Federal Home Loan Mortgage (FMCC) 10-Q 3 Nov 15 2015 Q3 Quarterly report Financial data

Document and Entity Information

Document and Entity Information - shares	9 Months Ended
	Sep. 30, 2015	Oct. 21, 2015
Document and Entity Information [Abstract]
Entity Registrant Name	FEDERAL HOME LOAN MORTGAGE CORP
Entity Central Index Key	1,026,214
Current Fiscal Year End Date	--12-31
Entity Filer Category	Large Accelerated Filer
Document Type	10-Q
Document Period End Date	Sep. 30, 2015
Document Fiscal Year Focus	2,015
Document Fiscal Period Focus	Q3
Amendment Flag	false
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
Entity Current Reporting Status	Yes
Entity Common Stock, Shares Outstanding		650,045,962

Condensed Consolidated Statemen

Condensed Consolidated Statements of Comprehensive Income - USD ($) shares in Millions, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Interest income
Total mortgage loans	$ 15,595	$ 15,791	$ 46,433	$ 47,846
Investments in securities	1,145	1,423	3,736	4,457
Other	19	8	45	19
Total interest income	16,759	17,222	50,214	52,322
Interest expense
Total interest expense	(12,963)	(13,484)	(38,679)	(41,416)
Expense related to derivatives	(53)	(75)	(176)	(230)
Net interest income	3,743	3,663	11,359	10,676
Benefit (provision) for credit losses	528	(574)	1,884	(41)
Net interest income after benefit (provision) for credit losses	4,271	3,089	13,243	10,635
Non-interest income (loss)
Derivative gains (losses)	(4,172)	(617)	(3,440)	(4,894)
Impairment of available-for-sale securities:
Total other-than-temporary impairment of available-for-sale securities	(38)	(132)	(204)	(641)
Portion of other-than-temporary impairment recognized in AOCI	(16)	(34)	(41)	(46)
Net impairment of available-for-sale securities recognized in earnings	(54)	(166)	(245)	(687)
Other gains (losses) on investment securities recognized in earnings	256	(109)	825	1,029
Other income (loss)	125	1,796	(432)	7,329
Non-interest income (loss)	(3,841)	764	(3,447)	2,469
Non-interest expense
Salaries and employee benefits	(231)	(231)	(742)	(687)
Professional services	(130)	(128)	(361)	(392)
Occupancy expense	(14)	(16)	(40)	(43)
Other administrative expense	(90)	(97)	(274)	(271)
Total administrative expense	(465)	(472)	(1,417)	(1,393)
Real estate owned operations expense	(116)	(103)	(243)	(112)
Temporary Payroll Tax Cut Continuation Act of 2011 expense	(248)	(198)	(705)	(563)
Other expense	(270)	(43)	(1,234)	(199)
Non-interest expense	(1,099)	(816)	(3,599)	(2,267)
Income (loss) before income tax benefit (expense)	(669)	3,037	6,197	10,837
Income tax benefit (expense)	194	(956)	(1,979)	(3,374)
Net income (loss)	(475)	2,081	4,218	7,463
Other comprehensive income (loss), net of taxes and reclassification adjustments:
Changes in unrealized gains (losses) related to available-for-sale securities	(61)	656	(218)	1,562
Changes in unrealized gains (losses) related to cash flow hedge relationships	35	50	132	151
Changes in defined benefit plans	0	(1)	26	(1)
Total other comprehensive income (loss), net of taxes and reclassification adjustments	(26)	705	(60)	1,712
Comprehensive income (loss)	(501)	2,786	4,158	9,175
Net income (loss)	(475)	2,081	4,218	7,463
Undistributed net worth sweep and senior preferred stock dividends	0	(2,786)	(4,659)	(9,175)
Net income (loss) attributable to common stockholders	$ (475)	$ (705)	$ (441)	$ (1,712)
Net income (loss) per common share — basic and diluted	$ (0.15)	$ (0.22)	$ (0.14)	$ (0.53)
Weighted average common shares outstanding (in millions) — basic and diluted	3,234	3,236	3,235	3,236
Variable Interest Entity Primary Beneficiary
Interest income
Total mortgage loans	$ 14,032	$ 14,148	$ 41,641	$ 42,881
Interest expense
Total interest expense	(11,364)	(11,802)	(33,856)	(36,150)
Non-interest income (loss)
Gains (losses) on extinguishment of debt securities of consolidated trusts and other debt	(5)	(132)	(139)	(308)
Freddie Mac parent
Interest income
Total mortgage loans	1,563	1,643	4,792	4,965
Interest expense
Interest expense, short-term debt	(40)	(35)	(114)	(110)
Interest expense, long-term debt	(1,559)	(1,647)	(4,709)	(5,156)
Non-interest income (loss)
Gains (losses) on extinguishment of debt securities of consolidated trusts and other debt	$ 9	$ (8)	$ (16)	$ 0

