEDGING ACTIVITIES $ 16,643 $ 603 1 Amount represents price alignment amount on derivatives for which variation margin is characterized as a daily settled contract. The FHLBank carries derivative instruments at fair value on its Statements of Condition. Any change in the fair value of derivatives designated under a fair value hedging relationship is recorded each period in current period earnings. Fair value hedge accounting allows for the offsetting fair value of the hedged risk in the hedged item to also be recorded in current period earnings. For the three months ended March 31, 2018 and 2017 , the FHLBank recorded net gains (losses) on derivatives and the related hedged items in fair value hedging relationships and the impact of those derivatives on the FHLBank’s net interest income as presented in Table 7.3 (in thousands): Table 7.3 Three Months Ended 03/31/2018 03/31/2017 Gains (Losses) on Derivatives Gains (Losses) on Hedged Items Net Fair Value Hedge Ineffectiveness Effect of Derivatives on Net Interest Income 1 Gains (Losses) on Derivatives Gains (Losses) on Hedged Items Net Fair Value Hedge Ineffectiveness Effect of Derivatives on Net Interest Income 1 Advances $ 51,154 $ (53,954 ) $ (2,800 ) $ (3,621 ) $ 18,116 $ (18,228 ) $ (112 ) $ (16,491 ) Investments 35,406 (35,028 ) 378 (1,080 ) 3,266 (3,813 ) (547 ) (2,715 ) Consolidated obligation bonds (17,062 ) 17,510 448 923 (4,220 ) 3,585 (635 ) 5,519 Consolidated obligation discount notes — — — — 16 (52 ) (36 ) (15 ) TOTAL $ 69,498 $ (71,472 ) $ (1,974 ) $ (3,778 ) $ 17,178 $ (18,508 ) $ (1,330 ) $ (13,702 ) 1 The differentials between accruals of interest receivables and payables on derivatives designated as fair value hedges as well as the amortization/accretion of hedging activities are recognized as adjustments to the interest income or expense of the designated underlying hedged item. Based on credit analyses and collateral requirements, FHLBank management does not anticipate any credit losses on its derivative agreements. The maximum credit risk applicable to a single counterparty was $33,116,000 and $19,118,000 as of March 31, 2018 and December 31, 2017 , respectively. The counterparty was the same for both periods . For uncleared derivative transactions, the FHLBank has entered into bilateral security agreements with its non-member counterparties with bilateral-collateral-exchange provisions that require all credit exposures be collateralized, subject to minimum transfer amounts. The FHLBank utilizes two Clearinghouses for all cleared derivative transactions, LCH Limited and CME Clearing. Effective January 16, 2018, LCH Limited made certain amendments to its rulebook changing the legal characterization of variation margin payments to be daily settlement payments rather than collateral, consistent with the amendment CME Clearing made effective January 3, 2017. At both Clearinghouses, initial margin is considered cash collateral. 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. The FHLBank was not required to post additional initial margin by its clearing agents as of March 31, 2018 and December 31, 2017 . The FHLBank’s net exposure on derivative agreements is presented in Note 10 .

Deposits

Deposits	3 Months Ended
	Mar. 31, 2018
Deposits [Abstract]
Deposits	DEPOSITS The FHLBank offers demand, overnight and short-term deposit programs to its members and to other qualifying non-members. Table 8.1 details the types of deposits held by the FHLBank as of March 31, 2018 and December 31, 2017 (in thousands): Table 8.1 03/31/2018 12/31/2017 Interest-bearing: Demand $ 228,107 $ 246,831 Overnight 333,900 161,900 Total interest-bearing 562,007 408,731 Non-interest-bearing: Demand 61,315 53,038 Total non-interest-bearing 61,315 53,038 TOTAL DEPOSITS $ 623,322 $ 461,769

Consolidated Obligations

Consolidated Obligations	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Consolidated Obligations	CONSOLIDATED OBLIGATIONS Consolidated Obligation Bonds: Table 9.1 presents the FHLBank’s participation in consolidated obligation bonds outstanding as of March 31, 2018 and December 31, 2017 (dollar amounts in thousands): Table 9.1 03/31/2018 12/31/2017 Year of Contractual Maturity Amount Weighted Average Interest Rate Amount Weighted Average Interest Rate Due in one year or less $ 9,064,190 1.67 % $ 11,098,440 1.40 % Due after one year through two years 10,168,650 1.73 6,001,000 1.46 Due after two years through three years 2,057,150 1.80 1,240,300 1.60 Due after three years through four years 982,800 1.75 1,249,050 1.66 Due after four years through five years 1,000,900 1.97 865,650 1.97 Thereafter 3,975,600 2.59 4,053,100 2.57 Total par value 27,249,290 1.85 % 24,507,540 1.65 % Premiums 18,764 19,795 Discounts (3,441 ) (2,843 ) Concession fees (9,993 ) (9,753 ) Hedging adjustments (17,781 ) (271 ) TOTAL $ 27,236,839 $ 24,514,468 The FHLBank issues optional principal redemption bonds (callable bonds) that may be redeemed in whole or in part at the discretion of the FHLBank on predetermined call dates in accordance with terms of bond offerings. The FHLBank’s participation in consolidated obligation bonds outstanding as of March 31, 2018 and December 31, 2017 includes callable bonds totaling $7,042,000,000 and $6,452,000,000 , respectively. The FHLBank uses the unswapped callable bonds for financing its callable fixed rate advances (Note 4 ), MBS (Note 3 ) and mortgage loans (Note 5 ). Contemporaneous with a portion of its fixed rate callable bond issuances, the FHLBank also enters into interest rate swap agreements (in which the FHLBank generally pays a variable rate and receives a fixed rate) with call features that mirror the options in the callable bonds (a sold callable swap). The combined sold callable swap and callable debt transaction allows the FHLBank to obtain attractively priced variable rate financing. Table 9.2 summarizes the FHLBank’s participation in consolidated obligation bonds outstanding by year of maturity, or by the next call date for callable bonds as of March 31, 2018 and December 31, 2017 (in thousands): Table 9.2 Year of Maturity or Next Call Date 03/31/2018 12/31/2017 Due in one year or less $ 15,284,190 $ 17,243,440 Due after one year through two years 10,182,650 5,460,000 Due after two years through three years 787,150 830,300 Due after three years through four years 287,800 259,050 Due after four years through five years 260,900 280,650 Thereafter 446,600 434,100 TOTAL PAR VALUE $ 27,249,290 $ 24,507,540 Table 9.3 summarizes interest rate payment terms for consolidated obligation bonds as of March 31, 2018 and December 31, 2017 (in thousands): Table 9.3 03/31/2018 12/31/2017 Simple variable rate $ 14,690,000 $ 12,900,000 Fixed rate 11,549,290 10,597,540 Fixed to variable rate 535,000 535,000 Step 460,000 430,000 Range 15,000 45,000 TOTAL PAR VALUE $ 27,249,290 $ 24,507,540 Consolidated Discount Notes: Table 9.4 summarizes the FHLBank’s participation in consolidated obligation discount notes, all of which are due within one year (dollar amounts in thousands): Table 9.4 Book Value Par Value Weighted Average Interest Rate 1 March 31, 2018 $ 22,606,383 $ 22,638,501 1.59 % December 31, 2017 $ 20,420,651 $ 20,445,225 1.23 % 1 Represents yield to maturity excluding concession fees.

Assets and Liabilities Subject

Assets and Liabilities Subject to Offsetting	3 Months Ended
	Mar. 31, 2018
Offsetting [Abstract]
Assets and Liabilities Subject to Offsetting	ASSETS AND LIABILITIES SUBJECT TO OFFSETTING The FHLBank presents certain financial instruments, including derivatives, repurchase agreements and securities purchased under agreements to resell, on a net basis by clearing agent by Clearinghouse, or by counterparty, when it has met the netting requirements. For these financial instruments, the FHLBank has elected to offset its asset and liability positions, as well as cash collateral, including initial and certain variation margin, received or pledged, and associated accrued interest. The FHLBank has analyzed the enforceability of offsetting rights incorporated in its cleared derivative transactions and determined that the exercise of those offsetting rights by a non-defaulting party under these transactions should be upheld under applicable law upon an event of default including a bankruptcy, insolvency, or similar proceeding involving the Clearinghouse or clearing agent, or both. Based on this analysis, the FHLBank presents a net derivative receivable or payable for all of its transactions through a particular clearing agent with a particular Clearinghouse. Tables 10.1 and 10.2 present the fair value of financial assets, including the related collateral received from or pledged to clearing agents or counterparties, based on the terms of the FHLBank’s master netting arrangements or similar agreements as of March 31, 2018 and December 31, 2017 (in thousands): Table 10.1 03/31/2018 Description Gross Amounts of Recognized Assets Gross Amounts Offset in the Statement of Condition Net Amounts of Assets Presented in the Statement of Condition Gross Amounts Not Offset in the Statement of Condition 1 Net Amount Derivative assets: Uncleared derivatives $ 115,961 $ (109,864 ) $ 6,097 $ (3,110 ) $ 2,987 Cleared derivatives 808 34,040 34,848 — 34,848 Total derivative assets 116,769 (75,824 ) 40,945 (3,110 ) 37,835 Securities purchased under agreements to resell 3,206,045 — 3,206,045 (3,206,045 ) — TOTAL $ 3,322,814 $ (75,824 ) $ 3,246,990 $ (3,209,155 ) $ 37,835 1 Represents noncash collateral received on financial instruments that: (1) do not qualify for netting on the Statement of Condition; or (2) are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments). Table 10.2 12/31/2017 Description Gross Amounts of Recognized Assets Gross Amounts Offset in the Statement of Condition Net Amounts of Assets Presented in the Statement of Condition Gross Amounts Not Offset in the Statement of Condition 1 Net Amount Derivative assets: Uncleared derivatives $ 54,164 $ (52,330 ) $ 1,834 $ (73 ) $ 1,761 Cleared derivatives 6,322 28,874 35,196 — 35,196 Total derivative assets 60,486 (23,456 ) 37,030 (73 ) 36,957 Securities purchased under agreements to resell 3,161,446 — 3,161,446 (3,161,446 ) — TOTAL $ 3,221,932 $ (23,456 ) $ 3,198,476 $ (3,161,519 ) $ 36,957 1 Represents noncash collateral received on financial instruments that: (1) do not qualify for netting on the Statement of Condition; or (2) are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments). Tables 10.3 and 10.4 present the fair value of financial liabilities, including the related collateral received from or pledged to counterparties, based on the terms of the FHLBank’s master netting arrangements or similar agreements as of March 31, 2018 and December 31, 2017 (in thousands): Table 10.3 03/31/2018 Description Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statement of Condition Net Amounts of Liabilities Presented in the Statement of Condition Gross Amounts Not Offset in the Statement of Condition 1 Net Amount Derivative liabilities: Uncleared derivatives $ 40,673 $ (39,414 ) $ 1,259 $ (26 ) $ 1,233 Cleared derivatives 1,933 (1,933 ) — — — Total derivative liabilities 42,606 (41,347 ) 1,259 (26 ) 1,233 TOTAL $ 42,606 $ (41,347 ) $ 1,259 $ (26 ) $ 1,233 1 Represents noncash collateral received on financial instruments that: (1) do not qualify for netting on the Statement of Condition; or (2) are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments). Table 10.4 12/31/2017 Description Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statement of Condition Net Amounts of Liabilities Presented in the Statement of Condition Gross Amounts Not Offset in the Statement of Condition 1 Net Amount Derivative liabilities: Uncleared derivatives $ 31,805 $ (29,388 ) $ 2,417 $ (43 ) $ 2,374 Cleared derivatives 9,881 (9,881 ) — — — Total derivative liabilities 41,686 (39,269 ) 2,417 (43 ) 2,374 TOTAL $ 41,686 $ (39,269 ) $ 2,417 $ (43 ) $ 2,374 1 Represents noncash collateral received on financial instruments that: (1) do not qualify for netting on the Statement of Condition; or (2) are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments).

Capital

Capital	3 Months Ended
	Mar. 31, 2018
Stockholders' Equity Note [Abstract]
Capital	CAPITAL Capital Requirements: The FHLBank is subject to three capital requirements under the provisions of the Gramm-Leach-Bliley Act (GLB Act) and the Federal Housing Finance Agency's (FHFA) capital structure regulation. Regulatory capital does not include AOCI but does include mandatorily redeemable capital stock. • Risk-based capital. The FHLBank must maintain at all times permanent capital in an amount at least equal to the sum of its credit risk, market risk and operations risk capital requirements. The risk-based capital requirements are all calculated in accordance with the rules and regulations of the FHFA. Only permanent capital, defined as Class B Common Stock and retained earnings, can be used by the FHLBank to satisfy its risk-based capital requirement. The FHFA may require the FHLBank to maintain a greater amount of permanent capital than is required by the risk-based capital requirement as defined, but the FHFA has not placed any such requirement on the FHLBank to date. • Total regulatory capital. The GLB Act requires the FHLBank to maintain at all times at least a 4.0 percent total capital-to-asset ratio. Total regulatory capital is defined as the sum of permanent capital, Class A Common Stock, any general loss allowance, if consistent with GAAP and not established for specific assets, and other amounts from sources determined by the FHFA as available to absorb losses. • Leverage capital. The FHLBank is required to maintain at all times a leverage capital-to-assets ratio of at least 5.0 percent , with the leverage capital ratio defined as the sum of permanent capital weighted 1.5 times and non-permanent capital (currently only Class A Common Stock) weighted 1.0 times, divided by total assets. Table 11.1 illustrates that the FHLBank was in compliance with its regulatory capital requirements as of March 31, 2018 and December 31, 2017 (dollar amounts in thousands): Table 11.1 03/31/2018 12/31/2017 Required Actual Required Actual Regulatory capital requirements: Risk-based capital $ 487,274 $ 2,289,753 $ 380,750 $ 2,248,599 Total regulatory capital-to-asset ratio 4.0 % 4.6 % 4.0 % 5.2 % Total regulatory capital $ 2,125,994 $ 2,458,006 $ 1,923,064 $ 2,485,757 Leverage capital ratio 5.0 % 6.8 % 5.0 % 7.5 % Leverage capital $ 2,657,492 $ 3,602,883 $ 2,403,830 $ 3,610,056 Mandatorily Redeemable Capital Stock: The FHLBank is a cooperative whose members own most of the FHLBank’s capital stock. Former members (including certain non-members that own FHLBank capital stock as a result of merger or acquisition, relocation, charter termination, or involuntary termination of an FHLBank member) own the remaining capital stock to support business transactions still carried on an FHLBank's statement of condition. Shares cannot be purchased or sold except between the FHLBank and its members at a price equal to the $100 per share par value. If a member cancels its written notice of redemption or notice of withdrawal, the FHLBank will reclassify mandatorily redeemable capital stock from a liability to equity. After the reclassification, dividends on the capital stock would no longer be classified as interest expense. Table 11.2 presents a roll-forward of mandatorily redeemable capital stock for the three months ended March 31, 2018 and 2017 (in thousands): Table 11.2 Three Months Ended 03/31/2018 03/31/2017 Balance, beginning of period $ 5,312 $ 2,670 Capital stock subject to mandatory redemption reclassified from equity during the period 100,390 173,395 Redemption or repurchase of mandatorily redeemable capital stock during the period (100,734 ) (173,814 ) Stock dividend classified as mandatorily redeemable capital stock during the period 61 13 Balance, end of period $ 5,029 $ 2,264 Table 11.3 shows the amount of mandatorily redeemable capital stock by contractual year of redemption as of March 31, 2018 and December 31, 2017 (in thousands). The year of redemption in Table 11.3 is the end of the redemption period in accordance with the FHLBank’s capital plan. The FHLBank is not required to redeem or repurchase membership stock until six months (for Class A Common Stock) or five years (for Class B Common Stock) after the FHLBank receives notice for withdrawal. Additionally, the FHLBank is not required to redeem or repurchase activity-based stock until any activity-based stock becomes excess stock as a result of an activity no longer remaining outstanding. However, the FHLBank intends to repurchase the excess activity-based stock of non-members to the extent that it can do so and still meet its regulatory capital requirements. Table 11.3 Contractual Year of Repurchase 03/31/2018 12/31/2017 Year 1 $ 1 $ 1 Year 2 — — Year 3 — — Year 4 20 245 Year 5 3,039 3,039 Past contractual redemption date due to remaining activity 1 1,969 2,027 TOTAL $ 5,029 $ 5,312 1 Represents mandatorily redeemable capital stock that is past the end of the contractual redemption period because there is activity outstanding to which the mandatorily redeemable capital stock relates. Excess Capital Stock: Excess capital stock is defined as the amount of stock held by a member (or former member) in excess of that institution’s minimum stock purchase requirement. FHFA rules limit the ability of the FHLBank to create excess member stock under certain circumstances. For example, the FHLBank may not pay dividends in the form of capital stock or issue new excess stock to members if the FHLBank’s excess stock exceeds one percent of its total assets or if the issuance of excess stock would cause the FHLBank’s excess stock to exceed one percent of its total assets. As of March 31, 2018 , the FHLBank’s excess stock was less than one percent of total assets. Capital Classification Determination: The FHFA determines each FHLBank’s capital classification on at least a quarterly basis. If an FHLBank is determined to be other than adequately capitalized, the FHLBank becomes subject to additional supervisory authority by the FHFA. Before implementing a reclassification, the Director of the FHFA is required to provide the FHLBank with written notice of the proposed action and an opportunity to submit a response. As of the most recent review by the FHFA for the fourth quarter of 2017 , the FHLBank was classified as adequately capitalized .

Accumulated Other Comprehensive

Accumulated Other Comprehensive Income	3 Months Ended
	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income	ACCUMULATED OTHER COMPREHENSIVE INCOME Table 12.1 summarizes the changes in AOCI for the three months ended March 31, 2018 and 2017 (in thousands): Table 12.1 Three Months Ended Net Unrealized Gains (Losses) on Available-for-Sale Securities Net Non-credit Portion of OTTI Gains (Losses) on Held-to-maturity Securities Defined Benefit Pension Plan Total AOCI Balance at December 31, 2016 $ 9,345 $ (5,841 ) $ (2,927 ) $ 577 Other comprehensive income (loss) before reclassification: Unrealized gains (losses) 8,485 8,485 Non-credit OTTI losses (4 ) (4 ) Accretion of non-credit loss 376 376 Reclassifications from other comprehensive income (loss) to net income: Non-credit OTTI to credit OTTI 1 37 37 Amortization of net losses - defined benefit pension plan 2 57 57 Net current period other comprehensive income (loss) 8,485 409 57 8,951 Balance at March 31, 2017 $ 17,830 $ (5,432 ) $ (2,870 ) $ 9,528 Balance at December 31, 2017 $ 31,206 $ (4,163 ) $ (1,385 ) $ 25,658 Other comprehensive income (loss) before reclassification: Unrealized gains (losses) 4,142 4,142 Accretion of non-credit loss 279 279 Reclassifications from other comprehensive income (loss) to net income: Non-credit OTTI to credit OTTI 1 22 22 Amortization of net losses - defined benefit pension plan 2 7 7 Net current period other comprehensive income (loss) 4,142 301 7 4,450 Balance at March 31, 2018 $ 35,348 $ (3,862 ) $ (1,378 ) $ 30,108 1 Recorded in “Net other-than-temporary impairment losses on held-to-maturity securities” on the Statements of Income. Amount represents a debit (decrease to other income (loss)). 2 Recorded in “Other” non-interest expense on the Statements of Income. Amount represents a debit (increase to other expenses).