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents (includes $0 and $2, respectively, related to our consolidated VIEs)	$ 5,000	$ 10,928
Restricted cash and cash equivalents (includes $15,104 and $8,532, respectively, related to our consolidated VIEs)	15,108	8,535
Federal funds sold and securities purchased under agreements to resell (includes $11,815 and $13,500, respectively, related to our consolidated VIEs)	38,738	51,903
Investments in securities:
Available-for-sale, at fair value (includes $0 and $9, respectively, pledged as collateral that may be repledged)	81,573	106,550
Trading, at fair value (includes $2,455 and $1,884, respectively, pledged as collateral that may be repledged)	35,806	30,437
Total investments in securities	117,379	136,987
Held-for-investment, at amortized cost:
Total held-for-investment mortgage loans, net	1,722,014	1,688,212
Held-for-sale, at lower-of-cost-or-fair-value (includes $20,880 and $12,130 at fair value, respectively)	27,853	12,368
Total mortgage loans, net	1,749,867	1,700,580
Accrued interest receivable (includes $5,242 and $5,124, respectively, related to our consolidated VIEs)	6,052	6,034
Derivative assets, net	605	822
Real estate owned, net (includes $34 and $44, respectively, related to our consolidated VIEs)	1,795	2,558
Deferred tax assets, net	17,817	19,498
Other assets (Note 19) (includes $2,810 and $2,596, respectively, related to our consolidated VIEs)	9,786	7,694
Total assets	1,962,147	1,945,539
Liabilities
Accrued interest payable (includes $4,743 and $4,702, respectively, related to our consolidated VIEs)	6,135	6,325
Debt, net:
Total debt, net	1,947,389	1,929,542
Derivative liabilities, net	1,670	1,963
Other liabilities (Note 19) (includes $15 and $1, respectively, related to our consolidated VIEs)	5,654	5,058
Total liabilities	$ 1,960,848	$ 1,942,888
Commitments and contingencies (Notes 9, 14, and 17)
Equity
Senior preferred stock, at redemption value	$ 72,336	$ 72,336
Preferred stock, at redemption value	14,109	14,109
Common stock, $0.00 par value, 4,000,000,000 shares authorized, 725,863,886 shares issued and 650,045,962 shares and 650,043,899 shares outstanding, respectively	0	0
Additional paid-in capital	0	0
Retained earnings (accumulated deficit)	(82,931)	(81,639)
AOCI, net of taxes, related to:
Available-for-sale securities (includes $813 and $839, respectively, related to net unrealized gains on securities for which other-than-temporary impairment has been recognized in earnings)	2,328	2,546
Cash flow hedge relationships	(671)	(803)
Defined benefit plans	13	(13)
Total AOCI, net of taxes	1,670	1,730
Treasury stock, at cost, 75,817,924 shares and 75,819,987 shares, respectively	(3,885)	(3,885)
Total equity (See NOTE 11: STOCKHOLDERS’ EQUITY for information on our dividend obligation to Treasury)	1,299	2,651
Total liabilities and equity	1,962,147	1,945,539
Variable Interest Entity Primary Beneficiary
Assets
Cash and cash equivalents (includes $0 and $2, respectively, related to our consolidated VIEs)	0	2
Restricted cash and cash equivalents (includes $15,104 and $8,532, respectively, related to our consolidated VIEs)	15,104	8,532
Federal funds sold and securities purchased under agreements to resell (includes $11,815 and $13,500, respectively, related to our consolidated VIEs)	11,815	13,500
Held-for-investment, at amortized cost:
Total held-for-investment mortgage loans, net	1,615,291	1,558,094
Held-for-sale, at lower-of-cost-or-fair-value (includes $20,880 and $12,130 at fair value, respectively)	0	0
Total mortgage loans, net	1,615,291	1,558,094
Accrued interest receivable (includes $5,242 and $5,124, respectively, related to our consolidated VIEs)	5,242	5,124
Real estate owned, net (includes $34 and $44, respectively, related to our consolidated VIEs)	34	44
Other assets (Note 19) (includes $2,810 and $2,596, respectively, related to our consolidated VIEs)	2,810	2,596
Liabilities
Accrued interest payable (includes $4,743 and $4,702, respectively, related to our consolidated VIEs)	4,743	4,702
Debt, net:
Total debt, net	1,539,108	1,479,473
Other liabilities (Note 19) (includes $15 and $1, respectively, related to our consolidated VIEs)	15	1
Freddie Mac parent
Held-for-investment, at amortized cost:
Total held-for-investment mortgage loans, net	106,723	130,118
Held-for-sale, at lower-of-cost-or-fair-value (includes $20,880 and $12,130 at fair value, respectively)	27,853	12,368
Total mortgage loans, net	134,576	142,486
Debt, net:
Total debt, net	$ 408,281	$ 450,069