Fair Values

Fair Values	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Values	FAIR VALUES The fair value amounts recorded on the Statements of Condition and presented in the note disclosures have been determined by the FHLBank using available market and other pertinent information and reflect the FHLBank’s best judgment of appropriate valuation methods. Although the FHLBank uses its best judgment in estimating the fair value of its financial instruments, there are inherent limitations in any valuation technique. Therefore, the fair values may not be indicative of the amounts that would have been realized in market transactions as of March 31, 2018 and December 31, 2017 . Subjectivity of Estimates: Estimates of the fair value of advances with options, mortgage instruments, derivatives with embedded options and consolidated obligation bonds with options are highly subjective and require judgments regarding significant matters such as the amount and timing of future cash flows, prepayment speed assumptions, expected interest rate volatility, methods to determine possible distributions of future interest rates used to value options, and the selection of discount rates that appropriately reflect market and credit risks. The use of different assumptions could have a material effect on the fair value estimates. Fair Value Hierarchy: The FHLBank records trading securities, available-for-sale securities, derivative assets and derivative liabilities at fair value on a recurring basis and on occasion, certain private-label MBS, impaired mortgage loans held for portfolio and non-financial assets on a non-recurring basis. The fair value hierarchy requires the FHLBank to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The inputs are evaluated and an overall level for the fair value measurement is determined. This overall level is an indication of the market observability of the fair value measurement for the asset or liability. The FHLBank must disclose the level within the fair value hierarchy in which the measurements are classified for all assets and liabilities. The fair value hierarchy prioritizes the inputs used to measure fair value into three broad levels: • Level 1 Inputs – Quoted prices (unadjusted) for identical assets or liabilities in active markets that the FHLBank can access on the measurement date. • Level 2 Inputs – Inputs other than quoted prices within Level 1 that are observable inputs for the asset or liability, either directly or indirectly. If the asset or liability has a specified (contractual) term, a Level 2 input must be observable for substantially the full term of the asset or liability. Level 2 inputs include the following: (1) quoted prices for similar assets and liabilities in active markets; (2) quoted prices for similar assets and liabilities in markets that are not active; (3) inputs other than quoted prices that are observable for the asset or liability (e.g., interest rates and yield curves that are observable at commonly quoted intervals and implied volatilities); and (4) inputs that are derived principally from or corroborated by observable market data by correlation or other means. • Level 3 Inputs – Unobservable inputs for the asset or liability. The FHLBank reviews its fair value hierarchy classifications on a quarterly basis. Changes in the observability of the valuation inputs may result in a reclassification of certain assets or liabilities. There were no reclassifications of assets or liabilities recorded at fair value on a recurring basis during the three months ended March 31, 2018 and 2017 . The carrying value and fair value of the FHLBank’s financial assets and liabilities as of March 31, 2018 and December 31, 2017 are summarized in Tables 13.1 and 13.2 (in thousands): Table 13.1 03/31/2018 Carrying Value Total Fair Value Level 1 Level 2 Level 3 Netting Adjustment and Cash Collateral 1 Assets: Cash and due from banks $ 25,333 $ 25,333 $ 25,333 $ — $ — $ — Interest-bearing deposits 880,799 880,799 — 880,799 — — Securities purchased under agreements to resell 3,206,045 3,206,045 — 3,206,045 — — Federal funds sold 4,282,000 4,282,000 — 4,282,000 — — Trading securities 3,403,665 3,403,665 — 3,403,665 — — Available-for-sale securities 1,538,448 1,538,448 — 1,538,448 — — Held-to-maturity securities 5,126,814 5,126,008 — 4,964,816 161,192 — Advances 26,978,350 26,980,265 — 26,980,265 — — Mortgage loans held for portfolio, net of allowance 7,465,604 7,441,731 — 7,439,485 2,246 — Accrued interest receivable 96,742 96,742 — 96,742 — — Derivative assets 40,945 40,945 — 116,769 — (75,824 ) Liabilities: Deposits 623,322 623,322 — 623,322 — — Consolidated obligation discount notes 22,606,383 22,605,003 — 22,605,003 — — Consolidated obligation bonds 27,236,839 26,969,191 — 26,969,191 — — Mandatorily redeemable capital stock 5,029 5,029 5,029 — — — Accrued interest payable 74,485 74,485 — 74,485 — — Derivative liabilities 1,259 1,259 — 42,606 — (41,347 ) Other Asset (Liability): Industrial revenue bonds 29,000 26,585 — 26,585 — — Financing obligation payable (29,000 ) (26,585 ) — (26,585 ) — — Standby letters of credit (1,276 ) (1,276 ) — (1,276 ) — — Standby bond purchase agreements 93 2,583 — 2,583 — — Advance commitments — (8,433 ) — (8,433 ) — — 1 Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty . Table 13.2 12/31/2017 Carrying Value Total Fair Value Level 1 Level 2 Level 3 Netting Adjustment and Cash Collateral 1 Assets: Cash and due from banks $ 268,050 $ 268,050 $ 268,050 $ — $ — $ — Interest-bearing deposits 442,682 442,682 — 442,682 — — Securities purchased under agreements to resell 3,161,446 3,161,446 — 3,161,446 — — Federal funds sold 1,175,000 1,175,000 — 1,175,000 — — Trading securities 2,869,415 2,869,415 — 2,869,415 — — Available-for-sale securities 1,493,231 1,493,231 — 1,493,231 — — Held-to-maturity securities 4,856,825 4,856,996 — 4,690,582 166,414 — Advances 26,295,849 26,306,432 — 26,306,432 — — Mortgage loans held for portfolio, net of allowance 7,286,397 7,400,508 — 7,398,878 1,630 — Accrued interest receivable 85,547 85,547 — 85,547 — — Derivative assets 37,030 37,030 — 60,486 — (23,456 ) Liabilities: Deposits 461,769 461,769 — 461,769 — — Consolidated obligation discount notes 20,420,651 20,419,168 — 20,419,168 — — Consolidated obligation bonds 24,514,468 24,374,595 — 24,374,595 — — Mandatorily redeemable capital stock 5,312 5,312 5,312 — — — Accrued interest payable 56,116 56,116 — 56,116 — — Derivative liabilities 2,417 2,417 — 41,686 — (39,269 ) Other Asset (Liability): Industrial revenue bonds 29,000 27,137 — 27,137 — — Financing obligation payable (29,000 ) (27,137 ) — (27,137 ) — — Standby letters of credit (1,246 ) (1,246 ) — (1,246 ) — — Standby bond purchase agreements 385 2,812 — 2,812 — — Advance commitments — (8,069 ) — (8,069 ) — — 1 Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty. Fair Value Measurements: Tables 13.3 and 13.4 present, for each hierarchy level, the FHLBank’s assets and liabilities that are measured at fair value on a recurring or nonrecurring basis on the Statements of Condition as of or for the periods ended March 31, 2018 and December 31, 2017 (in thousands). The FHLBank measures certain held-to-maturity securities at fair value on a nonrecurring basis due to the recognition of a credit loss. For held-to-maturity securities that had credit impairment recorded during a period for which no total impairment was recorded (the full amount of additional credit impairment was a reclassification from non-credit impairment previously recorded in AOCI), these securities were recorded at their carrying values and not fair value. The FHLBank measures certain impaired mortgage loans held for portfolio at fair value on a nonrecurring basis when, upon individual evaluation for impairment, the estimated fair value less costs to sell is lower than the recorded investment. REO is initially recorded at fair value less estimated selling costs and is subsequently carried at the lower of that amount or current fair value. Table 13.3 03/31/2018 Total Level 1 Level 2 Level 3 Netting Adjustment and Cash Collateral 1 Recurring fair value measurements - Assets: Trading securities: Certificates of deposit $ 1,299,865 $ — $ 1,299,865 $ — $ — GSE obligations 2 1,194,194 — 1,194,194 — — U.S. obligation MBS 3 554 — 554 — — GSE MBS 4 909,052 — 909,052 — — Total trading securities 3,403,665 — 3,403,665 — — Available-for-sale securities: GSE MBS 5 1,538,448 — 1,538,448 — — Total available-for-sale securities 1,538,448 — 1,538,448 — — Derivative assets: Interest-rate related 40,662 — 116,486 — (75,824 ) Mortgage delivery commitments 283 — 283 — — Total derivative assets 40,945 — 116,769 — (75,824 ) TOTAL RECURRING FAIR VALUE MEASUREMENTS - ASSETS $ 4,983,058 $ — $ 5,058,882 $ — $ (75,824 ) Recurring fair value measurements - Liabilities: Derivative liabilities: Interest-rate related $ 1,233 $ — $ 42,580 $ — $ (41,347 ) Mortgage delivery commitments 26 — 26 — — Total derivative liabilities 1,259 — 42,606 — (41,347 ) TOTAL RECURRING FAIR VALUE MEASUREMENTS - LIABILITIES $ 1,259 $ — $ 42,606 $ — $ (41,347 ) Nonrecurring fair value measurements - Assets 6 : Held-to-maturity securities: Impaired mortgage loans $ 2,236 $ — $ — $ 2,236 $ — Real estate owned 1,268 — — 1,268 — TOTAL NONRECURRING FAIR VALUE MEASUREMENTS - ASSETS $ 3,504 $ — $ — $ 3,504 $ — 1 Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral, related accrued interest held or placed with the same clearing agent or derivative counterparty. 2 Represents debentures issued by other FHLBanks, Fannie Mae, Farm Credit and Farmer Mac. 3 Represents single-family MBS issued by Ginnie Mae. 4 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac. 5 Represents multi-family MBS issued by Fannie Mae. 6 Includes assets adjusted to fair value during the three months ended March 31, 2018 and still outstanding as of March 31, 2018 . Table 13.4 12/31/2017 Total Level 1 Level 2 Level 3 Netting Adjustment and Cash Collateral 1 Recurring fair value measurements - Assets: Trading securities: Certificates of deposit $ 584,984 $ — $ 584,984 $ — $ — GSE obligations 2 1,353,083 — 1,353,083 — — U.S. obligation MBS 3 580 — 580 — — GSE MBS 4 930,768 — 930,768 — — Total trading securities 2,869,415 — 2,869,415 — — Available-for-sale securities: GSE MBS 5 1,493,231 — 1,493,231 — — Total available-for-sale securities 1,493,231 — 1,493,231 — — Derivative assets: Interest-rate related 36,957 — 60,413 — (23,456 ) Mortgage delivery commitments 73 — 73 — — Total derivative assets 37,030 — 60,486 — (23,456 ) TOTAL RECURRING FAIR VALUE MEASUREMENTS - ASSETS $ 4,399,676 $ — $ 4,423,132 $ — $ (23,456 ) Recurring fair value measurements - Liabilities: Derivative liabilities: Interest-rate related $ 2,374 $ — $ 41,643 $ — $ (39,269 ) Mortgage delivery commitments 43 — 43 — — Total derivative liabilities 2,417 — 41,686 — (39,269 ) TOTAL RECURRING FAIR VALUE MEASUREMENTS - LIABILITIES $ 2,417 $ — $ 41,686 $ — $ (39,269 ) Nonrecurring fair value measurements - Assets 6 : Held-to-maturity securities: Private-label residential MBS $ 4,097 $ — $ — $ 4,097 $ — Impaired mortgage loans 1,633 — — 1,633 — Real estate owned 1,031 — — 1,031 — TOTAL NONRECURRING FAIR VALUE MEASUREMENTS - ASSETS $ 6,761 $ — $ — $ 6,761 $ — 1 Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty. 2 Represents debentures issued by other FHLBanks, Fannie Mae, Farm Credit and Farmer Mac. 3 Represents single-family MBS issued by Ginnie Mae. 4 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac. 5 Represents multi-family MBS issued by Fannie Mae. 6 Includes assets adjusted to fair value during the year ended December 31, 2017 and still outstanding as of December 31, 2017 .

Commitments And Contingencies

Commitments And Contingencies	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Commitments And Contingencies	COMMITMENTS AND CONTINGENCIES Joint and Several Liability: As provided in the Federal Home Loan Bank Act of 1932, as amended (Bank Act) or in FHFA regulations, consolidated obligations are backed only by the financial resources of the FHLBanks. FHLBank Topeka is jointly and severally liable with the other FHLBanks for the payment of principal and interest on all of the consolidated obligations issued by the FHLBanks. The par amounts for which FHLBank Topeka is jointly and severally liable were approximately $969,341,696,000 and $989,306,996,000 as of March 31, 2018 and December 31, 2017 , respectively. The joint and several obligations are mandated by FHFA regulations and are not the result of arms-length transactions among the FHLBanks. As described above, the FHLBanks have no control over the amount of the guaranty or the determination of how each FHLBank would perform under the joint and several liability. Because the FHLBanks are subject to the authority of the FHFA as it relates to decisions involving the allocation of the joint and several liability for all FHLBanks' consolidated obligations, FHLBank Topeka regularly monitors the financial condition of the other FHLBanks to determine whether it should expect a loss to arise from its joint and several obligations. If the FHLBank were to determine that a loss was probable and the amount of the loss could be reasonably estimated, the FHLBank would charge to income the amount of the expected loss. Based upon the creditworthiness of the other FHLBanks as of March 31, 2018 , FHLBank Topeka has concluded that a loss accrual is not necessary at this time. Off-balance Sheet Commitments: As of March 31, 2018 and December 31, 2017 , off-balance sheet commitments are presented in Table 14.1 (in thousands): Table 14.1 03/31/2018 12/31/2017 Notional Amount Expire Within One Year Expire After One Year Total Expire Within One Year Expire After One Year Total Standby letters of credit outstanding $ 3,844,830 $ 45,377 $ 3,890,207 $ 3,410,258 $ 7,238 $ 3,417,496 Advance commitments outstanding 41,500 99,230 140,730 70,025 99,475 169,500 Commitments for standby bond purchases 442,451 389,114 831,565 354,410 543,967 898,377 Commitments to fund or purchase mortgage loans 133,764 — 133,764 77,585 — 77,585 Commitments to issue consolidated bonds, at par 1,000 — 1,000 5,000 — 5,000 Commitments to issue consolidated discount notes, at par 800,000 — 800,000 — — — Commitments to Extend Credit: The FHLBank issues standby letters of credit on behalf of its members to support certain obligations of the members to third-party beneficiaries. These standby letters of credit are subject to the same collateralization and borrowing limits that are applicable to advances and are fully collateralized with assets allowed by the FHLBank’s Member Products Policy (MPP). Standby letters of credit may be offered to assist members in facilitating residential housing finance, community lending, and asset-liability management, and to provide liquidity. In particular, members often use standby letters of credit as collateral for deposits from federal and state government agencies. Standby letters of credit are executed for members for a fee. If the FHLBank is required to make payment for a beneficiary's draw, the member either reimburses the FHLBank for the amount drawn or, subject to the FHLBank's discretion, the amount drawn may be converted into a collateralized advance to the member. However, standby letters of credit usually expire without being drawn upon. Standby letters of credit have original expiration periods of up to 10 years, currently expiring no later than 2023 . Unearned fees as well as the value of the guarantees related to standby letters of credit are recorded in other liabilities and amounted to $1,276,000 and $1,246,000 as of March 31, 2018 and December 31, 2017 , respectively. Advance commitments legally bind and unconditionally obligate the FHLBank for additional advances up to 24 months in the future. Based upon management’s credit analysis of members and collateral requirements under the MPP, the FHLBank does not expect to incur any credit losses on the outstanding letters of credit or advance commitments. Standby Bond-Purchase Agreements: The FHLBank has entered into standby bond purchase agreements with state housing authorities whereby the FHLBank, for a fee, agrees to purchase and hold the authorities’ bonds until the designated marketing agent can find a suitable investor or the housing authority repurchases the bond according to a schedule established by the standby agreement. Each standby agreement dictates the specific terms that would require the FHLBank to purchase the bond. The bond purchase commitments entered into by the FHLBank expire no later than 2021 , though some are renewable at the option of the FHLBank. As of March 31, 2018 and December 31, 2017 , the total commitments for bond purchases included agreements with two in-district state housing authorities. The FHLBank was not required to purchase any bonds under any agreements during the three months ended March 31, 2018 and 2017 . Commitments to Purchase Mortgage Loans: These commitments that unconditionally obligate the FHLBank to purchase mortgage loans from participating FHLBank Topeka members in the MPF Program are generally for periods not to exceed 60 calendar days. Certain commitments are recorded as derivatives at their fair values on the Statements of Condition. The FHLBank recorded mortgage delivery commitment net derivative asset (liability) balances of $257,000 and $30,000 as of March 31, 2018 and December 31, 2017 , respectively. Commitments to Issue Consolidated Obligations: The FHLBank enters into commitments to issue consolidated obligation bonds and discount notes outstanding in the normal course of its business. All settle within the shortest period possible and are considered regular way trades; thus, the commitments are appropriately not recorded as derivatives. Other Commitments: On June 28, 2017 , the FHLBank completed an industrial revenue bond financing transaction with Shawnee County, Kansas (County) that will provide property tax savings for 10 years on the FHLBank's new headquarters. In the transaction, the County acquired an interest in the land, improvements, building and equipment (collectively, the Project) by issuing up to $36,000,000 of industrial revenue bonds due December 31, 2027 (IRBs) and leased the Project to the FHLBank for an identical 127 -month term under a financing lease. The IRBs are collateralized by the Project and the lease revenues for the related leasing transaction with the County. The IRBs were purchased by the FHLBank. The County assigned the lease to the bond trustee for the FHLBank's benefit as the sole holder of the IRBs. The FHLBank can prepay the IRBs at any time, but would forfeit its property tax benefit in the event the IRBs were to be prepaid. As a result, the land and building will remain a component of the property, plant and equipment in the FHLBank's statement of financial condition. The IRBs and the equivalent liability are included in the FHLBank's statement of financial condition in other assets and other liabilities, respectively. The FHLBank, as holder of the IRBs, is due interest at 2.0 percent per annum with interest payable annual ly in arrears on December 1, beginning December 1, 2018 . This interest income is directly offset by the financing interest expense payments on the land and building, which are due at the same time and in the same amount as the interest income. As of March 31, 2018 and December 31, 2017 , $29,000,000 of the IRBs were issued and outstanding.

Transactions With Stockholders

Transactions With Stockholders	3 Months Ended
	Mar. 31, 2018
Federal Home Loan Banks [Abstract]
Transactions With Stockholders And Housing Associates	TRANSACTIONS WITH STOCKHOLDERS The FHLBank is a cooperative whose members own most of the capital stock of the FHLBank and generally receive dividends on their investments. In addition, certain former members that still have outstanding transactions are also required to maintain their investments in FHLBank capital stock until the transactions mature or are paid off. Nearly all outstanding advances are with current members, and the majority of outstanding mortgage loans held for portfolio were purchased from current or former members. The FHLBank also maintains demand deposit accounts for members primarily to facilitate settlement activities that are directly related to advances and mortgage loan purchases. Transactions with members are entered into in the ordinary course of business. In instances where members also have officers or directors who are directors of the FHLBank, transactions with those members are subject to the same eligibility and credit criteria, as well as the same terms and conditions, as other transactions with members. For financial reporting and disclosure purposes, the FHLBank defines related parties as FHLBank directors’ financial institutions and members with capital stock investments in excess of 10 percent of the FHLBank’s total regulatory capital stock outstanding, which includes mandatorily redeemable capital stock. Activity with Members that Exceed a 10 Percent Ownership in FHLBank Capital Stock: Tables 15.1 and 15.2 present information on members that owned more than 10 percent of outstanding FHLBank regulatory capital stock as of March 31, 2018 and December 31, 2017 (dollar amounts in thousands). None of the officers or directors of these members currently serve on the FHLBank’s board of directors. Table 15.1 03/31/2018 Member Name State Total Class A Stock Par Value Percent of Total Class A Total Class B Stock Par Value Percent of Total Class B Total Capital Stock Par Value Percent of Total Capital Stock BOKF, N.A. OK $ 500 0.3 % $ 296,874 20.7 % $ 297,374 18.5 % MidFirst Bank OK 500 0.3 234,123 16.3 234,623 14.6 Capitol Federal Savings Bank KS 500 0.3 195,126 13.6 195,626 12.2 TOTAL $ 1,500 0.9 % $ 726,123 50.6 % $ 727,623 45.3 % Table 15.2 12/31/2017 Member Name State Total Class A Stock Par Value Percent of Total Class A Total Class B Stock Par Value Percent of Total Class B Total Capital Stock Par Value Percent of Total Capital Stock BOKF, N.A. OK $ 27,450 11.6 % $ 251,750 17.9 % $ 279,200 17.0 % MidFirst Bank OK 500 0.2 229,014 16.3 229,514 13.9 Capitol Federal Savings Bank KS 500 0.2 194,970 13.8 195,470 11.9 TOTAL $ 28,450 12.0 % $ 675,734 48.0 % $ 704,184 42.8 % Advance and deposit balances with members that owned more than 10 percent of outstanding FHLBank regulatory capital stock as of March 31, 2018 and December 31, 2017 are summarized in Table 15.3 (dollar amounts in thousands). Table 15.3 03/31/2018 12/31/2017 03/31/2018 12/31/2017 Member Name Outstanding Advances Percent of Total Outstanding Advances Percent of Total Outstanding Deposits Percent of Total Outstanding Deposits Percent of Total BOKF, N.A. $ 5,700,000 21.1 % $ 5,100,000 19.4 % $ 23,544 3.8 % $ 20,486 4.5 % MidFirst Bank 5,025,000 18.6 5,100,000 19.4 248 — 266 0.1 Capitol Federal Savings Bank 2,175,000 8.0 2,175,000 8.3 261 0.1 262 0.1 TOTAL $ 12,900,000 47.7 % $ 12,375,000 47.1 % $ 24,053 3.9 % $ 21,014 4.7 % BOKF, N.A. , MidFirst Bank , and Capitol Federal Savings Bank did not sell any mortgage loans into the MPF Program during the three months ended March 31, 2018 and 2017 . Transactions with FHLBank Directors’ Financial Institutions: Table 15.4 presents information as of March 31, 2018 and December 31, 2017 for members that had an officer or director serving on the FHLBank’s board of directors (dollar amounts in thousands). Information is only included for the period in which the officer or director served on the FHLBank’s board of directors. Capital stock listed is regulatory capital stock, which includes mandatorily redeemable capital stock. Table 15.4 03/31/2018 12/31/2017 Outstanding Amount Percent of Total Outstanding Amount Percent of Total Advances $ 138,295 0.5 % $ 168,017 0.6 % Deposits $ 11,877 1.9 % $ 9,138 2.0 % Class A Common Stock $ 3,915 2.3 % $ 4,829 2.0 % Class B Common Stock 8,157 0.6 7,693 0.5 TOTAL CAPITAL STOCK $ 12,072 0.8 % $ 12,522 0.8 % Table 15.5 presents mortgage loans acquired during the three months ended March 31, 2018 and 2017 for members that had an officer or director serving on the FHLBank’s board of directors in 2018 or 2017 (dollar amounts in thousands). Information is only included for the period in which the officer or director served on the FHLBank’s board of directors. Table 15.5 Three Months Ended 03/31/2018 03/31/2017 Amount Percent of Total Amount Percent of Total Mortgage loans acquired $ 20,766 5.4 % $ 28,866 10.0 %

Basis of Presentation (Policies

Basis of Presentation (Policies)	3 Months Ended
	Mar. 31, 2018
Accounting Policies [Abstract]
Basis of Presentation, Policy	Basis of Presentation: The accompanying interim financial statements of the Federal Home Loan Bank of Topeka (FHLBank or FHLBank Topeka) are unaudited and have been prepared in accordance with accounting principles generally accepted in the United States of America (GAAP) for interim financial information and with the instruction provided by Article 10, Rule 10-01 of Regulation S-X. The financial statements contain all adjustments which are, in the opinion of management, necessary for a fair statement of the FHLBank’s 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. The FHLBank’s significant accounting policies and certain other disclosures are set forth in the notes to the audited financial statements for the year ended December 31, 2017 . The interim financial statements presented herein should be read in conjunction with the FHLBank’s audited financial statements and notes thereto, which are included in the FHLBank’s annual report on Form 10-K filed with the Securities and Exchange Commission (SEC) on March 15, 2018 (annual report on Form 10-K). The notes to the interim financial statements highlight significant changes to the notes included in the annual report on Form 10-K.
Use Of Estimates, Policy	Use of Estimates : The preparation of financial statements under GAAP requires management to make estimates and assumptions as of the date of the financial statements in determining the reported amounts of assets, liabilities and estimated fair values and in determining the disclosure of any contingent assets or liabilities. Estimates and assumptions by management also affect the reported amounts of income and expense during the reporting period. The most significant of these estimates include the fair value of trading and available-for-sale securities, the fair value of derivatives and the allowance for credit losses. Many of the estimates and assumptions, including those used in financial models, are based on financial market conditions as of the date of the financial statements. Because of the volatility of the financial markets, as well as other factors that affect management estimates, actual results may vary from these estimates.
Derivatives, Policy	Derivatives: All derivatives are recognized on the Statements of Condition at their fair values (including net accrued interest receivable or payable on the derivatives) and are reported as either derivative assets or derivative liabilities, net of cash collateral, including initial and certain variation margin, and accrued interest received or pledged by clearing agents and/or counterparties. The fair values of derivatives are netted by clearing agent or counterparty when the netting requirements have been met. If these netted amounts are positive, they are classified as an asset and, if negative, they are classified as a liability. Cash flows associated with derivatives are reflected as cash flows from operating activities in the Statements of Cash Flows unless the derivative meets the criteria to be a financing derivative. The FHLBank utilizes two Derivative Clearing Organizations (Clearinghouses) for all cleared derivative transactions, LCH Limited and CME Clearing. Effective January 16, 2018, LCH Limited made certain amendments to its rulebook changing the legal characterization of variation margin payments to be daily settlement payments rather than collateral, consistent with the amendment CME Clearing made effective January 3, 2017. At both Clearinghouses, initial margin is considered cash collateral.
Reclassification, Policy	Reclassifications : Certain immaterial amounts in the financial statements have been reclassified to conform to current period presentations.
New Accounting Pronouncements, Policy	Targeted Improvements to Accounting for Hedging Activities (Accounting Standards Update (ASU) 2017-12). In August 2017, FASB issued an amendment to simplify the application of hedge accounting guidance in current GAAP and to improve the financial reporting of hedging relationships to better portray the economic results of an entity's risk management activities in its financial statements. This guidance requires that, for fair value hedges, the entire change in the fair value of the hedging instrument included in the assessment of hedge effectiveness be presented in the same income statement line that is used to present the earnings effect of the hedged item. For cash flow hedges, the entire change in the fair value of the hedging instrument included in the assessment of hedge effectiveness must be recorded in other comprehensive income (OCI). In addition, the amendments include certain targeted improvements to the assessment of hedge effectiveness and permit, among other things, the following: • Measurement of the change in fair value of the hedged item on the basis of the benchmark rate component of the contractual coupon cash flows determined at hedge inception; • Measurement of the hedged item in a partial-term fair value hedge of interest rate risk by assuming the hedged item has a term that reflects only the designated cash flows being hedged; • Consideration only of how changes in the benchmark interest rate affect a decision to settle a prepayable instrument before its scheduled maturity in calculating the change in the fair value of the hedged item attributable to interest rate risk; and • For a cash flow hedge of interest rate risk of a variable rate financial instrument, an entity could designate the variability in cash flows attributable to the contractually specified interest rate as the hedged risk. The amendment will be effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, which is January 1, 2019 for the FHLBank, and early adoption is permitted in any interim period or fiscal year prior to the effective date. The FHLBank does not plan on early adoption. This guidance should be applied through a cumulative-effect adjustment directly to retained earnings as of the beginning of the fiscal year of adoption. The FHLBank is in the process of evaluating this guidance and its effect on the FHLBank's financial condition, results of operations and cash flows. Premium Amortization on Purchased Callable Debt Securities (ASU 2017-08). In March 2017, FASB issued an amendment to shorten the amortization period of any premium on callable debt securities to the first call date instead of over the contractual life of the instrument. The amendment does not require an accounting change for securities held at a discount; the discount continues to be amortized to maturity. The guidance is intended to reduce diversity in practice in the amortization of premiums and the consideration of how the potential of a security being called is factored into current impairment assessments. The amendment also intends to more closely align the amortization of premiums and discounts to the expectations incorporated into the market pricing of the instrument. The amendment will be effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, which is January 1, 2019 for the FHLBank, and early adoption is permitted. The FHLBank does not plan on early adoption. This guidance should be applied using a modified retrospective method through a cumulative-effect adjustment directly to retained earnings as of the beginning of the period of adoption. The adoption of this guidance is not expected to have a material effect on the FHLBank's financial condition, results of operations or cash flows. Improving the Presentation of Net Periodic Pension Cost and Net Periodic Postretirement Benefit Cost (ASU 2017-07). In March 2017, FASB issued an amendment to improve the presentation of net periodic pension cost and net periodic postretirement benefit cost. The amendment requires that the employer disaggregate the service cost component and the other components of net benefit cost and allow only the service cost component of net benefit cost to be eligible for capitalization. The amendment is intended to provide transparency, consistency, and usefulness to users of financial statements. The amendment became effective for annual periods, and interim periods within those annual periods, beginning on January 1, 2018 for the FHLBank. This guidance was applied retrospectively for the presentation of the service cost component and the other components of net periodic pension cost and net periodic postretirement benefit cost in the income statement and prospectively, on and after the effective date, for the capitalization of the service cost component of net periodic pension cost and net periodic postretirement benefit in assets. The adoption of this guidance did not have a material effect on the FHLBank's financial condition, results of operations or cash flows. Classification of Certain Cash Receipts and Cash Payments (ASU 2016-15). In August 2016, FASB issued amendments to clarify guidance on the classification of certain cash receipts and payments in the statement of cash flows. This guidance is intended to reduce existing diversity in practice in how certain cash receipts and cash payments are presented and classified in the statement of cash flows. This guidance became effective for the FHLBank for interim and annual periods and applied retrospectively, beginning on January 1, 2018. The adoption of this guidance did not have an impact on the FHLBank's financial condition, results of operations or cash flows. Measurement of Credit Losses on Financial Instruments (ASU 2016-13). In June 2016, FASB issued amended guidance for the accounting of credit losses on financial instruments. The amendments require entities to measure expected credit losses based on relevant information about past events, including historical experience, current conditions, and reasonable and supportable forecasts that affect the collectability of the reported amount. An entity must use judgment in determining the relevant information and estimation methods that are appropriate in its circumstances. Additionally, under the new guidance, a financial asset, or a group of financial assets, measured at amortized cost basis is required to be presented at the net amount expected to be collected. The guidance also requires: • The statement of income to reflect the measurement of credit losses for newly recognized financial assets, as well as the expected increases or decreases of expected credit losses that have taken place during the period; • The entities to determine the allowance for credit losses for purchased financial assets with a more-than-insignificant amount of credit deterioration since origination that are measured at amortized cost basis in a similar manner to other financial assets measured at amortized cost basis. The initial allowance for credit losses is required to be added to the purchase price; • Credit losses relating to available-for-sale debt securities to be recorded through an allowance for credit losses. The amendments limit the allowance for credit losses to the amount by which fair value is below amortized cost; and • Public entities to further disaggregate the current disclosure of credit quality indicators in relation to the amortized cost of financing receivables by the year of origination (i.e., vintage). The guidance is effective for the FHLBank for interim and annual periods beginning on January 1, 2020. Early application is permitted as of the interim and annual reporting periods beginning after December 15, 2018. The FHLBank does not plan on early adoption. The guidance should be applied using a modified-retrospective approach, through a cumulative-effect adjustment to retained earnings as of the beginning of the first reporting period in which the guidance is effective. In addition, entities are required to use a prospective transition approach for debt securities for which an other-than-temporary impairment (OTTI) charge had been recognized before the effective date. The FHLBank has formed an internal working group that has begun its implementation efforts by identifying key interpretive issues and potential impacts to processes and systems that will eventually determine the magnitude of the impact on the FHLBank's financial condition, results of operations and cash flows. Leases (ASU 2016-02). In February 2016, FASB issued amendments to lease accounting guidance. Under the new guidance, lessees will be required to recognize a lease liability and a right-of-use asset for all leases in the statement of financial condition, which effectively removes a source of off-balance sheet financing for operating leases. A distinction remains between finance leases and operating leases, but the assets and liabilities arising from operating leases are now also required to be recognized in the statement of financial condition. Lessor accounting is largely unchanged. The amendments are effective for annual periods, and interim periods within those annual periods, beginning after December 15, 2018, which is January 1, 2019 for the FHLBank. The FHLBank does not plan on early adoption. The FHLBank has a limited number of lease agreements and has concluded that the impact of the guidance is not expected to have a material effect on the FHLBank's financial condition, results of operations or cash flows. Recognition and Measurement of Financial Assets and Financial Liabilities (ASU 2016-01). In January 2016, FASB issued amendments to improve the recognition, measurement, presentation and disclosure of financial instruments through changes to existing GAAP. The provisions impacting the FHLBank include the elimination of the requirement to disclose the method and significant assumptions used to estimate the fair value of financial instruments carried at amortized cost, the requirement to use the notion of exit price when measuring the fair value of financial instruments for disclosure purposes, and the separate presentation of financial assets and financial liabilities by measurement category and form of asset (i.e., securities or loans and receivables) on the statement of financial condition or in the notes to financial statements. The amendments became effective for annual periods, and interim periods within those annual periods, beginning on January 1, 2018 for the FHLBank. This guidance will impact disclosures related to the fair value of financial instruments. However, this guidance did not have an impact on the FHLBank's financial condition, results of operations or cash flows. Revenue Recognition (ASU 2014-09). In May 2014, FASB issued guidance to introduce a new revenue recognition model in which an entity should recognize revenue to depict the transfer of promised goods or services to customers in an amount that reflects the consideration to which the entity expects to be entitled in exchange for those goods or services. This guidance also requires disclosures sufficient to enable users to understand the nature, amount, timing, and uncertainty of revenue and cash flows arising from contracts with customers, including qualitative and quantitative disclosures about contracts with customers, significant judgments and changes in judgments, and assets recognized from the costs to obtain or fulfill a contract. In July 2015, FASB voted to defer the effective date of the new standard by one year. In addition, in March 2016, FASB issued amendments to clarify the implementation guidance on principal versus agent considerations, in particular, relating to how an entity should determine whether the entity is a principal or an agent for each specified good or service promised to the customer and the nature of each specified good or service. The amendments do not change the core principle in the new revenue standard. The standard became effective for fiscal years, including interim periods within those fiscal years, beginning on January 1, 2018 for the FHLBank. Because the guidance does not apply to revenue associated with financial instruments, including loans and securities that are accounted for under other GAAP, the adoption of this guidance did not have a material impact on its financial condition, results of operations or cash flows.
Finance, Loan and Lease Receivables, Held-for-investment, Allowance and Nonperforming Loans, Allowance Policy	The FHLBank has established an allowance methodology for each of its portfolio segments: credit products (advances, letters of credit and other extensions of credit to borrowers); government mortgage loans held for portfolio; conventional mortgage loans held for portfolio; the direct financing lease receivable; term Federal funds sold; and term securities purchased under agreements to resell. Based on management's analyses of each portfolio segment, the FHLBank has only established an allowance for credit losses on its conventional mortgage loans held for portfolio.
Fair Value Transfer, Policy	The FHLBank reviews its fair value hierarchy classifications on a quarterly basis. Changes in the observability of the valuation inputs may result in a reclassification of certain assets or liabilities.

Investment Securities (Tables)

Investment Securities (Tables)	3 Months Ended
	Mar. 31, 2018
Trading Securities [Member]
Investment Holdings [Line Items]
Trading Securities by Major Security Type	Trading securities by major security type as of March 31, 2018 and December 31, 2017 are summarized in Table 3.1 (in thousands): Table 3.1 Fair Value 03/31/2018 12/31/2017 Non-mortgage-backed securities: Certificates of deposit $ 1,299,865 $ 584,984 GSE obligations 1 1,194,194 1,353,083 Non-mortgage-backed securities 2,494,059 1,938,067 Mortgage-backed securities: U.S. obligation MBS 2 554 580 GSE MBS 3 909,052 930,768 Mortgage-backed securities 909,606 931,348 TOTAL $ 3,403,665 $ 2,869,415 1 Represents debentures issued by other FHLBanks, Federal National Mortgage Association (Fannie Mae), Federal Farm Credit Bank (Farm Credit) and Federal Agricultural Mortgage Corporation (Farmer Mac). GSE securities are not guaranteed by the U.S. government. 2 Represents single-family MBS issued by Government National Mortgage Association (Ginnie Mae), which are guaranteed by the U.S. government. 3 Represents single-family and multi-family MBS issued by Fannie Mae and Federal Home Loan Mortgage Corporation (Freddie Mac).
Net Gains (Losses) on Trading Securities	Net gains (losses) on trading securities during the three months ended March 31, 2018 and 2017 are shown in Table 3.2 (in thousands): Table 3.2 Three Months Ended 03/31/2018 03/31/2017 Net gains (losses) on trading securities held as of March 31, 2018 $ (26,941 ) $ 7,051 Net gains (losses) on trading securities sold or matured prior to March 31, 2018 (9 ) (2,364 ) NET GAINS (LOSSES) ON TRADING SECURITIES $ (26,950 ) $ 4,687
Available-for-sale Securities [Member]
Investment Holdings [Line Items]
Available-for-sale Securities by Major Security Type	Available-for-sale securities by major security type as of March 31, 2018 are summarized in Table 3.3 (in thousands): Table 3.3 03/31/2018 Amortized Cost Gross Unrecognized Gains Gross Unrecognized Losses Fair Value Mortgage-backed securities: GSE MBS 1 $ 1,503,100 $ 36,503 $ (1,155 ) $ 1,538,448 TOTAL $ 1,503,100 $ 36,503 $ (1,155 ) $ 1,538,448 1 Represents fixed rate multi-family MBS issued by Fannie Mae . Available-for-sale securities by major security type as of December 31, 2017 are summarized in Table 3.4 (in thousands): Table 3.4 12/31/2017 Amortized Gross Gross Fair Value Mortgage-backed securities: GSE MBS 1 $ 1,462,025 $ 31,638 $ (432 ) $ 1,493,231 TOTAL $ 1,462,025 $ 31,638 $ (432 ) $ 1,493,231 1 Represents fixed rate multi-family MBS issued by Fannie Mae .
Securities in A Continuous Unrealized Loss Position	Table 3.5 summarizes the available-for-sale securities with unrealized losses as of March 31, 2018 (in thousands). The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. Table 3.5 03/31/2018 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Mortgage-backed securities: GSE MBS 1 $ 162,469 $ (1,155 ) $ — $ — $ 162,469 $ (1,155 ) TOTAL TEMPORARILY IMPAIRED SECURITIES $ 162,469 $ (1,155 ) $ — $ — $ 162,469 $ (1,155 ) 1 Represents fixed rate multi-family MBS issued by Fannie Mae . Table 3.6 summarizes the available-for-sale securities with unrealized losses as of December 31, 2017 (in thousands). The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. Table 3.6 12/31/2017 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses Mortgage-backed securities: GSE MBS 1 $ 84,937 $ (432 ) $ — $ — $ 84,937 $ (432 ) TOTAL TEMPORARILY IMPAIRED SECURITIES $ 84,937 $ (432 ) $ — $ — $ 84,937 $ (432 ) 1 Represents fixed rate multi-family MBS issued by Fannie Mae .
Held-to-maturity Securities [Member]
Investment Holdings [Line Items]
Securities in A Continuous Unrealized Loss Position	Table 3.9 summarizes the held-to-maturity securities with unrealized losses as of March 31, 2018 (in thousands). The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. Table 3.9 03/31/2018 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses 1 Non-mortgage-backed securities: State or local housing agency obligations $ — $ — $ 25,531 $ (4,469 ) $ 25,531 $ (4,469 ) Non-mortgage-backed securities — — 25,531 (4,469 ) 25,531 (4,469 ) Mortgage-backed securities: U.S. obligation MBS 2 21,116 (48 ) 14,604 (61 ) 35,720 (109 ) GSE MBS 3 1,330,090 (1,615 ) 1,453,802 (13,955 ) 2,783,892 (15,570 ) Private-label residential MBS 3,377 (9 ) 57,516 (2,011 ) 60,893 (2,020 ) Mortgage-backed securities 1,354,583 (1,672 ) 1,525,922 (16,027 ) 2,880,505 (17,699 ) TOTAL TEMPORARILY IMPAIRED SECURITIES $ 1,354,583 $ (1,672 ) $ 1,551,453 $ (20,496 ) $ 2,906,036 $ (22,168 ) 1 Total unrealized losses in Table 3.9 will not agree to total gross unrecognized losses in Table 3.7 . Total unrealized losses in Table 3.9 include non-credit-related OTTI recognized in accumulated OCI (AOCI) and gross unrecognized gains on previously other-than-temporarily impaired securities. 2 Represents single-family MBS issued by Ginnie Mae. 3 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac. Table 3.10 summarizes the held-to-maturity securities with unrealized losses as of December 31, 2017 (in thousands). The unrealized losses are aggregated by major security type and length of time that individual securities have been in a continuous unrealized loss position. Table 3.10 12/31/2017 Less Than 12 Months 12 Months or More Total Fair Value Unrealized Losses Fair Value Unrealized Losses Fair Value Unrealized Losses 1 Non-mortgage-backed securities: State or local housing agency obligations $ — $ — $ 25,104 $ (4,896 ) $ 25,104 $ (4,896 ) Non-mortgage-backed securities — — 25,104 (4,896 ) 25,104 (4,896 ) Mortgage-backed securities: U.S obligation MBS 2 37,944 (88 ) — — 37,944 (88 ) GSE MBS 3 796,378 (1,363 ) 1,478,510 (13,377 ) 2,274,888 (14,740 ) Private-label residential MBS 150 (1 ) 64,477 (2,314 ) 64,627 (2,315 ) Mortgage-backed securities 834,472 (1,452 ) 1,542,987 (15,691 ) 2,377,459 (17,143 ) TOTAL TEMPORARILY IMPAIRED SECURITIES $ 834,472 $ (1,452 ) $ 1,568,091 $ (20,587 ) $ 2,402,563 $ (22,039 ) 1 Total unrealized losses in Table 3.10 will not agree to total gross unrecognized losses in Table 3.8 . Total unrealized losses in Table 3.10 include non-credit-related OTTI recognized in AOCI and gross unrecognized gains on previously other-than-temporarily impaired securities. 2 Represents single-family MBS issued by Ginnie Mae. 3 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac.
Held-To-Maturity Securities by Major Security Type	Held-to-maturity securities by major security type as of March 31, 2018 are summarized in Table 3.7 (in thousands): Table 3.7 03/31/2018 Amortized Cost OTTI Recognized in AOCI Carrying Value Gross Unrecognized Gains Gross Unrecognized Losses Fair Value Non-mortgage-backed securities: State or local housing agency obligations $ 89,830 $ — $ 89,830 $ 70 $ (4,469 ) $ 85,431 Non-mortgage-backed securities 89,830 — 89,830 70 (4,469 ) 85,431 Mortgage-backed securities: U.S. obligation MBS 1 122,802 — 122,802 448 (109 ) 123,141 GSE MBS 2 4,842,240 — 4,842,240 15,005 (15,570 ) 4,841,675 Private-label residential MBS 75,804 (3,862 ) 71,942 5,317 (1,498 ) 75,761 Mortgage-backed securities 5,040,846 (3,862 ) 5,036,984 20,770 (17,177 ) 5,040,577 TOTAL $ 5,130,676 $ (3,862 ) $ 5,126,814 $ 20,840 $ (21,646 ) $ 5,126,008 1 Represents single-family MBS issued by Ginnie Mae. 2 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac. Held-to-maturity securities by major security type as of December 31, 2017 are summarized in Table 3.8 (in thousands): Table 3.8 12/31/2017 Amortized Cost OTTI Recognized in AOCI Carrying Value Gross Unrecognized Gains Gross Unrecognized Losses Fair Value Non-mortgage-backed securities: State or local housing agency obligations $ 89,830 $ — $ 89,830 $ 74 $ (4,896 ) $ 85,008 Non-mortgage-backed securities 89,830 — 89,830 74 (4,896 ) 85,008 Mortgage-backed securities: U.S obligation MBS 1 127,588 — 127,588 435 (88 ) 127,935 GSE MBS 2 4,561,839 — 4,561,839 15,548 (14,740 ) 4,562,647 Private-label residential MBS 81,731 (4,163 ) 77,568 5,456 (1,618 ) 81,406 Mortgage-backed securities 4,771,158 (4,163 ) 4,766,995 21,439 (16,446 ) 4,771,988 TOTAL $ 4,860,988 $ (4,163 ) $ 4,856,825 $ 21,513 $ (21,342 ) $ 4,856,996 1 Represents single-family MBS issued by Ginnie Mae. 2 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac.
Held-To-Maturity Securities Classified By Contractual Maturity	The amortized cost, carrying value and fair values of held-to-maturity securities by contractual maturity as of March 31, 2018 and December 31, 2017 are shown in Table 3.11 (in thousands). Expected maturities of certain securities will differ from contractual maturities because borrowers may have the right to call or prepay obligations with or without call or prepayment fees. Table 3.11 03/31/2018 12/31/2017 Amortized Cost Carrying Value Fair Value Amortized Cost Carrying Value Fair Value Non-mortgage-backed securities: Due in one year or less $ — $ — $ — $ — $ — $ — Due after one year through five years — — — — — — Due after five years through 10 years — — — — — — Due after 10 years 89,830 89,830 85,431 89,830 89,830 85,008 Non-mortgage-backed securities 89,830 89,830 85,431 89,830 89,830 85,008 Mortgage-backed securities 5,040,846 5,036,984 5,040,577 4,771,158 4,766,995 4,771,988 TOTAL $ 5,130,676 $ 5,126,814 $ 5,126,008 $ 4,860,988 $ 4,856,825 $ 4,856,996
Proceeds from sale and Gains and Losses on HTM Securities	Table 3.12 presents details of the sales (in thousands). No held-to-maturity securities were sold during the three months ended March 31, 2017. Table 3.12 Three Months Ended 03/31/2018 Proceeds from sale of held-to-maturity securities $ 8,406 Carrying value of held-to-maturity securities sold (8,372 ) NET REALIZED GAINS (LOSSES) $ 34
Other than Temporary Impairment Losses, Investments [Abstract]
Total Securities Other-Than-Temporarily Impaired during the Life of the Security	Other-than-temporary Impairment: For the 21 outstanding private-label residential MBS with OTTI during the lives of the securities, the FHLBank’s reported balances as of March 31, 2018 are presented in Table 3.13 (in thousands): Table 3.13 03/31/2018 Unpaid Principal Balance Amortized Cost Carrying Value Fair Value Private-label residential MBS: Prime $ 7,261 $ 6,417 $ 5,909 $ 6,832 Alt-A 22,567 19,952 16,598 20,912 TOTAL $ 29,828 $ 26,369 $ 22,507 $ 27,744
Rollforward of OTTI Activity Related to Credit Losses	Table 3.14 presents a roll-forward of OTTI activity for the three months ended March 31, 2018 and 2017 related to credit losses recognized in earnings (in thousands): Table 3.14 Three Months Ended 03/31/2018 03/31/2017 Balance, beginning of period $ 7,663 $ 7,502 Additional charge on securities for which OTTI was previously recognized 1 22 37 Amortization of credit component of OTTI 2 (106 ) (69 ) Balance, end of period $ 7,579 $ 7,470 1 For the three months ended March 31, 2018 and 2017, securities previously impaired represent all securities that were impaired prior to January 1, 2018 and 2017, respectively. 2 The FHLBank amortizes the credit component based on estimated cash flows prospectively up to the amount of expected principal to be recovered. The discounted cash flows will move from the discounted loss value to the ultimate principal to be written off at the projected date of loss. If the expected cash flows improve, the amount of expected loss decreases which causes a corresponding decrease in the calculated amortization. Based on the level of improvement in the cash flows, the amortization could become a positive adjustment to income.