Condensed Consolidated Balance4

Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Assets
Cash and cash equivalents related to consolidated VIEs	$ 5,000	$ 10,928
Restricted cash and cash equivalents related to consolidated VIEs	15,108	8,535
Federal funds sold and securities purchased under agreements to resell related to consolidated VIEs	38,738	51,903
Investments in securities:
Available-for-sale securities pledged as collateral that may be repledged	0	9
Trading securities pledged as collateral that may be repledged	2,455	1,884
Mortgage loans:
Allowance for loan losses, held-for-investment mortgage loans	16,419	21,761
Mortgage loans, held for sale, at fair value	20,880	12,130
Accrued interest receivable related to consolidated VIEs	6,052	6,034
Real estate owned, net related to consolidated VIEs	1,795	2,558
Other assets related to consolidated VIEs	9,786	7,694
Liabilities
Accrued interest payable related to consolidated VIEs	6,135	6,325
Other liabilities related to consolidated VIEs	$ 5,654	$ 5,058
Equity
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	4,000,000,000	4,000,000,000
Common stock, shares issued	725,863,886	725,863,886
Common stock, shares outstanding	650,045,962	650,043,899
AOCI, net of taxes, related to:
Available for sale securities other-than-temporary impairment adjustment, related to net unrealized gains(losses) on securities for which other-than-temporary impairment has been recognized in earnings	$ 813	$ 839
Treasury stock, shares	75,817,924	75,819,987
Variable Interest Entity Primary Beneficiary
Assets
Cash and cash equivalents related to consolidated VIEs	$ 0	$ 2
Restricted cash and cash equivalents related to consolidated VIEs	15,104	8,532
Federal funds sold and securities purchased under agreements to resell related to consolidated VIEs	11,815	13,500
Mortgage loans:
Allowance for loan losses, held-for-investment mortgage loans	3,051	2,884
Accrued interest receivable related to consolidated VIEs	5,242	5,124
Real estate owned, net related to consolidated VIEs	34	44
Other assets related to consolidated VIEs	2,810	2,596
Liabilities
Accrued interest payable related to consolidated VIEs	4,743	4,702
Debt securities recorded at fair value	131	42
Other liabilities related to consolidated VIEs	15	1
Freddie Mac parent
Mortgage loans:
Allowance for loan losses, held-for-investment mortgage loans	13,368	18,877
Liabilities
Debt securities recorded at fair value	$ 7,379	$ 5,820