Advances (Tables)

Advances (Tables)	3 Months Ended
	Mar. 31, 2018
Advances [Abstract]
Advances Table	Table 4.2 presents advances summarized by contractual maturity or next call date (for callable advances) and by contractual maturity or next conversion date (for convertible advances) as of March 31, 2018 and December 31, 2017 (in thousands): Table 4.2 Year of Contractual Maturity or Next Call Date Year of Contractual Maturity or Next Conversion Date Redemption Term 03/31/2018 12/31/2017 03/31/2018 12/31/2017 Due in one year or less $ 21,974,310 $ 21,375,728 $ 15,139,886 $ 14,450,744 Due after one year through two years 916,132 881,835 1,208,757 1,342,342 Due after two years through three years 1,210,457 897,151 1,633,406 1,186,087 Due after three years through four years 549,677 790,641 996,440 1,083,984 Due after four years through five years 439,112 522,768 1,026,790 1,174,277 Thereafter 1,971,844 1,857,101 7,056,253 7,087,790 TOTAL PAR VALUE $ 27,061,532 $ 26,325,224 $ 27,061,532 $ 26,325,224 Interest Rate Payment Terms : Table 4.3 details additional interest rate payment terms for advances as of March 31, 2018 and December 31, 2017 (in thousands): Table 4.3 03/31/2018 12/31/2017 Fixed rate: Due in one year or less $ 2,551,071 $ 2,079,061 Due after one year 5,094,394 4,957,303 Total fixed rate 7,645,465 7,036,364 Variable rate: Due in one year or less 12,499,315 12,295,683 Due after one year 6,916,752 6,993,177 Total variable rate 19,416,067 19,288,860 TOTAL PAR VALUE $ 27,061,532 $ 26,325,224 Table 4.1 presents advances summarized by year of contractual maturity as of March 31, 2018 and December 31, 2017 (dollar amounts in thousands): Table 4.1 03/31/2018 12/31/2017 Year of Contractual Maturity Amount Weighted Average Interest Rate Amount Weighted Average Interest Rate Due in one year or less $ 15,050,386 1.78 % $ 14,374,744 1.55 % Due after one year through two years 1,124,757 1.90 1,219,842 1.73 Due after two years through three years 1,442,756 2.10 1,075,287 2.01 Due after three years through four years 915,940 2.12 971,634 2.16 Due after four years through five years 770,790 2.11 918,277 1.96 Thereafter 7,756,903 1.98 7,765,440 1.74 Total par value 27,061,532 1.88 % 26,325,224 1.67 % Discounts (6,807 ) (8,111 ) Hedging adjustments (76,375 ) (21,264 ) TOTAL $ 26,978,350 $ 26,295,849

Mortgage Loans (Tables)

Mortgage Loans (Tables)	3 Months Ended
	Mar. 31, 2018
Mortgage Loans on Real Estate [Abstract]
Mortgage Loans Held For Portfolio	Table 5.1 presents information as of March 31, 2018 and December 31, 2017 on mortgage loans held for portfolio (in thousands): Table 5.1 03/31/2018 12/31/2017 Real estate: Fixed rate, medium-term 1 , single-family mortgages $ 1,248,857 $ 1,273,893 Fixed rate, long-term, single-family mortgages 6,106,735 5,900,863 Total unpaid principal balance 7,355,592 7,174,756 Premiums 110,192 109,898 Discounts (2,918 ) (2,380 ) Deferred loan costs, net 262 280 Other deferred fees (58 ) (60 ) Hedging adjustments 3,591 5,111 Total before Allowance for Credit Losses on Mortgage Loans 7,466,661 7,287,605 Allowance for Credit Losses on Mortgage Loans (1,057 ) (1,208 ) MORTGAGE LOANS HELD FOR PORTFOLIO, NET $ 7,465,604 $ 7,286,397 1 Medium-term defined as a term of 15 years or less at origination. Table 5.2 presents information as of March 31, 2018 and December 31, 2017 on the outstanding unpaid principal balance (UPB) of mortgage loans held for portfolio (in thousands): Table 5.2 03/31/2018 12/31/2017 Conventional loans $ 6,645,651 $ 6,477,696 Government-guaranteed or -insured loans 709,941 697,060 TOTAL UNPAID PRINCIPAL BALANCE $ 7,355,592 $ 7,174,756

Allowance For Credit Losses (Ta

Allowance For Credit Losses (Tables)	3 Months Ended
	Mar. 31, 2018
Receivables [Abstract]
Rollforward of Allowance for Credit Losses on Mortgage Loans	Table 6.1 presents a roll-forward of the allowance for credit losses for the three months ended March 31, 2018 and 2017 (in thousands). Table 6.1 Three Months Ended 03/31/2018 03/31/2017 Balance, beginning of the period $ 1,208 $ 1,674 Net (charge-offs) recoveries (181 ) (12 ) (Reversal) provision for credit losses 30 (45 ) Balance, end of the period $ 1,057 $ 1,617 Table 6.2 presents the allowance for credit losses and the recorded investment as well as the method used to evaluate impairment relating to all portfolio segments regardless of whether or not an estimated credit loss has been recorded as of March 31, 2018 (in thousands). The recorded investment in a financing receivable is the UPB, adjusted for accrued interest, net deferred loan fees or costs, unamortized premiums or discounts, fair value hedging adjustments and direct write-downs. The recorded investment is not net of any valuation allowance. Table 6.2 03/31/2018 Conventional Loans Government Loans Credit Products 1 Direct Financing Lease Receivable Total Allowance for credit losses: Individually evaluated for impairment $ 30 $ — $ — $ — $ 30 Collectively evaluated for impairment 1,027 — — — 1,027 TOTAL ALLOWANCE FOR CREDIT LOSSES $ 1,057 $ — $ — $ — $ 1,057 Recorded investment: Individually evaluated for impairment $ 11,044 $ — $ 27,019,326 $ 14,184 $ 27,044,554 Collectively evaluated for impairment 6,768,397 723,476 — — 7,491,873 TOTAL RECORDED INVESTMENT $ 6,779,441 $ 723,476 $ 27,019,326 $ 14,184 $ 34,536,427 1 The recorded investment for credit products includes only advances. The recorded investment for all other credit products is insignificant. Table 6.3 presents the allowance for credit losses and the recorded investment as well as the method used to evaluate impairment relating to all portfolio segments regardless of whether or not an estimated credit loss has been recorded as of March 31, 2017 (in thousands): Table 6.3 03/31/2017 Conventional Government Credit 1 Direct Total Allowance for credit losses: Individually evaluated for impairment $ — $ — $ — $ — $ — Collectively evaluated for impairment 1,617 — — — 1,617 TOTAL ALLOWANCE FOR CREDIT LOSSES $ 1,617 $ — $ — $ — $ 1,617 Recorded investment: Individually evaluated for impairment $ 11,883 $ — $ 25,848,675 $ 16,763 $ 25,877,321 Collectively evaluated for impairment 6,056,998 665,794 — — 6,722,792 TOTAL RECORDED INVESTMENT $ 6,068,881 $ 665,794 $ 25,848,675 $ 16,763 $ 32,600,113 1 The recorded investment for credit products includes only advances. The recorded investment for all other credit products is insignificant.
Recorded Investment in Delinquent Mortgage Loans	Table 6.4 summarizes the delinquency aging and key credit quality indicators for all of the FHLBank’s portfolio segments as of March 31, 2018 (dollar amounts in thousands): Table 6.4 03/31/2018 Conventional Loans Government Loans Credit Products 1 Direct Financing Lease Receivable Total Recorded investment: Past due 30-59 days delinquent $ 41,200 $ 17,393 $ — $ — $ 58,593 Past due 60-89 days delinquent 7,286 5,000 — — 12,286 Past due 90 days or more delinquent 10,643 5,551 — — 16,194 Total past due 59,129 27,944 — — 87,073 Total current loans 6,720,312 695,532 27,019,326 14,184 34,449,354 Total recorded investment $ 6,779,441 $ 723,476 $ 27,019,326 $ 14,184 $ 34,536,427 Other delinquency statistics: In process of foreclosure, included above 2 $ 5,018 $ 2,409 $ — $ — $ 7,427 Serious delinquency rate 3 0.2 % 0.8 % — % — % — % Past due 90 days or more and still accruing interest $ — $ 5,551 $ — $ — $ 5,551 Loans on non-accrual status 4 $ 14,649 $ — $ — $ — $ 14,649 1 The recorded investment for credit products includes only advances. The recorded investment for all other credit products is insignificant. 2 Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans dependent on their delinquency status. 3 Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment for the portfolio class. 4 Loans on non-accrual status include $1,336,000 of troubled debt restructurings. Troubled debt restructurings are restructurings in which the FHLBank, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider. Table 6.5 summarizes the key credit quality indicators for all of the FHLBank’s portfolio segments as of December 31, 2017 (dollar amounts in thousands): Table 6.5 12/31/2017 Conventional Loans Government Loans Credit Products 1 Direct Financing Lease Receivable Total Recorded investment: Past due 30-59 days delinquent $ 37,606 $ 17,775 $ — $ — $ 55,381 Past due 60-89 days delinquent 7,898 4,501 — — 12,399 Past due 90 days or more delinquent 12,794 6,273 — — 19,067 Total past due 58,298 28,549 — — 86,847 Total current loans 6,552,971 682,833 26,330,455 14,833 33,581,092 Total recorded investment $ 6,611,269 $ 711,382 $ 26,330,455 $ 14,833 $ 33,667,939 Other delinquency statistics: In process of foreclosure, included above 2 $ 4,167 $ 1,595 $ — $ — $ 5,762 Serious delinquency rate 3 0.2 % 0.9 % — % — % 0.1 % Past due 90 days or more and still accruing interest $ — $ 6,273 $ — $ — $ 6,273 Loans on non-accrual status 4 $ 16,570 $ — $ — $ — $ 16,570 1 The recorded investment for credit products includes only advances. The recorded investment for all other credit products is insignificant. 2 Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans dependent on their delinquency status. 3 Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment for the portfolio class. 4 Loans on non-accrual status include $1,398,000 of troubled debt restructurings. Troubled debt restructurings are restructurings in which the FHLBank, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider.
Impaired Financing Receivables	Table 6.6 presents the recorded investment, UPB, and related allowance of impaired conventional mortgage loans individually assessed for impairment as of March 31, 2018 and December 31, 2017 (in thousands): Table 6.6 03/31/2018 12/31/2017 Recorded Investment Unpaid Principal Balance Related Allowance Recorded Investment Unpaid Principal Balance Related Allowance With no related allowance $ 10,911 $ 10,851 $ — $ 10,925 $ 10,875 $ — With an allowance 133 134 30 134 136 39 TOTAL $ 11,044 $ 10,985 $ 30 $ 11,059 $ 11,011 $ 39 Table 6.7 presents the average recorded investment and related interest income recognized on these individually evaluated impaired loans during the three months ended March 31, 2018 and 2017 (in thousands): Table 6.7 Three Months Ended 03/31/2018 03/31/2017 Average Recorded Investment Interest Income Recognized Average Recorded Investment Interest Income Recognized With no related allowance $ 10,700 $ 56 $ 11,652 $ 74 With an allowance 133 — — — TOTAL $ 10,833 $ 56 $ 11,652 $ 74

Derivatives And Hedging Activ29

Derivatives And Hedging Activities (Tables)	3 Months Ended
	Mar. 31, 2018
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Fair Value of Derivative Instruments	Table 7.1 presents outstanding notional amounts and fair values of the derivatives outstanding by type of derivative and by hedge designation as of March 31, 2018 and December 31, 2017 (in thousands). Total derivative assets and liabilities include the effect of netting adjustments and cash collateral. Table 7.1 03/31/2018 12/31/2017 Notional Amount Derivative Assets Derivative Liabilities Notional Amount Derivative Assets Derivative Liabilities Derivatives designated as hedging instruments: Interest rate swaps $ 7,775,702 $ 93,981 $ 21,190 $ 7,219,084 $ 56,159 $ 19,971 Total derivatives designated as hedging relationships 7,775,702 93,981 21,190 7,219,084 56,159 19,971 Derivatives not designated as hedging instruments: Interest rate swaps 3,628,730 20,978 21,390 3,529,299 3,243 21,672 Interest rate caps/floors 2,304,200 1,527 — 2,344,200 1,011 — Mortgage delivery commitments 133,764 283 26 77,585 73 43 Total derivatives not designated as hedging instruments 6,066,694 22,788 21,416 5,951,084 4,327 21,715 TOTAL $ 13,842,396 116,769 42,606 $ 13,170,168 60,486 41,686 Netting adjustments and cash collateral 1 (75,824 ) (41,347 ) (23,456 ) (39,269 ) DERIVATIVE ASSETS AND LIABILITIES $ 40,945 $ 1,259 $ 37,030 $ 2,417 1 Amounts represent the application of the netting requirements that allow the FHLBank to settle positive and negative positions cash collateral, including initial or certain variation margin, and related accrued interest held or placed with the same clearing agent and/or derivative counterparty. Cash collateral posted was $62,492,000 and $56,508,000 as of March 31, 2018 and December 31, 2017 , respectively. Cash collateral received was $96,969,000 and $40,695,000 as of March 31, 2018 and December 31, 2017 , respectively.
Net Gains(Losses) on Derivatives and Hedging Activities	For the three months ended March 31, 2018 and 2017 , the FHLBank recorded net gains (losses) on derivatives and hedging activities as presented in Table 7.2 (in thousands): Table 7.2 Three Months Ended 03/31/2018 03/31/2017 Derivatives designated as hedging instruments: Interest rate swaps $ (1,974 ) $ (1,330 ) Total net gains (losses) related to fair value hedge ineffectiveness (1,974 ) (1,330 ) Derivatives not designated as hedging instruments: Economic hedges: Interest rate swaps 21,258 8,248 Interest rate caps/floors 515 (1,608 ) Net interest settlements (1,690 ) (5,183 ) Mortgage delivery commitments (1,283 ) 490 Total net gains (losses) related to derivatives not designated as hedging instruments 18,800 1,947 Other 1 (183 ) (14 ) NET GAINS (LOSSES) ON DERIVATIVES AND HEDGING ACTIVITIES $ 16,643 $ 603 1 Amount represents price alignment amount on derivatives for which variation margin is characterized as a daily settled contract.
Effect of Fair Value Hedge-Related Derivative Instruments	For the three months ended March 31, 2018 and 2017 , the FHLBank recorded net gains (losses) on derivatives and the related hedged items in fair value hedging relationships and the impact of those derivatives on the FHLBank’s net interest income as presented in Table 7.3 (in thousands): Table 7.3 Three Months Ended 03/31/2018 03/31/2017 Gains (Losses) on Derivatives Gains (Losses) on Hedged Items Net Fair Value Hedge Ineffectiveness Effect of Derivatives on Net Interest Income 1 Gains (Losses) on Derivatives Gains (Losses) on Hedged Items Net Fair Value Hedge Ineffectiveness Effect of Derivatives on Net Interest Income 1 Advances $ 51,154 $ (53,954 ) $ (2,800 ) $ (3,621 ) $ 18,116 $ (18,228 ) $ (112 ) $ (16,491 ) Investments 35,406 (35,028 ) 378 (1,080 ) 3,266 (3,813 ) (547 ) (2,715 ) Consolidated obligation bonds (17,062 ) 17,510 448 923 (4,220 ) 3,585 (635 ) 5,519 Consolidated obligation discount notes — — — — 16 (52 ) (36 ) (15 ) TOTAL $ 69,498 $ (71,472 ) $ (1,974 ) $ (3,778 ) $ 17,178 $ (18,508 ) $ (1,330 ) $ (13,702 ) 1 The differentials between accruals of interest receivables and payables on derivatives designated as fair value hedges as well as the amortization/accretion of hedging activities are recognized as adjustments to the interest income or expense of the designated underlying hedged item.

Deposits (Tables)

Deposits (Tables)	3 Months Ended
	Mar. 31, 2018
Deposits [Abstract]
Deposits	Table 8.1 details the types of deposits held by the FHLBank as of March 31, 2018 and December 31, 2017 (in thousands): Table 8.1 03/31/2018 12/31/2017 Interest-bearing: Demand $ 228,107 $ 246,831 Overnight 333,900 161,900 Total interest-bearing 562,007 408,731 Non-interest-bearing: Demand 61,315 53,038 Total non-interest-bearing 61,315 53,038 TOTAL DEPOSITS $ 623,322 $ 461,769

Consolidated Obligations (Table

Consolidated Obligations (Tables)	3 Months Ended
	Mar. 31, 2018
Debt Disclosure [Abstract]
Consolidated Bonds Obligations Outstanding By Maturity	Table 9.2 summarizes the FHLBank’s participation in consolidated obligation bonds outstanding by year of maturity, or by the next call date for callable bonds as of March 31, 2018 and December 31, 2017 (in thousands): Table 9.2 Year of Maturity or Next Call Date 03/31/2018 12/31/2017 Due in one year or less $ 15,284,190 $ 17,243,440 Due after one year through two years 10,182,650 5,460,000 Due after two years through three years 787,150 830,300 Due after three years through four years 287,800 259,050 Due after four years through five years 260,900 280,650 Thereafter 446,600 434,100 TOTAL PAR VALUE $ 27,249,290 $ 24,507,540 Table 9.1 presents the FHLBank’s participation in consolidated obligation bonds outstanding as of March 31, 2018 and December 31, 2017 (dollar amounts in thousands): Table 9.1 03/31/2018 12/31/2017 Year of Contractual Maturity Amount Weighted Average Interest Rate Amount Weighted Average Interest Rate Due in one year or less $ 9,064,190 1.67 % $ 11,098,440 1.40 % Due after one year through two years 10,168,650 1.73 6,001,000 1.46 Due after two years through three years 2,057,150 1.80 1,240,300 1.60 Due after three years through four years 982,800 1.75 1,249,050 1.66 Due after four years through five years 1,000,900 1.97 865,650 1.97 Thereafter 3,975,600 2.59 4,053,100 2.57 Total par value 27,249,290 1.85 % 24,507,540 1.65 % Premiums 18,764 19,795 Discounts (3,441 ) (2,843 ) Concession fees (9,993 ) (9,753 ) Hedging adjustments (17,781 ) (271 ) TOTAL $ 27,236,839 $ 24,514,468
Consolidated Bonds by Interest-Rate Payment Type	Table 9.3 summarizes interest rate payment terms for consolidated obligation bonds as of March 31, 2018 and December 31, 2017 (in thousands): Table 9.3 03/31/2018 12/31/2017 Simple variable rate $ 14,690,000 $ 12,900,000 Fixed rate 11,549,290 10,597,540 Fixed to variable rate 535,000 535,000 Step 460,000 430,000 Range 15,000 45,000 TOTAL PAR VALUE $ 27,249,290 $ 24,507,540
Consolidated Discount Notes Outstanding	Table 9.4 summarizes the FHLBank’s participation in consolidated obligation discount notes, all of which are due within one year (dollar amounts in thousands): Table 9.4 Book Value Par Value Weighted Average Interest Rate 1 March 31, 2018 $ 22,606,383 $ 22,638,501 1.59 % December 31, 2017 $ 20,420,651 $ 20,445,225 1.23 % 1 Represents yield to maturity excluding concession fees.

Assets and Liabilities Subjec32

Assets and Liabilities Subject to Offsetting (Tables)	3 Months Ended
	Mar. 31, 2018
Offsetting [Abstract]
Schedule of Offsetting Assets	Tables 10.1 and 10.2 present the fair value of financial assets, including the related collateral received from or pledged to clearing agents or counterparties, based on the terms of the FHLBank’s master netting arrangements or similar agreements as of March 31, 2018 and December 31, 2017 (in thousands): Table 10.1 03/31/2018 Description Gross Amounts of Recognized Assets Gross Amounts Offset in the Statement of Condition Net Amounts of Assets Presented in the Statement of Condition Gross Amounts Not Offset in the Statement of Condition 1 Net Amount Derivative assets: Uncleared derivatives $ 115,961 $ (109,864 ) $ 6,097 $ (3,110 ) $ 2,987 Cleared derivatives 808 34,040 34,848 — 34,848 Total derivative assets 116,769 (75,824 ) 40,945 (3,110 ) 37,835 Securities purchased under agreements to resell 3,206,045 — 3,206,045 (3,206,045 ) — TOTAL $ 3,322,814 $ (75,824 ) $ 3,246,990 $ (3,209,155 ) $ 37,835 1 Represents noncash collateral received on financial instruments that: (1) do not qualify for netting on the Statement of Condition; or (2) are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments). Table 10.2 12/31/2017 Description Gross Amounts of Recognized Assets Gross Amounts Offset in the Statement of Condition Net Amounts of Assets Presented in the Statement of Condition Gross Amounts Not Offset in the Statement of Condition 1 Net Amount Derivative assets: Uncleared derivatives $ 54,164 $ (52,330 ) $ 1,834 $ (73 ) $ 1,761 Cleared derivatives 6,322 28,874 35,196 — 35,196 Total derivative assets 60,486 (23,456 ) 37,030 (73 ) 36,957 Securities purchased under agreements to resell 3,161,446 — 3,161,446 (3,161,446 ) — TOTAL $ 3,221,932 $ (23,456 ) $ 3,198,476 $ (3,161,519 ) $ 36,957 1 Represents noncash collateral received on financial instruments that: (1) do not qualify for netting on the Statement of Condition; or (2) are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments).
Schedule of Offsetting Liabilities	Tables 10.3 and 10.4 present the fair value of financial liabilities, including the related collateral received from or pledged to counterparties, based on the terms of the FHLBank’s master netting arrangements or similar agreements as of March 31, 2018 and December 31, 2017 (in thousands): Table 10.3 03/31/2018 Description Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statement of Condition Net Amounts of Liabilities Presented in the Statement of Condition Gross Amounts Not Offset in the Statement of Condition 1 Net Amount Derivative liabilities: Uncleared derivatives $ 40,673 $ (39,414 ) $ 1,259 $ (26 ) $ 1,233 Cleared derivatives 1,933 (1,933 ) — — — Total derivative liabilities 42,606 (41,347 ) 1,259 (26 ) 1,233 TOTAL $ 42,606 $ (41,347 ) $ 1,259 $ (26 ) $ 1,233 1 Represents noncash collateral received on financial instruments that: (1) do not qualify for netting on the Statement of Condition; or (2) are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments). Table 10.4 12/31/2017 Description Gross Amounts of Recognized Liabilities Gross Amounts Offset in the Statement of Condition Net Amounts of Liabilities Presented in the Statement of Condition Gross Amounts Not Offset in the Statement of Condition 1 Net Amount Derivative liabilities: Uncleared derivatives $ 31,805 $ (29,388 ) $ 2,417 $ (43 ) $ 2,374 Cleared derivatives 9,881 (9,881 ) — — — Total derivative liabilities 41,686 (39,269 ) 2,417 (43 ) 2,374 TOTAL $ 41,686 $ (39,269 ) $ 2,417 $ (43 ) $ 2,374 1 Represents noncash collateral received on financial instruments that: (1) do not qualify for netting on the Statement of Condition; or (2) are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments).

Capital (Tables)

Capital (Tables)	3 Months Ended
	Mar. 31, 2018
Stockholders' Equity Note [Abstract]
Regulatory Capital Requirements	Table 11.1 illustrates that the FHLBank was in compliance with its regulatory capital requirements as of March 31, 2018 and December 31, 2017 (dollar amounts in thousands): Table 11.1 03/31/2018 12/31/2017 Required Actual Required Actual Regulatory capital requirements: Risk-based capital $ 487,274 $ 2,289,753 $ 380,750 $ 2,248,599 Total regulatory capital-to-asset ratio 4.0 % 4.6 % 4.0 % 5.2 % Total regulatory capital $ 2,125,994 $ 2,458,006 $ 1,923,064 $ 2,485,757 Leverage capital ratio 5.0 % 6.8 % 5.0 % 7.5 % Leverage capital $ 2,657,492 $ 3,602,883 $ 2,403,830 $ 3,610,056
Mandatorily Redeemable Capital Stock By Contractual Year Of Repurchase	Table 11.2 presents a roll-forward of mandatorily redeemable capital stock for the three months ended March 31, 2018 and 2017 (in thousands): Table 11.2 Three Months Ended 03/31/2018 03/31/2017 Balance, beginning of period $ 5,312 $ 2,670 Capital stock subject to mandatory redemption reclassified from equity during the period 100,390 173,395 Redemption or repurchase of mandatorily redeemable capital stock during the period (100,734 ) (173,814 ) Stock dividend classified as mandatorily redeemable capital stock during the period 61 13 Balance, end of period $ 5,029 $ 2,264 Table 11.3 shows the amount of mandatorily redeemable capital stock by contractual year of redemption as of March 31, 2018 and December 31, 2017 (in thousands). The year of redemption in Table 11.3 is the end of the redemption period in accordance with the FHLBank’s capital plan. The FHLBank is not required to redeem or repurchase membership stock until six months (for Class A Common Stock) or five years (for Class B Common Stock) after the FHLBank receives notice for withdrawal. Additionally, the FHLBank is not required to redeem or repurchase activity-based stock until any activity-based stock becomes excess stock as a result of an activity no longer remaining outstanding. However, the FHLBank intends to repurchase the excess activity-based stock of non-members to the extent that it can do so and still meet its regulatory capital requirements. Table 11.3 Contractual Year of Repurchase 03/31/2018 12/31/2017 Year 1 $ 1 $ 1 Year 2 — — Year 3 — — Year 4 20 245 Year 5 3,039 3,039 Past contractual redemption date due to remaining activity 1 1,969 2,027 TOTAL $ 5,029 $ 5,312 1 Represents mandatorily redeemable capital stock that is past the end of the contractual redemption period because there is activity outstanding to which the mandatorily redeemable capital stock relates.

Accumulated Other Comprehensi34

Accumulated Other Comprehensive Income (Tables)	3 Months Ended
	Mar. 31, 2018
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract]
Accumulated Other Comprehensive Income Or Loss	Table 12.1 summarizes the changes in AOCI for the three months ended March 31, 2018 and 2017 (in thousands): Table 12.1 Three Months Ended Net Unrealized Gains (Losses) on Available-for-Sale Securities Net Non-credit Portion of OTTI Gains (Losses) on Held-to-maturity Securities Defined Benefit Pension Plan Total AOCI Balance at December 31, 2016 $ 9,345 $ (5,841 ) $ (2,927 ) $ 577 Other comprehensive income (loss) before reclassification: Unrealized gains (losses) 8,485 8,485 Non-credit OTTI losses (4 ) (4 ) Accretion of non-credit loss 376 376 Reclassifications from other comprehensive income (loss) to net income: Non-credit OTTI to credit OTTI 1 37 37 Amortization of net losses - defined benefit pension plan 2 57 57 Net current period other comprehensive income (loss) 8,485 409 57 8,951 Balance at March 31, 2017 $ 17,830 $ (5,432 ) $ (2,870 ) $ 9,528 Balance at December 31, 2017 $ 31,206 $ (4,163 ) $ (1,385 ) $ 25,658 Other comprehensive income (loss) before reclassification: Unrealized gains (losses) 4,142 4,142 Accretion of non-credit loss 279 279 Reclassifications from other comprehensive income (loss) to net income: Non-credit OTTI to credit OTTI 1 22 22 Amortization of net losses - defined benefit pension plan 2 7 7 Net current period other comprehensive income (loss) 4,142 301 7 4,450 Balance at March 31, 2018 $ 35,348 $ (3,862 ) $ (1,378 ) $ 30,108 1 Recorded in “Net other-than-temporary impairment losses on held-to-maturity securities” on the Statements of Income. Amount represents a debit (decrease to other income (loss)). 2 Recorded in “Other” non-interest expense on the Statements of Income. Amount represents a debit (increase to other expenses).

Fair Values (Tables)

Fair Values (Tables)	3 Months Ended
	Mar. 31, 2018
Fair Value Disclosures [Abstract]
Fair Value Summary	The carrying value and fair value of the FHLBank’s financial assets and liabilities as of March 31, 2018 and December 31, 2017 are summarized in Tables 13.1 and 13.2 (in thousands): Table 13.1 03/31/2018 Carrying Value Total Fair Value Level 1 Level 2 Level 3 Netting Adjustment and Cash Collateral 1 Assets: Cash and due from banks $ 25,333 $ 25,333 $ 25,333 $ — $ — $ — Interest-bearing deposits 880,799 880,799 — 880,799 — — Securities purchased under agreements to resell 3,206,045 3,206,045 — 3,206,045 — — Federal funds sold 4,282,000 4,282,000 — 4,282,000 — — Trading securities 3,403,665 3,403,665 — 3,403,665 — — Available-for-sale securities 1,538,448 1,538,448 — 1,538,448 — — Held-to-maturity securities 5,126,814 5,126,008 — 4,964,816 161,192 — Advances 26,978,350 26,980,265 — 26,980,265 — — Mortgage loans held for portfolio, net of allowance 7,465,604 7,441,731 — 7,439,485 2,246 — Accrued interest receivable 96,742 96,742 — 96,742 — — Derivative assets 40,945 40,945 — 116,769 — (75,824 ) Liabilities: Deposits 623,322 623,322 — 623,322 — — Consolidated obligation discount notes 22,606,383 22,605,003 — 22,605,003 — — Consolidated obligation bonds 27,236,839 26,969,191 — 26,969,191 — — Mandatorily redeemable capital stock 5,029 5,029 5,029 — — — Accrued interest payable 74,485 74,485 — 74,485 — — Derivative liabilities 1,259 1,259 — 42,606 — (41,347 ) Other Asset (Liability): Industrial revenue bonds 29,000 26,585 — 26,585 — — Financing obligation payable (29,000 ) (26,585 ) — (26,585 ) — — Standby letters of credit (1,276 ) (1,276 ) — (1,276 ) — — Standby bond purchase agreements 93 2,583 — 2,583 — — Advance commitments — (8,433 ) — (8,433 ) — — 1 Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty . Table 13.2 12/31/2017 Carrying Value Total Fair Value Level 1 Level 2 Level 3 Netting Adjustment and Cash Collateral 1 Assets: Cash and due from banks $ 268,050 $ 268,050 $ 268,050 $ — $ — $ — Interest-bearing deposits 442,682 442,682 — 442,682 — — Securities purchased under agreements to resell 3,161,446 3,161,446 — 3,161,446 — — Federal funds sold 1,175,000 1,175,000 — 1,175,000 — — Trading securities 2,869,415 2,869,415 — 2,869,415 — — Available-for-sale securities 1,493,231 1,493,231 — 1,493,231 — — Held-to-maturity securities 4,856,825 4,856,996 — 4,690,582 166,414 — Advances 26,295,849 26,306,432 — 26,306,432 — — Mortgage loans held for portfolio, net of allowance 7,286,397 7,400,508 — 7,398,878 1,630 — Accrued interest receivable 85,547 85,547 — 85,547 — — Derivative assets 37,030 37,030 — 60,486 — (23,456 ) Liabilities: Deposits 461,769 461,769 — 461,769 — — Consolidated obligation discount notes 20,420,651 20,419,168 — 20,419,168 — — Consolidated obligation bonds 24,514,468 24,374,595 — 24,374,595 — — Mandatorily redeemable capital stock 5,312 5,312 5,312 — — — Accrued interest payable 56,116 56,116 — 56,116 — — Derivative liabilities 2,417 2,417 — 41,686 — (39,269 ) Other Asset (Liability): Industrial revenue bonds 29,000 27,137 — 27,137 — — Financing obligation payable (29,000 ) (27,137 ) — (27,137 ) — — Standby letters of credit (1,246 ) (1,246 ) — (1,246 ) — — Standby bond purchase agreements 385 2,812 — 2,812 — — Advance commitments — (8,069 ) — (8,069 ) — — 1 Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty.
Hierarchy Level for Financial Assets and Liabilities - Recurring and Nonrecurring	Tables 13.3 and 13.4 present, for each hierarchy level, the FHLBank’s assets and liabilities that are measured at fair value on a recurring or nonrecurring basis on the Statements of Condition as of or for the periods ended March 31, 2018 and December 31, 2017 (in thousands). The FHLBank measures certain held-to-maturity securities at fair value on a nonrecurring basis due to the recognition of a credit loss. For held-to-maturity securities that had credit impairment recorded during a period for which no total impairment was recorded (the full amount of additional credit impairment was a reclassification from non-credit impairment previously recorded in AOCI), these securities were recorded at their carrying values and not fair value. The FHLBank measures certain impaired mortgage loans held for portfolio at fair value on a nonrecurring basis when, upon individual evaluation for impairment, the estimated fair value less costs to sell is lower than the recorded investment. REO is initially recorded at fair value less estimated selling costs and is subsequently carried at the lower of that amount or current fair value. Table 13.3 03/31/2018 Total Level 1 Level 2 Level 3 Netting Adjustment and Cash Collateral 1 Recurring fair value measurements - Assets: Trading securities: Certificates of deposit $ 1,299,865 $ — $ 1,299,865 $ — $ — GSE obligations 2 1,194,194 — 1,194,194 — — U.S. obligation MBS 3 554 — 554 — — GSE MBS 4 909,052 — 909,052 — — Total trading securities 3,403,665 — 3,403,665 — — Available-for-sale securities: GSE MBS 5 1,538,448 — 1,538,448 — — Total available-for-sale securities 1,538,448 — 1,538,448 — — Derivative assets: Interest-rate related 40,662 — 116,486 — (75,824 ) Mortgage delivery commitments 283 — 283 — — Total derivative assets 40,945 — 116,769 — (75,824 ) TOTAL RECURRING FAIR VALUE MEASUREMENTS - ASSETS $ 4,983,058 $ — $ 5,058,882 $ — $ (75,824 ) Recurring fair value measurements - Liabilities: Derivative liabilities: Interest-rate related $ 1,233 $ — $ 42,580 $ — $ (41,347 ) Mortgage delivery commitments 26 — 26 — — Total derivative liabilities 1,259 — 42,606 — (41,347 ) TOTAL RECURRING FAIR VALUE MEASUREMENTS - LIABILITIES $ 1,259 $ — $ 42,606 $ — $ (41,347 ) Nonrecurring fair value measurements - Assets 6 : Held-to-maturity securities: Impaired mortgage loans $ 2,236 $ — $ — $ 2,236 $ — Real estate owned 1,268 — — 1,268 — TOTAL NONRECURRING FAIR VALUE MEASUREMENTS - ASSETS $ 3,504 $ — $ — $ 3,504 $ — 1 Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral, related accrued interest held or placed with the same clearing agent or derivative counterparty. 2 Represents debentures issued by other FHLBanks, Fannie Mae, Farm Credit and Farmer Mac. 3 Represents single-family MBS issued by Ginnie Mae. 4 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac. 5 Represents multi-family MBS issued by Fannie Mae. 6 Includes assets adjusted to fair value during the three months ended March 31, 2018 and still outstanding as of March 31, 2018 . Table 13.4 12/31/2017 Total Level 1 Level 2 Level 3 Netting Adjustment and Cash Collateral 1 Recurring fair value measurements - Assets: Trading securities: Certificates of deposit $ 584,984 $ — $ 584,984 $ — $ — GSE obligations 2 1,353,083 — 1,353,083 — — U.S. obligation MBS 3 580 — 580 — — GSE MBS 4 930,768 — 930,768 — — Total trading securities 2,869,415 — 2,869,415 — — Available-for-sale securities: GSE MBS 5 1,493,231 — 1,493,231 — — Total available-for-sale securities 1,493,231 — 1,493,231 — — Derivative assets: Interest-rate related 36,957 — 60,413 — (23,456 ) Mortgage delivery commitments 73 — 73 — — Total derivative assets 37,030 — 60,486 — (23,456 ) TOTAL RECURRING FAIR VALUE MEASUREMENTS - ASSETS $ 4,399,676 $ — $ 4,423,132 $ — $ (23,456 ) Recurring fair value measurements - Liabilities: Derivative liabilities: Interest-rate related $ 2,374 $ — $ 41,643 $ — $ (39,269 ) Mortgage delivery commitments 43 — 43 — — Total derivative liabilities 2,417 — 41,686 — (39,269 ) TOTAL RECURRING FAIR VALUE MEASUREMENTS - LIABILITIES $ 2,417 $ — $ 41,686 $ — $ (39,269 ) Nonrecurring fair value measurements - Assets 6 : Held-to-maturity securities: Private-label residential MBS $ 4,097 $ — $ — $ 4,097 $ — Impaired mortgage loans 1,633 — — 1,633 — Real estate owned 1,031 — — 1,031 — TOTAL NONRECURRING FAIR VALUE MEASUREMENTS - ASSETS $ 6,761 $ — $ — $ 6,761 $ — 1 Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty. 2 Represents debentures issued by other FHLBanks, Fannie Mae, Farm Credit and Farmer Mac. 3 Represents single-family MBS issued by Ginnie Mae. 4 Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac. 5 Represents multi-family MBS issued by Fannie Mae. 6 Includes assets adjusted to fair value during the year ended December 31, 2017 and still outstanding as of December 31, 2017 .

Commitments And Contingencies (

Commitments And Contingencies (Tables)	3 Months Ended
	Mar. 31, 2018
Commitments and Contingencies Disclosure [Abstract]
Off Balance Sheet Commitments	As of March 31, 2018 and December 31, 2017 , off-balance sheet commitments are presented in Table 14.1 (in thousands): Table 14.1 03/31/2018 12/31/2017 Notional Amount Expire Within One Year Expire After One Year Total Expire Within One Year Expire After One Year Total Standby letters of credit outstanding $ 3,844,830 $ 45,377 $ 3,890,207 $ 3,410,258 $ 7,238 $ 3,417,496 Advance commitments outstanding 41,500 99,230 140,730 70,025 99,475 169,500 Commitments for standby bond purchases 442,451 389,114 831,565 354,410 543,967 898,377 Commitments to fund or purchase mortgage loans 133,764 — 133,764 77,585 — 77,585 Commitments to issue consolidated bonds, at par 1,000 — 1,000 5,000 — 5,000 Commitments to issue consolidated discount notes, at par 800,000 — 800,000 — — —

Transactions With Stockholders

Transactions With Stockholders (Tables)	3 Months Ended
	Mar. 31, 2018
Related Party Transactions, by Balance Sheet Grouping	Tables 15.1 and 15.2 present information on members that owned more than 10 percent of outstanding FHLBank regulatory capital stock as of March 31, 2018 and December 31, 2017 (dollar amounts in thousands). None of the officers or directors of these members currently serve on the FHLBank’s board of directors. Table 15.1 03/31/2018 Member Name State Total Class A Stock Par Value Percent of Total Class A Total Class B Stock Par Value Percent of Total Class B Total Capital Stock Par Value Percent of Total Capital Stock BOKF, N.A. OK $ 500 0.3 % $ 296,874 20.7 % $ 297,374 18.5 % MidFirst Bank OK 500 0.3 234,123 16.3 234,623 14.6 Capitol Federal Savings Bank KS 500 0.3 195,126 13.6 195,626 12.2 TOTAL $ 1,500 0.9 % $ 726,123 50.6 % $ 727,623 45.3 % Table 15.2 12/31/2017 Member Name State Total Class A Stock Par Value Percent of Total Class A Total Class B Stock Par Value Percent of Total Class B Total Capital Stock Par Value Percent of Total Capital Stock BOKF, N.A. OK $ 27,450 11.6 % $ 251,750 17.9 % $ 279,200 17.0 % MidFirst Bank OK 500 0.2 229,014 16.3 229,514 13.9 Capitol Federal Savings Bank KS 500 0.2 194,970 13.8 195,470 11.9 TOTAL $ 28,450 12.0 % $ 675,734 48.0 % $ 704,184 42.8 % Advance and deposit balances with members that owned more than 10 percent of outstanding FHLBank regulatory capital stock as of March 31, 2018 and December 31, 2017 are summarized in Table 15.3 (dollar amounts in thousands). Table 15.3 03/31/2018 12/31/2017 03/31/2018 12/31/2017 Member Name Outstanding Advances Percent of Total Outstanding Advances Percent of Total Outstanding Deposits Percent of Total Outstanding Deposits Percent of Total BOKF, N.A. $ 5,700,000 21.1 % $ 5,100,000 19.4 % $ 23,544 3.8 % $ 20,486 4.5 % MidFirst Bank 5,025,000 18.6 5,100,000 19.4 248 — 266 0.1 Capitol Federal Savings Bank 2,175,000 8.0 2,175,000 8.3 261 0.1 262 0.1 TOTAL $ 12,900,000 47.7 % $ 12,375,000 47.1 % $ 24,053 3.9 % $ 21,014 4.7 %
Related Party Transactions, by Balance Sheet Grouping - Directors'	Table 15.4 presents information as of March 31, 2018 and December 31, 2017 for members that had an officer or director serving on the FHLBank’s board of directors (dollar amounts in thousands). Information is only included for the period in which the officer or director served on the FHLBank’s board of directors. Capital stock listed is regulatory capital stock, which includes mandatorily redeemable capital stock. Table 15.4 03/31/2018 12/31/2017 Outstanding Amount Percent of Total Outstanding Amount Percent of Total Advances $ 138,295 0.5 % $ 168,017 0.6 % Deposits $ 11,877 1.9 % $ 9,138 2.0 % Class A Common Stock $ 3,915 2.3 % $ 4,829 2.0 % Class B Common Stock 8,157 0.6 7,693 0.5 TOTAL CAPITAL STOCK $ 12,072 0.8 % $ 12,522 0.8 %
Schedule Of Related Party Transactions, Mortgage Loans Disclosure	Table 15.5 presents mortgage loans acquired during the three months ended March 31, 2018 and 2017 for members that had an officer or director serving on the FHLBank’s board of directors in 2018 or 2017 (dollar amounts in thousands). Information is only included for the period in which the officer or director served on the FHLBank’s board of directors. Table 15.5 Three Months Ended 03/31/2018 03/31/2017 Amount Percent of Total Amount Percent of Total Mortgage loans acquired $ 20,766 5.4 % $ 28,866 10.0 %

Investment Securities (Narrativ

Investment Securities (Narrative) (Details)	Mar. 31, 2018
Private-label residential MBS [Member] | Residential MBS [Member]
Investment [Line Items]
Held-to-Maturity Securities, Other Than Temporarily Impaired, Number of Securities, Life to Date	21

Investment Securities Investmen

Investment Securities Investment Securities (Trading Securities by Major Security Type) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities		$ 3,403,665	$ 2,869,415
Certificates of Deposit [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities		1,299,865	584,984
GSE obligations [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	[1]	1,194,194	1,353,083
Non-mortgage-backed securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities		2,494,059	1,938,067
U.S. obligation MBS [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	[2]	554	580
GSE MBS [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities	[3]	909,052	930,768
Mortgage-backed securities [Member]
Schedule of Trading Securities and Other Trading Assets [Line Items]
Trading securities		$ 909,606	$ 931,348
[1]	Represents debentures issued by other FHLBanks, Federal National Mortgage Association (Fannie Mae), Federal Farm Credit Bank (Farm Credit) and Federal Agricultural Mortgage Corporation (Farmer Mac). GSE securities are not guaranteed by the U.S. government.
[2]	Represents single-family MBS issued by Government National Mortgage Association (Ginnie Mae), which are guaranteed by the U.S. government.
[3]	Represents single-family and multi-family MBS issued by Fannie Mae and Federal Home Loan Mortgage Corporation (Freddie Mac).

Investment Securities (Net Gain

Investment Securities (Net Gains (Losses) on Trading Securities) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Net gains (losses) on trading securities held as of current period end	$ (26,941)	$ 7,051
Net gains (losses) on trading securities sold or matured prior to current period end	(9)	(2,364)
NET GAINS (LOSSES) ON TRADING SECURITIES	$ (26,950)	$ 4,687

Investment Securities (Availabl

Investment Securities (Available-For-Sale Securities by Major Security Type) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost		$ 1,503,100	$ 1,462,025
Gross Unrecognized Gains		36,503	31,638
Gross Unrecognized Losses		(1,155)	(432)
Fair Value		1,538,448	1,493,231
Fixed rate [Member] | GSE MBS [Member]
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	[1]	1,503,100	1,462,025
Gross Unrecognized Gains	[1]	36,503	31,638
Gross Unrecognized Losses	[1]	(1,155)	(432)
Fair Value	[1]	$ 1,538,448	$ 1,493,231
[1]	Represents fixed rate multi-family MBS issued by Fannie Mae.

Investment Securities (Availa42

Investment Securities (Available-For-Sale Securities in a Continuous Unrealized Loss Position) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 Months, Fair Value		$ 162,469	$ 84,937
Less than 12 Months, Unrealized Losses		(1,155)	(432)
12 Months or More, Fair Value		0	0
12 Months or More, Unrealized Losses		0	0
TOTAL TEMPORARILY IMPAIRED SECURITIES, Fair Value		162,469	84,937
TOTAL TEMPORARILY IMPAIRED SECURITIES, Unrealized Losses		(1,155)	(432)
Fixed rate [Member] | GSE MBS [Member]
Available-for-sale Securities, Continuous Unrealized Loss Position [Abstract]
Less than 12 Months, Fair Value	[1]	162,469	84,937
Less than 12 Months, Unrealized Losses	[1]	(1,155)	(432)
12 Months or More, Fair Value	[1]	0	0
12 Months or More, Unrealized Losses	[1]	0	0
TOTAL TEMPORARILY IMPAIRED SECURITIES, Fair Value	[1]	162,469	84,937
TOTAL TEMPORARILY IMPAIRED SECURITIES, Unrealized Losses	[1]	$ (1,155)	$ (432)
[1]	Represents fixed rate multi-family MBS issued by Fannie Mae.

Investment Securities (Held-To-

Investment Securities (Held-To-Maturity Securities by Major Security Type) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Held-to-maturity Securities, Unclassified [Abstract]
Amortized Cost		$ 5,130,676	$ 4,860,988
OTTI Recognized in AOCI		(3,862)	(4,163)
Carrying Value	[1]	5,126,814	4,856,825
Gross Unrecognized Gains		20,840	21,513
Gross Unrecognized Losses		(21,646)	(21,342)
Held-to-maturity Securities, Fair Value		5,126,008	4,856,996
State or local housing agency obligations [Member]
Held-to-maturity Securities, Unclassified [Abstract]
Amortized Cost		89,830	89,830
OTTI Recognized in AOCI		0	0
Carrying Value		89,830	89,830
Gross Unrecognized Gains		70	74
Gross Unrecognized Losses		(4,469)	(4,896)
Held-to-maturity Securities, Fair Value		85,431	85,008
Non-mortgage-backed securities [Member]
Held-to-maturity Securities, Unclassified [Abstract]
Amortized Cost		89,830	89,830
OTTI Recognized in AOCI		0	0
Carrying Value		89,830	89,830
Gross Unrecognized Gains		70	74
Gross Unrecognized Losses		(4,469)	(4,896)
Held-to-maturity Securities, Fair Value		85,431	85,008
U.S. obligation MBS [Member]
Held-to-maturity Securities, Unclassified [Abstract]
Amortized Cost	[2]	122,802	127,588
OTTI Recognized in AOCI	[2]	0	0
Carrying Value	[2]	122,802	127,588
Gross Unrecognized Gains	[2]	448	435
Gross Unrecognized Losses	[2]	(109)	(88)
Held-to-maturity Securities, Fair Value	[2]	123,141	127,935
GSE MBS [Member]
Held-to-maturity Securities, Unclassified [Abstract]
Amortized Cost	[3]	4,842,240	4,561,839
OTTI Recognized in AOCI	[3]	0	0
Carrying Value	[3]	4,842,240	4,561,839
Gross Unrecognized Gains	[3]	15,005	15,548
Gross Unrecognized Losses	[3]	(15,570)	(14,740)
Held-to-maturity Securities, Fair Value	[3]	4,841,675	4,562,647
Private-label residential MBS [Member] | Residential MBS [Member]
Held-to-maturity Securities, Unclassified [Abstract]
Amortized Cost		75,804	81,731
OTTI Recognized in AOCI		(3,862)	(4,163)
Carrying Value		71,942	77,568
Gross Unrecognized Gains		5,317	5,456
Gross Unrecognized Losses		(1,498)	(1,618)
Held-to-maturity Securities, Fair Value		75,761	81,406
Mortgage-backed securities [Member]
Held-to-maturity Securities, Unclassified [Abstract]
Amortized Cost		5,040,846	4,771,158
OTTI Recognized in AOCI		(3,862)	(4,163)
Carrying Value		5,036,984	4,766,995
Gross Unrecognized Gains		20,770	21,439
Gross Unrecognized Losses		(17,177)	(16,446)
Held-to-maturity Securities, Fair Value		$ 5,040,577	$ 4,771,988
[1]	Fair value: $5,126,008 and $4,856,996 as of March 31, 2018 and December 31, 2017, respectively.
[2]	Represents single-family MBS issued by Ginnie Mae.
[3]	Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac.