Condensed Consolidated Stateme5

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Net cash (used in) provided by operating activities	$ (5,443)	$ 11,314
Cash flows from investing activities:
Purchases of trading securities	(33,987)	(33,076)
Proceeds from sales of trading securities	12,851	13,674
Proceeds from maturities of trading securities	15,585	13,490
Purchases of available-for-sale securities	(5,025)	(22,080)
Proceeds from sales of available-for-sale securities	16,364	26,608
Proceeds from maturities of available-for-sale securities	16,099	15,742
Purchases of held-for-investment mortgage loans	(92,535)	(51,583)
Proceeds from sales of mortgage loans held-for-investment	1,647	454
Repayments of mortgage loans held-for-investment	233,586	175,728
(Increase) decrease in restricted cash	(6,573)	6,001
Net proceeds from dispositions of real estate owned and other recoveries	2,990	6,357
Net decrease in federal funds sold and securities purchased under agreements to resell	13,165	32,427
Derivative premiums and terminations and swap collateral, net	(1,888)	(1,262)
Changes in other assets	(8,634)	(67)
Net cash provided by investing activities	163,645	182,413
Cash flows from financing activities:
Payment of cash dividends on senior preferred stock	(5,510)	(16,824)
Changes in other liabilities	(3)	(5)
Net cash used in financing activities	(164,130)	(188,817)
Net (decrease) in cash and cash equivalents	(5,928)	4,910
Cash and cash equivalents at beginning of period	10,928	11,281
Cash and cash equivalents at end of period	5,000	16,191
Cash paid (received) for:
Debt interest	45,839	46,697
Income taxes	910	760
Parent Company [Member]
Cash flows from financing activities:
Proceeds from issuance of debt	437,415	342,957
Repayments of debt	(479,494)	(414,285)
Variable Interest Entity Primary Beneficiary Member
Cash flows from financing activities:
Proceeds from issuance of debt	129,086	93,823
Repayments of debt	(245,624)	$ (194,483)
Cash and cash equivalents at beginning of period	2
Cash and cash equivalents at end of period	$ 0