Investment Securities (Held-T44

Investment Securities (Held-To-Maturity Securities in a Continuous Unrealized Loss Position) (Details) - USD ($) $ in Thousands		Mar. 31, 2018		Dec. 31, 2017
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value		$ 1,354,583		$ 834,472
Less Than 12 Months, Unrealized Losses		(1,672)		(1,452)
12 Months or More, Fair Value		1,551,453		1,568,091
12 Months or More, Unrealized Losses		(20,496)		(20,587)
TOTAL TEMPORARILY IMPAIRED SECURITIES, Fair Value		2,906,036		2,402,563
TOTAL TEMPORARILY IMPAIRED SECURITIES, Unrealized Losses		(22,168)	[1]	(22,039)	[2]
State or local housing agency obligations [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value		0		0
Less Than 12 Months, Unrealized Losses		0		0
12 Months or More, Fair Value		25,531		25,104
12 Months or More, Unrealized Losses		(4,469)		(4,896)
TOTAL TEMPORARILY IMPAIRED SECURITIES, Fair Value		25,531		25,104
TOTAL TEMPORARILY IMPAIRED SECURITIES, Unrealized Losses		(4,469)	[1]	(4,896)	[2]
Non-mortgage-backed securities [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value		0		0
Less Than 12 Months, Unrealized Losses		0		0
12 Months or More, Fair Value		25,531		25,104
12 Months or More, Unrealized Losses		(4,469)		(4,896)
TOTAL TEMPORARILY IMPAIRED SECURITIES, Fair Value		25,531		25,104
TOTAL TEMPORARILY IMPAIRED SECURITIES, Unrealized Losses		(4,469)	[1]	(4,896)	[2]
U.S. obligation MBS [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	[3]	21,116		37,944
Less Than 12 Months, Unrealized Losses	[3]	(48)		(88)
12 Months or More, Fair Value	[3]	14,604		0
12 Months or More, Unrealized Losses	[3]	(61)		0
TOTAL TEMPORARILY IMPAIRED SECURITIES, Fair Value	[3]	35,720		37,944
TOTAL TEMPORARILY IMPAIRED SECURITIES, Unrealized Losses	[3]	(109)	[1]	(88)	[2]
GSE MBS [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value	[4]	1,330,090		796,378
Less Than 12 Months, Unrealized Losses	[4]	(1,615)		(1,363)
12 Months or More, Fair Value	[4]	1,453,802		1,478,510
12 Months or More, Unrealized Losses	[4]	(13,955)		(13,377)
TOTAL TEMPORARILY IMPAIRED SECURITIES, Fair Value	[4]	2,783,892		2,274,888
TOTAL TEMPORARILY IMPAIRED SECURITIES, Unrealized Losses	[4]	(15,570)	[1]	(14,740)	[2]
Private-label residential MBS [Member] | Residential MBS [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value		3,377		150
Less Than 12 Months, Unrealized Losses		(9)		(1)
12 Months or More, Fair Value		57,516		64,477
12 Months or More, Unrealized Losses		(2,011)		(2,314)
TOTAL TEMPORARILY IMPAIRED SECURITIES, Fair Value		60,893		64,627
TOTAL TEMPORARILY IMPAIRED SECURITIES, Unrealized Losses		(2,020)	[1]	(2,315)	[2]
Mortgage-backed securities [Member]
Held-to-maturity Securities, Continuous Unrealized Loss Position [Abstract]
Less Than 12 Months, Fair Value		1,354,583		834,472
Less Than 12 Months, Unrealized Losses		(1,672)		(1,452)
12 Months or More, Fair Value		1,525,922		1,542,987
12 Months or More, Unrealized Losses		(16,027)		(15,691)
TOTAL TEMPORARILY IMPAIRED SECURITIES, Fair Value		2,880,505		2,377,459
TOTAL TEMPORARILY IMPAIRED SECURITIES, Unrealized Losses		$ (17,699)	[1]	$ (17,143)	[2]
[1]	Total unrealized losses in Table 3.9 will not agree to total gross unrecognized losses in Table 3.7. Total unrealized losses in Table 3.9 include non-credit-related OTTI recognized in accumulated OCI (AOCI) and gross unrecognized gains on previously other-than-temporarily impaired securities.
[2]	Total unrealized losses in Table 3.10 will not agree to total gross unrecognized losses in Table 3.8. Total unrealized losses in Table 3.10 include non-credit-related OTTI recognized in AOCI and gross unrecognized gains on previously other-than-temporarily impaired securities.
[3]	Represents single-family MBS issued by Ginnie Mae.
[4]	Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac.

Investment Securities (Held-T45

Investment Securities (Held-To-Maturity Securities Classified By Contractual Maturity) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Held-to-maturity Securities, Debt Maturities [Abstract]
Amortized Cost		$ 5,130,676	$ 4,860,988
Carrying Value	[1]	5,126,814	4,856,825
Fair Value		5,126,008	4,856,996
Non-mortgage-backed securities [Member]
Held-to-maturity Securities, Debt Maturities [Abstract]
Due in one year or less, Amortized Cost		0	0
Due after one year through five years, Amortized Cost		0	0
Due after five years through 10 years, Amortized Cost		0	0
Due after 10 years, Amortized Cost		89,830	89,830
Amortized Cost		89,830	89,830
Due in one year or less, Carrying Value		0	0
Due after one year through five years, Carrying Value		0	0
Due after five years through 10 years, Carrying Value		0	0
Due after 10 years, Carrying Value		89,830	89,830
Carrying Value		89,830	89,830
Due in one year or less, Fair Value		0	0
Due after one year through five years, Fair Value		0	0
Due after five years through 10 years, Fair Value		0	0
Due after 10 years, Fair Value		85,431	85,008
Fair Value		85,431	85,008
Mortgage-backed securities [Member]
Held-to-maturity Securities, Debt Maturities [Abstract]
Amortized Cost		5,040,846	4,771,158
Carrying Value		5,036,984	4,766,995
Fair Value		$ 5,040,577	$ 4,771,988
[1]	Fair value: $5,126,008 and $4,856,996 as of March 31, 2018 and December 31, 2017, respectively.

Investment Securities Investm46

Investment Securities Investment Securities (Proceeds from Sale and Gains and Losses on HTM Securities) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Investments, Debt and Equity Securities [Abstract]
Proceeds from sale of held-to-maturity securities	$ 8,406	$ 0
Carrying value of held-to-maturity securities sold	(8,372)
NET REALIZED GAINS (LOSSES)	$ 34	$ 0

Investment Securities (Total Se

Investment Securities (Total Securities Other-Than-Temporary Impairment during the Life of the Security) (Details) - Held-to-maturity Securities [Member] - Residential MBS [Member] - Private-label residential MBS [Member] $ in Thousands	Mar. 31, 2018USD ($)
Schedule of Held-to-maturity Securities [Line Items]
Unpaid Principal Balance	$ 29,828
Amortized Cost	26,369
Carrying Value	22,507
Fair Value	27,744
Prime [Member]
Schedule of Held-to-maturity Securities [Line Items]
Unpaid Principal Balance	7,261
Amortized Cost	6,417
Carrying Value	5,909
Fair Value	6,832
Alt-A [Member]
Schedule of Held-to-maturity Securities [Line Items]
Unpaid Principal Balance	22,567
Amortized Cost	19,952
Carrying Value	16,598
Fair Value	$ 20,912

Investment Securities (Rollforw

Investment Securities (Rollforward of OTTI Activity Related to Credit Losses) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Other than Temporary Impairment, Credit Losses Recognized in Earnings [Roll Forward]
Balance, beginning of period		$ 7,663	$ 7,502
Additional charge on securities for which OTTI was previously recognized	[1]	22	37
Amortization of credit component of OTTI	[2]	(106)	(69)
Balance, end of period		$ 7,579	$ 7,470
[1]	For the three months ended March 31, 2018 and 2017, securities previously impaired represent all securities that were impaired prior to January 1, 2018 and 2017, respectively.
[2]	The FHLBank amortizes the credit component based on estimated cash flows prospectively up to the amount of expected principal to be recovered. The discounted cash flows will move from the discounted loss value to the ultimate principal to be written off at the projected date of loss. If the expected cash flows improve, the amount of expected loss decreases which causes a corresponding decrease in the calculated amortization. Based on the level of improvement in the cash flows, the amortization could become a positive adjustment to income.

Advances (Narrative) (Details)

Advances (Narrative) (Details)	Mar. 31, 2018Rate	Dec. 31, 2017Rate
Minimum [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, outstanding interest rate	0.68%	0.66%
Maximum [Member]
Federal Home Loan Bank, Advances [Line Items]
FHLB advances, outstanding interest rate	7.41%	7.41%

Advances (Advances Redemption T

Advances (Advances Redemption Terms) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Amount
Due in one year or less	$ 15,050,386	$ 14,374,744
Due after one year through two years	1,124,757	1,219,842
Due after two years through three years	1,442,756	1,075,287
Due after three years through four years	915,940	971,634
Due after four years through five years	770,790	918,277
Thereafter	7,756,903	7,765,440
TOTAL PAR VALUE	27,061,532	26,325,224
Discounts	(6,807)	(8,111)
Hedging adjustments	(76,375)	(21,264)
TOTAL	$ 26,978,350	$ 26,295,849
Weighted Average Interest Rate
Due in one year or less	1.78%	1.55%
Due after one year through two years	1.90%	1.73%
Due after two years through three years	2.10%	2.01%
Due after three years through four years	2.12%	2.16%
Due after four years through five years	2.11%	1.96%
Thereafter	1.98%	1.74%
Total par value	1.88%	1.67%

Advances (Advances by Year if C

Advances (Advances by Year if Contractual Maturity, Next Call Date, or Next Convert Date) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Redemption Term, Year of Contractual Maturity or Next Call Date
Due in one year or less	$ 21,974,310	$ 21,375,728
Due after one year through two years	916,132	881,835
Due after two years through three years	1,210,457	897,151
Due after three years through four years	549,677	790,641
Due after four years through five years	439,112	522,768
Thereafter	1,971,844	1,857,101
TOTAL PAR VALUE	27,061,532	26,325,224
Redemption Term, Year of Contractual Maturity or Next Conversion Date
Due in one year or less	15,139,886	14,450,744
Due after one year through two years	1,208,757	1,342,342
Due after two years through three years	1,633,406	1,186,087
Due after three years through four years	996,440	1,083,984
Due after four years through five years	1,026,790	1,174,277
Thereafter	7,056,253	7,087,790
TOTAL PAR VALUE	$ 27,061,532	$ 26,325,224

Advances (Advances by Interest

Advances (Advances by Interest Rate Payment Terms) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Fixed rate:
Due in one year or less	$ 2,551,071	$ 2,079,061
Due after one year	5,094,394	4,957,303
Total fixed rate	7,645,465	7,036,364
Variable rate:
Due in one year or less	12,499,315	12,295,683
Due after one year	6,916,752	6,993,177
Total variable rate	19,416,067	19,288,860
TOTAL PAR VALUE	$ 27,061,532	$ 26,325,224

Mortgage Loans (Mortgage Loans

Mortgage Loans (Mortgage Loans Held For Portfolio) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Real estate:
Total unpaid principal balance		$ 7,355,592	$ 7,174,756
Premiums		110,192	109,898
Discounts		(2,918)	(2,380)
Deferred loan costs, net		262	280
Other deferred fees		(58)	(60)
Hedging adjustments		3,591	5,111
Total before Allowance for Credit Losses on Mortgage Loans		7,466,661	7,287,605
Allowance for Credit Losses on Mortgage Loans		(1,057)	(1,208)
MORTGAGE LOANS HELD FOR PORTFOLIO, NET		7,465,604	7,286,397
Fixed rates, medium-term [Member] | Single-family mortgage [Member]
Real estate:
Total unpaid principal balance	[1]	1,248,857	1,273,893
Fixed rates, long-term [Member] | Single-family mortgage [Member]
Real estate:
Total unpaid principal balance		$ 6,106,735	$ 5,900,863
[1]	Medium-term defined as a term of 15 years or less at origination.

Mortgage Loans (Mortgage Loan54

Mortgage Loans (Mortgage Loans Held For Portfolio by Collateral or Guarantee Type) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Mortgage Loans on Real Estate [Line Items]
Total unpaid principal balance	$ 7,355,592	$ 7,174,756
Government-guaranteed or insured loans [Member]
Mortgage Loans on Real Estate [Line Items]
Total unpaid principal balance	709,941	697,060
Conventional Loan [Member]
Mortgage Loans on Real Estate [Line Items]
Total unpaid principal balance	$ 6,645,651	$ 6,477,696

Allowance For Credit Losses (Na

Allowance For Credit Losses (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Receivables [Abstract]
Real estate owned	$ 2,733	$ 2,539

Allowance For Credit Losses (Ro

Allowance For Credit Losses (Rollforward of Allowance For Credit Losses On Mortgage Loans) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Allowance for credit losses:
(Reversal) provision for credit losses	$ 30	$ (45)
Balance, end of period	1,057	1,617
Conventional Loan [Member]
Allowance for credit losses:
Balance, beginning of period	1,208	1,674
Net (charge-offs) recoveries	(181)	(12)
(Reversal) provision for credit losses	30	(45)
Balance, end of period	$ 1,057	$ 1,617

Allowance For Credit Losses (Re

Allowance For Credit Losses (Recorded Investment by impairment Method) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Mar. 31, 2017
Allowance for credit losses, end of period:
Individually evaluated for impairment		$ 30	$ 0
Collectively evaluated for impairment		1,027	1,617
TOTAL ALLOWANCE FOR CREDIT LOSSES		1,057	1,617
Recorded investment, end of period:
Individually evaluated for impairment		27,044,554	25,877,321
Collectively evaluated for impairment		7,491,873	6,722,792
TOTAL RECORDED INVESTMENT		34,536,427	32,600,113
Single-family Residential Loans [Member] | Conventional Loan [Member]
Allowance for credit losses, end of period:
Individually evaluated for impairment		30	0
Collectively evaluated for impairment		1,027	1,617
TOTAL ALLOWANCE FOR CREDIT LOSSES		1,057	1,617
Recorded investment, end of period:
Individually evaluated for impairment		11,044	11,883
Collectively evaluated for impairment		6,768,397	6,056,998
TOTAL RECORDED INVESTMENT		6,779,441	6,068,881
Single-family Residential Loans [Member] | Government Loans [Member]
Allowance for credit losses, end of period:
Individually evaluated for impairment		0	0
Collectively evaluated for impairment		0	0
TOTAL ALLOWANCE FOR CREDIT LOSSES		0	0
Recorded investment, end of period:
Individually evaluated for impairment		0	0
Collectively evaluated for impairment		723,476	665,794
TOTAL RECORDED INVESTMENT		723,476	665,794
Credit Products [Member]
Allowance for credit losses, end of period:
Individually evaluated for impairment	[1]	0	0
Collectively evaluated for impairment	[1]	0	0
TOTAL ALLOWANCE FOR CREDIT LOSSES	[1]	0	0
Recorded investment, end of period:
Individually evaluated for impairment	[1]	27,019,326	25,848,675
Collectively evaluated for impairment	[1]	0	0
TOTAL RECORDED INVESTMENT	[1]	27,019,326	25,848,675
Direct Financing Lease Receivable [Member]
Allowance for credit losses, end of period:
Individually evaluated for impairment		0	0
Collectively evaluated for impairment		0	0
TOTAL ALLOWANCE FOR CREDIT LOSSES		0	0
Recorded investment, end of period:
Individually evaluated for impairment		14,184	16,763
Collectively evaluated for impairment		0	0
TOTAL RECORDED INVESTMENT		$ 14,184	$ 16,763
[1]	The recorded investment for credit products includes only advances. The recorded investment for all other credit products is insignificant.

Allowance For Credit Losses (58

Allowance For Credit Losses (Recorded Investment in Delinquent Mortgage Loans) (Details) - USD ($) $ in Thousands		Mar. 31, 2018		Dec. 31, 2017
Recorded investment:
Total past due		$ 87,073		$ 86,847
Total current loans		34,449,354		33,581,092
Total recorded investment		34,536,427		33,667,939
In process of foreclosure, included above (Mortgage Loans)	[1]	7,427		5,762
Past due 90 days or more and still accruing interest		5,551		6,273
Loans on non-accrual status		14,649	[2]	16,570	[3]
Troubled debt restructurings included in non-accrual loans		1,336		1,398
Past due 30-59 days delinquent [Member]
Recorded investment:
Total past due		58,593		55,381
Past due 60-89 days delinquent [Member]
Recorded investment:
Total past due		12,286		12,399
Past due 90 days or more delinquent [Member]
Recorded investment:
Total past due		$ 16,194		$ 19,067
Serious delinquency rate	[4]	0.00%		0.10%
Credit Products [Member]
Recorded investment:
Total past due	[5]	$ 0		$ 0
Total current loans	[5]	27,019,326		26,330,455
Total recorded investment	[5]	27,019,326		26,330,455
In process of foreclosure, included above	[1],[5]	0		0
Past due 90 days or more and still accruing interest	[5]	0		0
Loans on non-accrual status	[5]	0	[2]	0	[3]
Credit Products [Member] | Past due 30-59 days delinquent [Member]
Recorded investment:
Total past due	[5]	0		0
Credit Products [Member] | Past due 60-89 days delinquent [Member]
Recorded investment:
Total past due	[5]	0		0
Credit Products [Member] | Past due 90 days or more delinquent [Member]
Recorded investment:
Total past due	[5]	$ 0		$ 0
Serious delinquency rate	[4],[5]	0.00%		0.00%
Direct Financing Lease Receivable [Member]
Recorded investment:
Total past due		$ 0		$ 0
Total current loans		14,184		14,833
Total recorded investment		14,184		14,833
In process of foreclosure, included above	[1]	0		0
Past due 90 days or more and still accruing interest		0		0
Loans on non-accrual status		0	[2]	0	[3]
Direct Financing Lease Receivable [Member] | Past due 30-59 days delinquent [Member]
Recorded investment:
Total past due		0		0
Direct Financing Lease Receivable [Member] | Past due 60-89 days delinquent [Member]
Recorded investment:
Total past due		0		0
Direct Financing Lease Receivable [Member] | Past due 90 days or more delinquent [Member]
Recorded investment:
Total past due		$ 0		$ 0
Serious delinquency rate	[4]	0.00%		0.00%
Government Loans [Member] | Single-family Residential Loans [Member]
Recorded investment:
Total past due		$ 27,944		$ 28,549
Total current loans		695,532		682,833
Total recorded investment		723,476		711,382
In process of foreclosure, included above (Mortgage Loans)	[1]	2,409		1,595
Past due 90 days or more and still accruing interest		5,551		6,273
Loans on non-accrual status		0	[2]	0	[3]
Government Loans [Member] | Single-family Residential Loans [Member] | Past due 30-59 days delinquent [Member]
Recorded investment:
Total past due		17,393		17,775
Government Loans [Member] | Single-family Residential Loans [Member] | Past due 60-89 days delinquent [Member]
Recorded investment:
Total past due		5,000		4,501
Government Loans [Member] | Single-family Residential Loans [Member] | Past due 90 days or more delinquent [Member]
Recorded investment:
Total past due		$ 5,551		$ 6,273
Serious delinquency rate	[4]	0.80%		0.90%
Conventional Loan [Member] | Single-family Residential Loans [Member]
Recorded investment:
Total past due		$ 59,129		$ 58,298
Total current loans		6,720,312		6,552,971
Total recorded investment		6,779,441		6,611,269
In process of foreclosure, included above (Mortgage Loans)	[1]	5,018		4,167
Past due 90 days or more and still accruing interest		0		0
Loans on non-accrual status		14,649	[2]	16,570	[3]
Conventional Loan [Member] | Single-family Residential Loans [Member] | Past due 30-59 days delinquent [Member]
Recorded investment:
Total past due		41,200		37,606
Conventional Loan [Member] | Single-family Residential Loans [Member] | Past due 60-89 days delinquent [Member]
Recorded investment:
Total past due		7,286		7,898
Conventional Loan [Member] | Single-family Residential Loans [Member] | Past due 90 days or more delinquent [Member]
Recorded investment:
Total past due		$ 10,643		$ 12,794
Serious delinquency rate	[4]	0.20%		0.20%
[1]	Includes loans where the decision of foreclosure or similar alternative such as pursuit of deed-in-lieu has been reported. Loans in process of foreclosure are included in past due or current loans dependent on their delinquency status.
[2]	Loans on non-accrual status include $1,336,000 of troubled debt restructurings. Troubled debt restructurings are restructurings in which the FHLBank, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider.
[3]	Loans on non-accrual status include $1,398,000 of troubled debt restructurings. Troubled debt restructurings are restructurings in which the FHLBank, for economic or legal reasons related to the debtor’s financial difficulties, grants a concession to the debtor that it would not otherwise consider.
[4]	Loans that are 90 days or more past due or in the process of foreclosure expressed as a percentage of the total recorded investment for the portfolio class.
[5]	The recorded investment for credit products includes only advances. The recorded investment for all other credit products is insignificant.

Allowance For Credit Losses (In

Allowance For Credit Losses (Individually Evaluated Impaired Statistic By Product Class Level) (Details) - Conventional Loan [Member] - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Financing Receivable, Impaired [Line Items]
With no related allowance, Recorded Investment	$ 10,911	$ 10,925
With an allowance, Recorded Investment	133	134
TOTAL, Recorded Investment	11,044	11,059
With no related allowance, Unpaid Principal Balance	10,851	10,875
With an allowance, Unpaid Principal Balance	134	136
TOTAL, Unpaid Principal Balance	10,985	11,011
With an allowance, Related Allowance	$ 30	$ 39

Allowance For Credit Losses (Av

Allowance For Credit Losses (Average Recorded Investment of Individually Impaired Loan and Related Interest Income Recognized) (Details) - Conventional Loan [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Financing Receivable, Impaired [Line Items]
With no related allowance, Average Recorded Investment	$ 10,700	$ 11,652
With an allowance, Average Recorded Investment	133	0
TOTAL, Average Recorded Investment	10,833	11,652
With no related allowance, Interest Income Recognized	56	74
With an allowance, Interest Income Recognized	0	0
TOTAL, Interest Income Recognized	$ 56	$ 74

Derivatives And Hedging Activ61

Derivatives And Hedging Activities (Narrative) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Uncleared derivatives [Member] | Counterparty One [Member]
Derivative [Line Items]
Maximum credit risk applicable to a single counterparty	$ 33,116	$ 19,118

Derivatives And Hedging Activ62

Derivatives And Hedging Activities (Fair Values of Derivatives Instruments) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Derivatives, Fair Value [Line Items]
TOTAL, Notional Amount		$ 13,842,396	$ 13,170,168
TOTAL, Derivative Assets		116,769	60,486
TOTAL, Derivative Liabilities		42,606	41,686
Netting adjustments and cash collateral, Derivative Assets	[1],[2]	(75,824)	(23,456)
Netting adjustments and cash collateral, Derivative Liabilities	[1],[2]	(41,347)	(39,269)
DERIVATIVE ASSETS		40,945	37,030
DERIVATIVE LIABILITIES		1,259	2,417
Cash collateral posted		62,492	56,508
Cash collateral received		96,969	40,695
Derivatives designated as hedging instruments: [Member]
Derivatives, Fair Value [Line Items]
TOTAL, Notional Amount		7,775,702	7,219,084
TOTAL, Derivative Assets		93,981	56,159
TOTAL, Derivative Liabilities		21,190	19,971
Derivatives not designated as hedging instruments: [Member]
Derivatives, Fair Value [Line Items]
TOTAL, Notional Amount		6,066,694	5,951,084
TOTAL, Derivative Assets		22,788	4,327
TOTAL, Derivative Liabilities		21,416	21,715
Interest rate swaps [Member] | Derivatives designated as hedging instruments: [Member]
Derivatives, Fair Value [Line Items]
TOTAL, Notional Amount		7,775,702	7,219,084
TOTAL, Derivative Assets		93,981	56,159
TOTAL, Derivative Liabilities		21,190	19,971
Interest rate swaps [Member] | Derivatives not designated as hedging instruments: [Member]
Derivatives, Fair Value [Line Items]
TOTAL, Notional Amount		3,628,730	3,529,299
TOTAL, Derivative Assets		20,978	3,243
TOTAL, Derivative Liabilities		21,390	21,672
Interest rate caps/floors [Member] | Derivatives not designated as hedging instruments: [Member]
Derivatives, Fair Value [Line Items]
TOTAL, Notional Amount		2,304,200	2,344,200
TOTAL, Derivative Assets		1,527	1,011
TOTAL, Derivative Liabilities		0	0
Mortgage delivery commitments [Member] | Derivatives not designated as hedging instruments: [Member] | Mortgages [Member]
Derivatives, Fair Value [Line Items]
TOTAL, Notional Amount		133,764	77,585
TOTAL, Derivative Assets		283	73
TOTAL, Derivative Liabilities		$ 26	$ 43
[1]	Amounts represent the application of the netting requirements that allow the FHLBank to settle positive and negative positions cash collateral, including initial or certain variation margin, and related accrued interest held or placed with the same clearing agent and/or derivative counterparty. Cash collateral posted was $62,492,000 and $56,508,000 as of March 31, 2018 and December 31, 2017, respectively. Cash collateral received was $96,969,000 and $40,695,000 as of March 31, 2018 and December 31, 2017, respectively.
[2]	Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty.

Derivatives And Hedging Activ63

Derivatives And Hedging Activities (Net Gains Or Losses On Derivatives And Hedging Activities) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses) related to fair value hedge ineffectiveness		$ (1,974)	$ (1,330)
Total net gains (losses) related to derivatives not designated as hedging instruments		18,800	1,947
Other1	[1]	(183)	(14)
NET GAINS (LOSSES) ON DERIVATIVES AND HEDGING ACTIVITIES		16,643	603
Interest rate swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses) related to fair value hedge ineffectiveness		(1,974)	(1,330)
Economic Hedge [Member] | Interest rate swaps [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses) related to derivatives not designated as hedging instruments		21,258	8,248
Economic Hedge [Member] | Interest rate caps/floors [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses) related to derivatives not designated as hedging instruments		515	(1,608)
Economic Hedge [Member] | Net interest settlements [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses) related to derivatives not designated as hedging instruments		(1,690)	(5,183)
Mortgages [Member] | Mortgage delivery commitments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Total net gains (losses) related to derivatives not designated as hedging instruments		$ (1,283)	$ 490
[1]	Amount represents price alignment amount on derivatives for which variation margin is characterized as a daily settled contract.

Derivatives And Hedging Activ64

Derivatives And Hedging Activities (Effect of Fair Value Hedge-Related Derivative Instruments) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives		$ 69,498	$ 17,178
Gains (Losses) on Hedged Items		(71,472)	(18,508)
Net Fair Value Hedge Ineffectiveness		(1,974)	(1,330)
Effect of Derivatives on Net Interest Income1	[1]	(3,778)	(13,702)
Advances [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives		51,154	18,116
Gains (Losses) on Hedged Items		(53,954)	(18,228)
Net Fair Value Hedge Ineffectiveness		(2,800)	(112)
Effect of Derivatives on Net Interest Income1	[1]	(3,621)	(16,491)
Investments [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives		35,406	3,266
Gains (Losses) on Hedged Items		(35,028)	(3,813)
Net Fair Value Hedge Ineffectiveness		378	(547)
Effect of Derivatives on Net Interest Income1	[1]	(1,080)	(2,715)
Consolidated Obligations Bonds [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives		(17,062)	(4,220)
Gains (Losses) on Hedged Items		17,510	3,585
Net Fair Value Hedge Ineffectiveness		448	(635)
Effect of Derivatives on Net Interest Income1	[1]	923	5,519
Consolidated Obligations Discount Notes [Member]
Derivative Instruments, Gain (Loss) [Line Items]
Gains (Losses) on Derivatives		0	16
Gains (Losses) on Hedged Items		0	(52)
Net Fair Value Hedge Ineffectiveness		0	(36)
Effect of Derivatives on Net Interest Income1	[1]	$ 0	$ (15)
[1]	The differentials between accruals of interest receivables and payables on derivatives designated as fair value hedges as well as the amortization/accretion of hedging activities are recognized as adjustments to the interest income or expense of the designated underlying hedged item.

Deposits (Types Of Deposits) (D

Deposits (Types Of Deposits) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Interest-bearing:
Demand	$ 228,107	$ 246,831
Overnight	333,900	161,900
Total interest-bearing	562,007	408,731
Non-interest-bearing:
Demand	61,315	53,038
Total non-interest-bearing	61,315	53,038
TOTAL DEPOSITS	$ 623,322	$ 461,769

Consolidated Obligations (Narra

Consolidated Obligations (Narrative) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Par value	$ 27,249,290	$ 24,507,540
Federal Home Loan Bank, Consolidated Obligations, Callable Option [Member]
Debt Instrument [Line Items]
Par value	$ 7,042,000	$ 6,452,000

Consolidated Obligations (Conso

Consolidated Obligations (Consolidated Bond Obligations Outstanding By Contractual Maturity) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Due in one year or less	$ 9,064,190	$ 11,098,440
Due in one year or less, Weighted Average Interest Rate	1.67%	1.40%
Due after one year through two years	$ 10,168,650	$ 6,001,000
Due after one year through two years, Weighted Average Interest Rate	1.73%	1.46%
Due after two years through three years	$ 2,057,150	$ 1,240,300
Due after two years through three years, Weighted Average Interest Rate	1.80%	1.60%
Due after three years through four years	$ 982,800	$ 1,249,050
Due after three years through four years, Weighted Average Interest Rate	1.75%	1.66%
Due after four years through five years	$ 1,000,900	$ 865,650
Due after four years through five years, Weighted Average Interest Rate	1.97%	1.97%
Thereafter	$ 3,975,600	$ 4,053,100
Thereafter, Weighted Average Interest Rate	2.59%	2.57%
Total par value	$ 27,249,290	$ 24,507,540
Total par value, Weighted Average Interest Rate	1.85%	1.65%
Premium	$ 18,764	$ 19,795
Discounts	(3,441)	(2,843)
Concession fees	(9,993)	(9,753)
Hedging adjustments	(17,781)	(271)
TOTAL	$ 27,236,839	$ 24,514,468

Consolidated Obligations (Con68

Consolidated Obligations (Consolidated Bond Obligations By Contractual Maturity Or Next Call Date) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Instrument [Line Items]
Due in one year or less	$ 15,284,190	$ 17,243,440
Due after one year through two years	10,182,650	5,460,000
Due after two years through three years	787,150	830,300
Due after three years through four years	287,800	259,050
Due after four years through five years	260,900	280,650
Thereafter	446,600	434,100
Total par value	$ 27,249,290	$ 24,507,540

Consolidated Obligations (Con69

Consolidated Obligations (Consolidated Bonds By Interest-Rate Payment Type) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Simple variable rate	$ 14,690,000	$ 12,900,000
Fixed rate	11,549,290	10,597,540
Fixed to variable rate	535,000	535,000
Step	460,000	430,000
Range	15,000	45,000
Total par value	$ 27,249,290	$ 24,507,540

Consolidated Obligations (Con70

Consolidated Obligations (Consolidated Discount Notes Outstanding) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Debt Disclosure [Abstract]
Book Value		$ 22,606,383	$ 20,420,651
Par Value		$ 22,638,501	$ 20,445,225
Weighted Average Interest Rate	[1]	1.59%	1.23%
[1]	Represents yield to maturity excluding concession fees.

Assets and Liabilities Subjec71

Assets and Liabilities Subject to Offsetting Assets Subject to Offsetting (Schedule of Offsetting Assets) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Offsetting Assets [Line Items]
Derivative assets, Gross Amounts of Recognized Assets		$ 116,769	$ 60,486
Derivative assets, Gross Amounts Offset in the Statement of Condition	[1],[2]	(75,824)	(23,456)
Total derivative assets		40,945	37,030
Derivative assets, Gross Amounts Not Offset in the Statement of Condition	[3]	(3,110)	(73)
Derivative assets, Net Amount		37,835	36,957
Securities purchased under agreements to resell, Gross Amounts of Recognized Assets		3,206,045	3,161,446
Securities purchased under agreements to resell, Gross Amounts Offset in the Statement of Condition		0	0
Securities purchased under agreements to resell, Net Amounts of Assets Presented in the Statement of Condition		3,206,045	3,161,446
Securities purchased under agreements to resell, Gross Amounts Not Offset in the Statement of Condition	[3]	(3,206,045)	(3,161,446)
Securities purchased under agreements to resell, Net Amount		0	0
TOTAL, Gross Amounts of Recognized Assets		3,322,814	3,221,932
TOTAL, Gross Amounts Offset in the Statement of Condition		(75,824)	(23,456)
TOTAL, Net Amounts of Assets Presented in the Statement of Condition		3,246,990	3,198,476
TOTAL, Gross Amounts Not Offset in the Statement of Condition	[3]	(3,209,155)	(3,161,519)
TOTAL, Net Amount		37,835	36,957
Uncleared derivatives [Member]
Offsetting Assets [Line Items]
Derivative assets, Gross Amounts of Recognized Assets		115,961	54,164
Derivative assets, Gross Amounts Offset in the Statement of Condition		(109,864)	(52,330)
Total derivative assets		6,097	1,834
Derivative assets, Gross Amounts Not Offset in the Statement of Condition	[3]	(3,110)	(73)
Derivative assets, Net Amount		2,987	1,761
Cleared derivatives [Member]
Offsetting Assets [Line Items]
Derivative assets, Gross Amounts of Recognized Assets		808	6,322
Derivative assets, Gross Amounts Offset in the Statement of Condition		34,040	28,874
Total derivative assets		34,848	35,196
Derivative assets, Gross Amounts Not Offset in the Statement of Condition	[3]	0	0
Derivative assets, Net Amount		$ 34,848	$ 35,196
[1]	Amounts represent the application of the netting requirements that allow the FHLBank to settle positive and negative positions cash collateral, including initial or certain variation margin, and related accrued interest held or placed with the same clearing agent and/or derivative counterparty. Cash collateral posted was $62,492,000 and $56,508,000 as of March 31, 2018 and December 31, 2017, respectively. Cash collateral received was $96,969,000 and $40,695,000 as of March 31, 2018 and December 31, 2017, respectively.
[2]	Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty.
[3]	Represents noncash collateral received on financial instruments that: (1) do not qualify for netting on the Statement of Condition; or (2) are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments).

Assets and Liabilities Subjec72

Assets and Liabilities Subject to Offsetting Liabilities Subject to Offsetting (Schedule of Offsetting Liabilities) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Offsetting Liabilities [Line Items]
Derivative liabilities, Gross Amounts of Recognized Liabilities		$ 42,606	$ 41,686
Derivative liabilities, Gross Amounts Offset in the Statement of Condition	[1],[2]	(41,347)	(39,269)
Total derivative liabilities		1,259	2,417
Derivative liabilities, Gross Amounts Not Offset in the Statement of Condition	[3]	(26)	(43)
Derivative liabilities, Net Amount		1,233	2,374
TOTAL, Gross Amounts of Recognized Liabilities		42,606	41,686
TOTAL, Gross Amounts Offset in the Statement of Condition		(41,347)	(39,269)
TOTAL, Net Amounts of Liabilities Presented in the Statement of Condition		1,259	2,417
TOTAL, Gross Amounts Not Offset in the Statement of Condition	[3]	(26)	(43)
TOTAL, Net Amount		1,233	2,374
Uncleared derivatives [Member]
Offsetting Liabilities [Line Items]
Derivative liabilities, Gross Amounts of Recognized Liabilities		40,673	31,805
Derivative liabilities, Gross Amounts Offset in the Statement of Condition		(39,414)	(29,388)
Total derivative liabilities		1,259	2,417
Derivative liabilities, Gross Amounts Not Offset in the Statement of Condition	[3]	(26)	(43)
Derivative liabilities, Net Amount		1,233	2,374
Cleared derivatives [Member]
Offsetting Liabilities [Line Items]
Derivative liabilities, Gross Amounts of Recognized Liabilities		1,933	9,881
Derivative liabilities, Gross Amounts Offset in the Statement of Condition		(1,933)	(9,881)
Total derivative liabilities		0	0
Derivative liabilities, Gross Amounts Not Offset in the Statement of Condition	[3]	0	0
Derivative liabilities, Net Amount		$ 0	$ 0
[1]	Amounts represent the application of the netting requirements that allow the FHLBank to settle positive and negative positions cash collateral, including initial or certain variation margin, and related accrued interest held or placed with the same clearing agent and/or derivative counterparty. Cash collateral posted was $62,492,000 and $56,508,000 as of March 31, 2018 and December 31, 2017, respectively. Cash collateral received was $96,969,000 and $40,695,000 as of March 31, 2018 and December 31, 2017, respectively.
[2]	Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty.
[3]	Represents noncash collateral received on financial instruments that: (1) do not qualify for netting on the Statement of Condition; or (2) are not subject to an enforceable netting agreement (e.g., mortgage delivery commitments).

Capital (Narrative) (Details)

Capital (Narrative) (Details)		3 Months Ended
		Mar. 31, 2018$ / sharesRate	Dec. 31, 2017$ / sharesRate
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Number of Finance Agency Regulatory Capital Requirements		3
Total regulatory capital-to-asset ratio, required | Rate		4.00%	4.00%
Leverage capital ratio, required | Rate		5.00%	5.00%
Leverage capital, permanent capital weight		1.5
Common Stock, par value per share | $ / shares		$ 100
Excess Stock (less than) | Rate		1.00%
Class A [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Leverage capital, non-permanent capital weight		1
Minimum period after which redemption is required		6 months
Common Stock, par value per share | $ / shares	[1]	$ 100	$ 100
Class B [Member]
Compliance with Regulatory Capital Requirements under Banking Regulations [Line Items]
Minimum period after which redemption is required		5 years
Common Stock, par value per share | $ / shares	[1]	$ 100	$ 100
[1]	Putable

Capital (Regulatory Capital Req

Capital (Regulatory Capital Requirements) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Regulatory capital requirements:
Risk-based capital, Required	$ 487,274	$ 380,750
Risk-based capital, Actual	$ 2,289,753	$ 2,248,599
Total regulatory capital-to-asset ratio, Required	4.00%	4.00%
Total regulatory capital-to-asset ratio, Actual	4.60%	5.20%
Total regulatory capital, Required	$ 2,125,994	$ 1,923,064
Total regulatory capital, Actual	$ 2,458,006	$ 2,485,757
Leverage capital ratio, Required	5.00%	5.00%
Leverage capital ratio, Actual	6.80%	7.50%
Leverage capital, Required	$ 2,657,492	$ 2,403,830
Leverage capital, Actual	$ 3,602,883	$ 3,610,056

Capital (Mandatorily Redeemable

Capital (Mandatorily Redeemable Capital Stock Rollforward) (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Mandatorily Redeemable Capital Stock [Roll Forward]
Balance, beginning of period	$ 5,312	$ 2,670
Capital stock subject to mandatory redemption reclassified from equity during the period	100,390	173,395
Redemption or repurchase of mandatorily redeemable capital stock during the period	(100,734)	(173,814)
Stock dividend classified as mandatorily redeemable capital stock during the period	61	13
Balance, end of period	$ 5,029	$ 2,264

Capital (Mandatorily Redeemab76

Capital (Mandatorily Redeemable Capital Stock By Contractual Year Of Redemption) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017	Mar. 31, 2017	Dec. 31, 2016
Contractual Year of Repurchase
Year 1		$ 1	$ 1
Year 2		0	0
Year 3		0	0
Year 4		20	245
Year 5		3,039	3,039
Past contractual redemption date due to remaining activity	[1]	1,969	2,027
TOTAL		$ 5,029	$ 5,312	$ 2,264	$ 2,670
[1]	Represents mandatorily redeemable capital stock that is past the end of the contractual redemption period because there is activity outstanding to which the mandatorily redeemable capital stock relates.

Accumulated Other Comprehensi77

Accumulated Other Comprehensive Income (Accumulated Other Comprehensive Income Or Loss) (Details) - USD ($) $ in Thousands		3 Months Ended
		Mar. 31, 2018	Mar. 31, 2017
Accumulated Other Comprehensive Income [Roll Forward]
Balance at the beginning of the period		$ 2,506,103	$ 1,962,448
Reclassifications from other comprehensive income (loss) to net income:
Total other comprehensive income (loss)		4,450	8,951
Balance at the end of the period		2,483,085	2,129,429
Net Unrealized Gain (Loss) on Available-for-Sale Securities [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Balance at the beginning of the period		31,206	9,345
Other comprehensive income (loss) before reclassification:
Unrealized gains (losses)		4,142	8,485
Reclassifications from other comprehensive income (loss) to net income:
Total other comprehensive income (loss)		4,142	8,485
Balance at the end of the period		35,348	17,830
Defined Benefit Pension Plan [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Balance at the beginning of the period		(1,385)	(2,927)
Reclassifications from other comprehensive income (loss) to net income:
Amortization of net losses - defined benefit pension plan2	[1]	7	57
Total other comprehensive income (loss)		7	57
Balance at the end of the period		(1,378)	(2,870)
Total AOCI [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Balance at the beginning of the period		25,658	577
Other comprehensive income (loss) before reclassification:
Unrealized gains (losses)		4,142	8,485
Non-credit OTTI losses			(4)
Accretion of non-credit loss		279	376
Reclassifications from other comprehensive income (loss) to net income:
Non-credit OTTI to credit OTTI1	[2]	22	37
Amortization of net losses - defined benefit pension plan2	[1]	7	57
Total other comprehensive income (loss)		4,450	8,951
Balance at the end of the period		30,108	9,528
Held-to-maturity Securities [Member] | Net Non-credit Portion of OTTI Losses on Held-to-maturity Securities [Member]
Accumulated Other Comprehensive Income [Roll Forward]
Balance at the beginning of the period		(4,163)	(5,841)
Other comprehensive income (loss) before reclassification:
Non-credit OTTI losses			(4)
Accretion of non-credit loss		279	376
Reclassifications from other comprehensive income (loss) to net income:
Non-credit OTTI to credit OTTI1	[2]	22	37
Total other comprehensive income (loss)		301	409
Balance at the end of the period		$ (3,862)	$ (5,432)
[1]	Recorded in “Other” non-interest expense on the Statements of Income. Amount represents a debit (increase to other expenses).
[2]	Recorded in “Net other-than-temporary impairment losses on held-to-maturity securities” on the Statements of Income. Amount represents a debit (decrease to other income (loss)).

Fair Values (Fair Value Summary

Fair Values (Fair Value Summary) (Details) - USD ($) $ in Thousands		Mar. 31, 2018	Dec. 31, 2017
Assets:
Cash and due from banks		$ 25,333	$ 268,050
Trading securities		3,403,665	2,869,415
Available-for-sale securities		1,538,448	1,493,231
Held-to-maturity securities, Carrying Value	[1]	5,126,814	4,856,825
Held-to-maturity securities		5,126,008	4,856,996
Accrued interest receivable		96,742	85,547
Derivative assets		40,945	37,030
Netting adjustments and cash collateral, Derivative Assets	[2],[3]	(75,824)	(23,456)
Liabilities:
Accrued interest payable		74,485	56,116
Derivative liabilities		1,259	2,417
Netting adjustments and cash collateral, Derivative Liabilities	[2],[3]	(41,347)	(39,269)
Carrying Value [Member]
Assets:
Cash and due from banks		25,333	268,050
Interest-bearing deposits		880,799	442,682
Securities purchased under agreements to resell		3,206,045	3,161,446
Federal funds sold		4,282,000	1,175,000
Trading securities		3,403,665	2,869,415
Available-for-sale securities		1,538,448	1,493,231
Held-to-maturity securities, Carrying Value		5,126,814	4,856,825
Advances		26,978,350	26,295,849
Mortgage loans held for portfolio, net of allowance		7,465,604	7,286,397
Accrued interest receivable		96,742	85,547
Derivative assets		40,945	37,030
Liabilities:
Deposits		623,322	461,769
Mandatorily redeemable capital stock		5,029	5,312
Accrued interest payable		74,485	56,116
Derivative liabilities		1,259	2,417
Carrying Value [Member] | Industrial revenue bond [Member]
Other Asset (Liability):
Other asset (liability), asset		29,000	29,000
Carrying Value [Member] | Financing lease payable [Member]
Other Asset (Liability):
Other asset (liability), liability		(29,000)	(29,000)
Carrying Value [Member] | Standby letters of credit [Member]
Other Asset (Liability):
Other asset (liability), liability		(1,276)	(1,246)
Carrying Value [Member] | Standby bond purchase agreements [Member]
Other Asset (Liability):
Other asset (liability), asset		93	385
Carrying Value [Member] | Advance commitments [Member]
Other Asset (Liability):
Other asset (liability), liability		0	0
Carrying Value [Member] | Consolidated Obligation Discount Notes [Member]
Liabilities:
Consolidated obligation discount notes		22,606,383	20,420,651
Carrying Value [Member] | Consolidated Obligation Bonds [Member]
Liabilities:
Consolidated obligation bonds		27,236,839	24,514,468
Fair Value [Member]
Assets:
Cash and due from banks		25,333	268,050
Interest-bearing deposits		880,799	442,682
Securities purchased under agreements to resell		3,206,045	3,161,446
Federal funds sold		4,282,000	1,175,000
Trading securities		3,403,665	2,869,415
Available-for-sale securities		1,538,448	1,493,231
Held-to-maturity securities		5,126,008	4,856,996
Advances		26,980,265	26,306,432
Mortgage loans held for portfolio, net of allowance		7,441,731	7,400,508
Accrued interest receivable		96,742	85,547
Derivative assets		40,945	37,030
Liabilities:
Deposits		623,322	461,769
Mandatorily redeemable capital stock		5,029	5,312
Accrued interest payable		74,485	56,116
Derivative liabilities		1,259	2,417
Fair Value [Member] | Industrial revenue bond [Member]
Other Asset (Liability):
Other asset (liability), asset		26,585	27,137
Fair Value [Member] | Financing lease payable [Member]
Other Asset (Liability):
Other asset (liability), liability		(26,585)	(27,137)
Fair Value [Member] | Standby letters of credit [Member]
Other Asset (Liability):
Other asset (liability), liability		(1,276)	(1,246)
Fair Value [Member] | Standby bond purchase agreements [Member]
Other Asset (Liability):
Other asset (liability), asset		2,583	2,812
Fair Value [Member] | Advance commitments [Member]
Other Asset (Liability):
Other asset (liability), liability		(8,433)	(8,069)
Fair Value [Member] | Consolidated Obligation Discount Notes [Member]
Liabilities:
Consolidated obligation discount notes		22,605,003	20,419,168
Fair Value [Member] | Consolidated Obligation Bonds [Member]
Liabilities:
Consolidated obligation bonds		26,969,191	24,374,595
Level 1 [Member]
Assets:
Cash and due from banks		25,333	268,050
Interest-bearing deposits		0	0
Securities purchased under agreements to resell		0	0
Federal funds sold		0	0
Trading securities		0	0
Available-for-sale securities		0	0
Held-to-maturity securities		0	0
Advances		0	0
Mortgage loans held for portfolio, net of allowance		0	0
Accrued interest receivable		0	0
Derivative assets		0	0
Liabilities:
Deposits		0	0
Mandatorily redeemable capital stock		5,029	5,312
Accrued interest payable		0	0
Derivative liabilities		0	0
Level 1 [Member] | Industrial revenue bond [Member]
Other Asset (Liability):
Other asset (liability), asset		0	0
Level 1 [Member] | Financing lease payable [Member]
Other Asset (Liability):
Other asset (liability), liability		0	0
Level 1 [Member] | Standby letters of credit [Member]
Other Asset (Liability):
Other asset (liability), liability		0	0
Level 1 [Member] | Standby bond purchase agreements [Member]
Other Asset (Liability):
Other asset (liability), asset		0	0
Level 1 [Member] | Advance commitments [Member]
Other Asset (Liability):
Other asset (liability), liability		0	0
Level 1 [Member] | Consolidated Obligation Discount Notes [Member]
Liabilities:
Consolidated obligation discount notes		0	0
Level 1 [Member] | Consolidated Obligation Bonds [Member]
Liabilities:
Consolidated obligation bonds		0	0
Level 2 [Member]
Assets:
Cash and due from banks		0	0
Interest-bearing deposits		880,799	442,682
Securities purchased under agreements to resell		3,206,045	3,161,446
Federal funds sold		4,282,000	1,175,000
Trading securities		3,403,665	2,869,415
Available-for-sale securities		1,538,448	1,493,231
Held-to-maturity securities		4,964,816	4,690,582
Advances		26,980,265	26,306,432
Mortgage loans held for portfolio, net of allowance		7,439,485	7,398,878
Accrued interest receivable		96,742	85,547
Derivative assets		116,769	60,486
Liabilities:
Deposits		623,322	461,769
Mandatorily redeemable capital stock		0	0
Accrued interest payable		74,485	56,116
Derivative liabilities		42,606	41,686
Level 2 [Member] | Industrial revenue bond [Member]
Other Asset (Liability):
Other asset (liability), asset		26,585	27,137
Level 2 [Member] | Financing lease payable [Member]
Other Asset (Liability):
Other asset (liability), liability		(26,585)	(27,137)
Level 2 [Member] | Standby letters of credit [Member]
Other Asset (Liability):
Other asset (liability), liability		(1,276)	(1,246)
Level 2 [Member] | Standby bond purchase agreements [Member]
Other Asset (Liability):
Other asset (liability), asset		2,583	2,812
Level 2 [Member] | Advance commitments [Member]
Other Asset (Liability):
Other asset (liability), liability		(8,433)	(8,069)
Level 2 [Member] | Consolidated Obligation Discount Notes [Member]
Liabilities:
Consolidated obligation discount notes		22,605,003	20,419,168
Level 2 [Member] | Consolidated Obligation Bonds [Member]
Liabilities:
Consolidated obligation bonds		26,969,191	24,374,595
Level 3 [Member]
Assets:
Cash and due from banks		0	0
Interest-bearing deposits		0	0
Securities purchased under agreements to resell		0	0
Federal funds sold		0	0
Trading securities		0	0
Available-for-sale securities		0	0
Held-to-maturity securities		161,192	166,414
Advances		0	0
Mortgage loans held for portfolio, net of allowance		2,246	1,630
Accrued interest receivable		0	0
Derivative assets		0	0
Liabilities:
Deposits		0	0
Mandatorily redeemable capital stock		0	0
Accrued interest payable		0	0
Derivative liabilities		0	0
Level 3 [Member] | Industrial revenue bond [Member]
Other Asset (Liability):
Other asset (liability), asset		0	0
Level 3 [Member] | Financing lease payable [Member]
Other Asset (Liability):
Other asset (liability), liability		0	0
Level 3 [Member] | Standby letters of credit [Member]
Other Asset (Liability):
Other asset (liability), liability		0	0
Level 3 [Member] | Standby bond purchase agreements [Member]
Other Asset (Liability):
Other asset (liability), asset		0	0
Level 3 [Member] | Advance commitments [Member]
Other Asset (Liability):
Other asset (liability), liability		0	0
Level 3 [Member] | Consolidated Obligation Discount Notes [Member]
Liabilities:
Consolidated obligation discount notes		0	0
Level 3 [Member] | Consolidated Obligation Bonds [Member]
Liabilities:
Consolidated obligation bonds		$ 0	$ 0
[1]	Fair value: $5,126,008 and $4,856,996 as of March 31, 2018 and December 31, 2017, respectively.
[2]	Amounts represent the application of the netting requirements that allow the FHLBank to settle positive and negative positions cash collateral, including initial or certain variation margin, and related accrued interest held or placed with the same clearing agent and/or derivative counterparty. Cash collateral posted was $62,492,000 and $56,508,000 as of March 31, 2018 and December 31, 2017, respectively. Cash collateral received was $96,969,000 and $40,695,000 as of March 31, 2018 and December 31, 2017, respectively.
[3]	Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty.

Fair Values (Hierarchy Level fo

Fair Values (Hierarchy Level for Financial Assets And Liabilities - Recurring And Nonrecurring) (Details) - USD ($) $ in Thousands		Mar. 31, 2018		Dec. 31, 2017
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		$ 3,403,665		$ 2,869,415
Available-for-sale securities		1,538,448		1,493,231
Total derivative assets		40,945		37,030
Netting adjustments and cash collateral, Derivative Assets	[1],[2]	(75,824)		(23,456)
Total derivative liabilities		1,259		2,417
Netting adjustments and cash collateral, Derivative Liabilities	[1],[2]	(41,347)		(39,269)
Held-to-maturity securities		5,126,008		4,856,996
Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		1,299,865		584,984
GSE obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	[3]	1,194,194		1,353,083
U.S. obligation MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	[4]	554		580
GSE MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	[5]	909,052		930,768
Residential MBS [Member] | Private-label residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities		75,761		81,406
Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		3,403,665		2,869,415
Available-for-sale securities		1,538,448		1,493,231
Total derivative assets		116,769		60,486
Total derivative liabilities		42,606		41,686
Held-to-maturity securities		4,964,816		4,690,582
Mortgage loans held for portfolio		7,439,485		7,398,878
Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		0		0
Available-for-sale securities		0		0
Total derivative assets		0		0
Total derivative liabilities		0		0
Held-to-maturity securities		161,192		166,414
Mortgage loans held for portfolio		2,246		1,630
Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		3,403,665		2,869,415
Available-for-sale securities		1,538,448		1,493,231
Total derivative assets		40,945		37,030
Total derivative liabilities		1,259		2,417
Held-to-maturity securities		5,126,008		4,856,996
Mortgage loans held for portfolio		7,441,731		7,400,508
Recurring fair value measurements [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Netting adjustments and cash collateral, Derivative Assets	[2]	(75,824)		(23,456)
Netting adjustments and cash collateral, Derivative Liabilities	[2]	(41,347)		(39,269)
Recurring fair value measurements [Member] | Interest-rate related [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Netting adjustments and cash collateral, Derivative Assets	[2]	(75,824)		(23,456)
Netting adjustments and cash collateral, Derivative Liabilities	[2]	(41,347)		(39,269)
Recurring fair value measurements [Member] | Level 2 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		3,403,665		2,869,415
Available-for-sale securities		1,538,448		1,493,231
Total derivative assets		116,769		60,486
TOTAL FAIR VALUE MEASUREMENTS - ASSETS		5,058,882		4,423,132
Total derivative liabilities		42,606		41,686
TOTAL FAIR VALUE MEASUREMENTS - LIABILITIES		42,606		41,686
Recurring fair value measurements [Member] | Level 2 [Member] | Interest-rate related [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets		116,486		60,413
Total derivative liabilities		42,580		41,643
Recurring fair value measurements [Member] | Level 2 [Member] | Mortgage delivery commitments [Member] | Mortgages [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets		283		73
Total derivative liabilities		26		43
Recurring fair value measurements [Member] | Level 2 [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		1,299,865		584,984
Recurring fair value measurements [Member] | Level 2 [Member] | GSE obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	[6]	1,194,194		1,353,083
Recurring fair value measurements [Member] | Level 2 [Member] | U.S. obligation MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	[7]	554		580
Recurring fair value measurements [Member] | Level 2 [Member] | GSE MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	[8]	909,052		930,768
Available-for-sale securities	[9]	1,538,448		1,493,231
Recurring fair value measurements [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		3,403,665		2,869,415
Available-for-sale securities		1,538,448		1,493,231
Total derivative assets		40,945		37,030
TOTAL FAIR VALUE MEASUREMENTS - ASSETS		4,983,058		4,399,676
Total derivative liabilities		1,259		2,417
TOTAL FAIR VALUE MEASUREMENTS - LIABILITIES		1,259		2,417
Recurring fair value measurements [Member] | Fair Value [Member] | Interest-rate related [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets		40,662		36,957
Total derivative liabilities		1,233		2,374
Recurring fair value measurements [Member] | Fair Value [Member] | Mortgage delivery commitments [Member] | Mortgages [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Total derivative assets		283		73
Total derivative liabilities		26		43
Recurring fair value measurements [Member] | Fair Value [Member] | Certificates of Deposit [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities		1,299,865		584,984
Recurring fair value measurements [Member] | Fair Value [Member] | GSE obligations [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	[6]	1,194,194		1,353,083
Recurring fair value measurements [Member] | Fair Value [Member] | U.S. obligation MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	[7]	554		580
Recurring fair value measurements [Member] | Fair Value [Member] | GSE MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Trading securities	[8]	909,052		930,768
Available-for-sale securities	[9]	1,538,448		1,493,231
Nonrecurring fair value measurements - Assets: [Member] | Level 3 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TOTAL FAIR VALUE MEASUREMENTS - ASSETS		3,504	[10]	6,761	[11]
Mortgage loans held for portfolio		2,236	[10]	1,633	[11]
Real estate owned		1,268	[10]	1,031	[11]
Nonrecurring fair value measurements - Assets: [Member] | Level 3 [Member] | Residential MBS [Member] | Private-label residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	[11]			4,097
Nonrecurring fair value measurements - Assets: [Member] | Fair Value [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
TOTAL FAIR VALUE MEASUREMENTS - ASSETS		3,504	[10]	6,761	[11]
Mortgage loans held for portfolio		2,236	[10]	1,633	[11]
Real estate owned		$ 1,268	[10]	1,031	[11]
Nonrecurring fair value measurements - Assets: [Member] | Fair Value [Member] | Residential MBS [Member] | Private-label residential MBS [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Held-to-maturity securities	[11]			$ 4,097
[1]	Amounts represent the application of the netting requirements that allow the FHLBank to settle positive and negative positions cash collateral, including initial or certain variation margin, and related accrued interest held or placed with the same clearing agent and/or derivative counterparty. Cash collateral posted was $62,492,000 and $56,508,000 as of March 31, 2018 and December 31, 2017, respectively. Cash collateral received was $96,969,000 and $40,695,000 as of March 31, 2018 and December 31, 2017, respectively.
[2]	Represents the effect of legally enforceable master netting agreements that allow the FHLBank to net settle positive and negative positions and also derivative cash collateral and related accrued interest held or placed with the same clearing agent or derivative counterparty.
[3]	Represents debentures issued by other FHLBanks, Federal National Mortgage Association (Fannie Mae), Federal Farm Credit Bank (Farm Credit) and Federal Agricultural Mortgage Corporation (Farmer Mac). GSE securities are not guaranteed by the U.S. government.
[4]	Represents single-family MBS issued by Government National Mortgage Association (Ginnie Mae), which are guaranteed by the U.S. government.
[5]	Represents single-family and multi-family MBS issued by Fannie Mae and Federal Home Loan Mortgage Corporation (Freddie Mac).
[6]	Represents debentures issued by other FHLBanks, Fannie Mae, Farm Credit and Farmer Mac.
[7]	Represents single-family MBS issued by Ginnie Mae.
[8]	Represents single-family and multi-family MBS issued by Fannie Mae and Freddie Mac.
[9]	Represents multi-family MBS issued by Fannie Mae.
[10]	Includes assets adjusted to fair value during the three months ended March 31, 2018 and still outstanding as of March 31, 2018.
[11]	Includes assets adjusted to fair value during the year ended December 31, 2017 and still outstanding as of December 31, 2017.

Commitments And Contingencies80

Commitments And Contingencies (Narrative) (Details)	3 Months Ended
	Mar. 31, 2018USD ($)Rate	Dec. 31, 2017USD ($)
Off-balance Sheet Commitments:
Obligation with Joint and Several Liability Arrangement, Description	As provided in the Federal Home Loan Bank Act of 1932, as amended (Bank Act) or in FHFA regulations, consolidated obligations are backed only by the financial resources of the FHLBanks. FHLBank Topeka is jointly and severally liable with the other FHLBanks for the payment of principal and interest on all of the consolidated obligations issued by the FHLBanks.
Obligation with joint and several liability arrangement, off balance sheet amount	$ 969,341,696,000	$ 989,306,996,000
Carrying value included in other liabilities	$ 74,087,000	$ 66,764,000
Number of in-district state housing authorities with standby bond purchase agreements	2	2
Mortgage Delivery Commitments Derivative Asset (Liability)	$ 257,000	$ 30,000
Other Commitments Other Assets:
Other assets	56,365,000	57,463,000
Standby Letters of Credit Outstanding [Member]
Off-balance Sheet Commitments:
Carrying value included in other liabilities	$ 1,276,000	$ 1,246,000
Commitment Expiration Year (no later than)	2,023
Term (up to)	P10Y
Forward Settling Advance Commitments [Member]
Off-balance Sheet Commitments:
Term (up to)	P24M
Commitments for standby bond purchases [Member]
Off-balance Sheet Commitments:
Commitment Expiration Year (no later than)	2,021
Mortgages [Member] | Commitments to fund or purchase mortgage loans [Member]
Off-balance Sheet Commitments:
Term (up to)	P60D
Shawnee County Financing Lease Agreement [Member]
Other Commitments Other Liabilities:
Debt Instrument, Issuance Date	Jun. 28, 2017
Debt Instrument, Issuer	Shawnee County, Kansas
Debt Instrument, Face Amount	$ 36,000,000
Debt Instrument, Maturity Date	Dec. 31, 2027
Debt Instrument, original term	127 months
Debt Instrument, Interest Rate, Stated Percentage | Rate	2.00%
Debt Instrument, Frequency of Periodic Payment	annual
Debt Instrument, Date of First Required Payment	Dec. 1, 2018
Shawnee County Industrial Revenue Bond [Member]
Other Commitments Other Assets:
Industrial Revenue Bonds Instrument, Issuance Date	Jun. 28, 2017
Industrial Revenue Bonds Instrument, Issuer	Shawnee County, Kansas
Industrial Revenue Bonds Instrument, Face Amount	$ 36,000,000
Industrial Revenue Bonds Instrument, Maturity Date	Dec. 31, 2027
Industrial Revenue Bonds Instrument, Term	127 months
Headquarters Property Tax Savings Term	10 years
Industrial Revenue Bonds Instrument, Interest Rate, Stated Percentage | Rate	2.00%
Industrial Revenue Bonds Instrument, Frequency of Periodic Payment	annual
Industrial Revenue Bonds Instrument, Receipt Date of First Required Payment	Dec. 1, 2018
Other Assets [Member] | Shawnee County Industrial Revenue Bond [Member]
Other Commitments Other Assets:
Other assets	$ 29,000,000
Other Liabilities [Member] | Shawnee County Financing Lease Agreement [Member]
Other Commitments Other Liabilities:
Other Borrowings	$ 29,000,000

Commitments And Contingencies81

Commitments And Contingencies (Off-Balance Sheet Commitments) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Standby letters of credit outstanding [Member]
Loss Contingencies [Line Items]
Expire Within One Year	$ 3,844,830	$ 3,410,258
Expire After One Year	45,377	7,238
Total	3,890,207	3,417,496
Advance commitments outstanding [Member]
Loss Contingencies [Line Items]
Expire Within One Year	41,500	70,025
Expire After One Year	99,230	99,475
Total	140,730	169,500
Commitments for standby bond purchases [Member]
Loss Contingencies [Line Items]
Expire Within One Year	442,451	354,410
Expire After One Year	389,114	543,967
Total	831,565	898,377
Commitments to issue consolidated bonds, at par [Member]
Loss Contingencies [Line Items]
Expire Within One Year	1,000	5,000
Expire After One Year	0	0
Total	1,000	5,000
Commitments to issue consolidated obligations discount notes, at par [Member]
Loss Contingencies [Line Items]
Expire Within One Year	800,000	0
Expire After One Year	0	0
Total	800,000	0
Mortgages [Member] | Commitments to fund or purchase mortgage loans [Member]
Loss Contingencies [Line Items]
Expire Within One Year	133,764	77,585
Expire After One Year	0	0
Total	$ 133,764	$ 77,585

Transactions With Stockholder82

Transactions With Stockholders (Related Party Transactions, by Balance Sheet Grouping) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Outstanding Advances	$ 26,978,350	$ 26,295,849
Outstanding Deposits	623,322	461,769
Ten Percent Owner [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 727,623	$ 704,184
Regulatory Capital Stock, Percent Of Total	45.30%	42.80%
Outstanding Advances	$ 12,900,000	$ 12,375,000
Outstanding Advances, Percent of Total	47.70%	47.10%
Outstanding Deposits	$ 24,053	$ 21,014
Outstanding Deposits, Percent of Total	3.90%	4.70%
Ten Percent Owner [Member] | Total Class A Stock [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 1,500	$ 28,450
Regulatory Capital Stock, Percent Of Total	0.90%	12.00%
Ten Percent Owner [Member] | Total Class B Stock [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 726,123	$ 675,734
Regulatory Capital Stock, Percent Of Total	50.60%	48.00%
BOKF, N.A. [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 297,374	$ 279,200
Regulatory Capital Stock, Percent Of Total	18.50%	17.00%
Outstanding Advances	$ 5,700,000	$ 5,100,000
Outstanding Advances, Percent of Total	21.10%	19.40%
Outstanding Deposits	$ 23,544	$ 20,486
Outstanding Deposits, Percent of Total	3.80%	4.50%
BOKF, N.A. [Member] | Total Class A Stock [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 500	$ 27,450
Regulatory Capital Stock, Percent Of Total	0.30%	11.60%
BOKF, N.A. [Member] | Total Class B Stock [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 296,874	$ 251,750
Regulatory Capital Stock, Percent Of Total	20.70%	17.90%
MidFirst Bank [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 234,623	$ 229,514
Regulatory Capital Stock, Percent Of Total	14.60%	13.90%
Outstanding Advances	$ 5,025,000	$ 5,100,000
Outstanding Advances, Percent of Total	18.60%	19.40%
Outstanding Deposits	$ 248	$ 266
Outstanding Deposits, Percent of Total	0.00%	0.10%
MidFirst Bank [Member] | Total Class A Stock [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 500	$ 500
Regulatory Capital Stock, Percent Of Total	0.30%	0.20%
MidFirst Bank [Member] | Total Class B Stock [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 234,123	$ 229,014
Regulatory Capital Stock, Percent Of Total	16.30%	16.30%
Capitol Federal Savings Bank [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 195,626	$ 195,470
Regulatory Capital Stock, Percent Of Total	12.20%	11.90%
Outstanding Advances	$ 2,175,000	$ 2,175,000
Outstanding Advances, Percent of Total	8.00%	8.30%
Outstanding Deposits	$ 261	$ 262
Outstanding Deposits, Percent of Total	0.10%	0.10%
Capitol Federal Savings Bank [Member] | Total Class A Stock [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 500	$ 500
Regulatory Capital Stock, Percent Of Total	0.30%	0.20%
Capitol Federal Savings Bank [Member] | Total Class B Stock [Member]
Related Party Transaction [Line Items]
Regulatory Capital Stock, Total Par Value	$ 195,126	$ 194,970
Regulatory Capital Stock, Percent Of Total	13.60%	13.80%

Transactions With Stockholder83

Transactions With Stockholders (Related Party Transactions, by Balance Sheet Grouping-Directors) (Details) - USD ($) $ in Thousands	Mar. 31, 2018	Dec. 31, 2017
Related Party Transaction [Line Items]
Advances, Outstanding Amount	$ 26,978,350	$ 26,295,849
Deposits, Outstanding Amount	623,322	461,769
Director [Member]
Related Party Transaction [Line Items]
TOTAL CAPITAL STOCK, Outstanding Amount	$ 12,072	$ 12,522
TOTAL CAPITAL STOCK, Percent Of Total	0.80%	0.80%
Advances, Outstanding Amount	$ 138,295	$ 168,017
Advances, Percent of Total	0.50%	0.60%
Deposits, Outstanding Amount	$ 11,877	$ 9,138
Deposits, Percent of Total	1.90%	2.00%
Director [Member] | Class A [Member]
Related Party Transaction [Line Items]
TOTAL CAPITAL STOCK, Outstanding Amount	$ 3,915	$ 4,829
TOTAL CAPITAL STOCK, Percent Of Total	2.30%	2.00%
Director [Member] | Class B [Member]
Related Party Transaction [Line Items]
TOTAL CAPITAL STOCK, Outstanding Amount	$ 8,157	$ 7,693
TOTAL CAPITAL STOCK, Percent Of Total	0.60%	0.50%

Transactions With Stockholder84

Transactions With Stockholders (Schedule Of Related Party Transactions, Mortgage Loans Disclosure) (Details) - Director [Member] - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Related Party Transaction [Line Items]
Mortgage loans acquired	$ 20,766	$ 28,866
Mortgage loans acquired, Percent of Total	5.40%	10.00%