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES	NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES Freddie Mac is a GSE chartered by Congress in 1970. Our public mission is to provide liquidity, stability, and affordability to the U.S. housing market. We are regulated by FHFA, the SEC, HUD, the CFPB and Treasury, and are currently operating under the conservatorship of FHFA. For more information on the roles of FHFA and Treasury, see “NOTE 2: CONSERVATORSHIP AND RELATED MATTERS” in this Form 10-Q and in our Annual Report on Form 10-K for the year ended December 31, 2014, or our 2014 Annual Report. The accompanying unaudited condensed consolidated financial statements should be read in conjunction with the audited consolidated financial statements and accompanying notes in our 2014 Annual Report. We perform our mission by participating in the secondary mortgage market. Our participation in the secondary mortgage market includes providing our credit guarantee for mortgage loans originated by mortgage lenders in the primary mortgage market and investing in mortgage loans and mortgage-related securities. We do not participate directly in the primary mortgage market. We have three reportable segments, which are based on the type of business activities each performs — Single-family Guarantee, Investments, and Multifamily. See “NOTE 13: SEGMENT REPORTING” in our 2014 Annual Report for additional information. Our primary business objectives are: • to support U.S. homeowning and renting families by maintaining mortgage availability even when other sources of financing are scarce and providing struggling homeowners with alternatives that allow them to stay in their homes or to avoid foreclosure; • to reduce taxpayer exposure to losses by increasing the role of private capital in the mortgage market and reducing our overall risk profile; • to build a commercially strong and efficient business enterprise to succeed in a to-be-determined “future state;” and • to support and improve the secondary mortgage market. For information regarding our objectives, see “NOTE 2: CONSERVATORSHIP AND RELATED MATTERS — Business Objectives” in our 2014 Annual Report. Throughout our condensed consolidated financial statements and accompanying notes, we use certain acronyms and terms which are defined in the “GLOSSARY.” Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information and include our accounts as well as the accounts of other entities in which we have a controlling financial interest. All intercompany balances and transactions have been eliminated. We are operating under the basis that we will realize assets and satisfy liabilities in the normal course of business as a going concern and in accordance with the delegation of authority from FHFA to the Board of Directors and management. Certain financial statement information that is normally included in annual financial statements prepared in conformity with GAAP, but is not required for interim reporting purposes, has been condensed or omitted. Certain amounts in prior periods’ consolidated financial statements have been reclassified to conform to the current presentation. In the opinion of management, all adjustments, which include only normal recurring adjustments, have been recorded for a fair presentation of our unaudited condensed consolidated financial statements. Use of Estimates The preparation of financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses and gains and losses during the reporting period. Management has made significant estimates in preparing the financial statements for establishing the allowance for loan losses and reserve for guarantee losses, valuing financial instruments and other assets and liabilities, and assessing impairments on investments. Actual results could be different from these estimates. Change in Estimate Adoption of Regulatory Guidance on Determining when a Loan is Uncollectible On January 1, 2015, we adopted regulatory guidance issued by FHFA that establishes guidelines for adverse classification and identification of specified single-family and multifamily assets and off-balance sheet credit exposures, including guidelines for recognizing charge-offs on certain single-family loans. We analyze loans for collectability based on several factors, including, but not limited to: (a) servicing actions that indicate the potential for near-term loss mitigation, such as whether we have achieved quality borrower contact; (b) credit risk factors, such as whether the loan is in a state with foreclosure practices that prevent timely resolution of delinquencies; and (c) loan characteristics that indicate whether repayment is likely to occur, such as the borrower's payment history, loan status, and historical performance of loans with similar characteristics. Upon adoption of the FHFA regulatory guidance on January 1, 2015, we changed the timing of when we deem certain single-family loans to be uncollectible, and we began to charge-off the amount of recorded investment in excess of the fair value of the underlying collateral for mortgage loans that have been deemed uncollectible prior to foreclosure, based on the factors identified above. This adoption resulted in a reduction to both the recorded investment of mortgage loans, held-for-investment, and our allowance for loan losses of $1.9 billion on January 1, 2015. However, these additional charge-offs did not have a material impact on our comprehensive income during the nine months ended September 30, 2015, as we had already measured impairment for these loans based on collateral value in prior periods. Earnings Per Common Share The August 2012 amendment to the Purchase Agreement changed the manner in which the dividend on the senior preferred stock is determined. For each quarter from January 1, 2013 through and including December 31, 2017, the dividend payment will be the amount, if any, by which our Net Worth Amount at the end of the immediately preceding fiscal quarter, less the applicable Capital Reserve Amount, exceeds zero. See "NOTE 11: STOCKHOLDERS' EQUITY — Senior Preferred Stock" for additional information regarding the Capital Reserve Amount. For each quarter beginning January 1, 2018, the dividend payment will be the amount, if any, by which our Net Worth Amount at the end of the immediately preceding fiscal quarter exceeds zero. The dividend is presented in the period in which it is determinable for the senior preferred stock as a reduction to net income (loss) available to common stockholders and net income (loss) per common share. The dividend is declared and paid in the following period and recorded as a reduction to equity in the period declared. Because we have issued participating securities, we use the “two-class” method of computing earnings per common share. Basic earnings per common share is computed as net income attributable to common stockholders divided by the weighted average common shares outstanding for the period. The weighted average common shares outstanding for the period includes the weighted average number of shares that are associated with the warrant for our common stock issued to Treasury pursuant to the Purchase Agreement. These shares are included since the warrant is unconditionally exercisable by the holder at a minimal cost. Diluted earnings per common share is computed as net income attributable to common stockholders divided by the weighted average common shares outstanding during the period adjusted for the dilutive effect of common equivalent shares outstanding. For periods with net income attributable to common stockholders, the calculation includes the effect of the weighted average shares related to stock options if the average market price during the period exceeds the exercise price. During periods in which a net loss attributable to common stockholders has been incurred, potential common equivalent shares outstanding are not included in the calculation because it would have an antidilutive effect. See “NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES — Earnings Per Common Share” in our 2014 Annual Report for further discussion of our significant accounting policies regarding our calculation of earnings per common share and “NOTE 11: STOCKHOLDERS’ EQUITY — Stock-Based Compensation” for additional information on our earnings-per-share calculation. Recent Accounting Guidance The following table provides a brief description of recent accounting pronouncements that could affect our financial statements. Standard Description Date of Adoption Effect on the Financial Statements Recently Adopted Accounting Guidance ASU 2014-04, Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (Topic 310) The amendment clarifies that a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. January 1, 2015 The adoption of this amendment did not have a material effect on our consolidated financial statements. ASU 2014-11, Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures (Topic 860) The amendment requires repurchase-to-maturity transactions to be accounted for as secured borrowings and requires separate accounting for a transfer of a financial asset completed contemporaneously with a repurchase agreement with the same counterparty. January 1, 2015 The adoption of this amendment did not have a material effect on our consolidated financial statements. ASU 2014-14, Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure (Topic 310) The amendment requires that a mortgage loan be de-recognized and a separate receivable be recognized upon foreclosure if certain conditions are met. If those conditions are met and such a receivable is recognized, the receivable should be measured based on the amount of principal and interest related to the loan expected to be recovered from the guarantor. January 1, 2015 The adoption of this amendment did not have a material effect on our consolidated financial statements. Recently Issued Accounting Guidance, Not Yet Adopted Within our Consolidated Financial Statements ASU 2015-14, Revenue from Contracts with Customers (Topic 606) The amendment defers the effective date of ASU 2014-09 for all entities by one year. January 1, 2018 We are evaluating the effect that the adoption of this amendment will have on our consolidated financial statements. ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs (Subtopic 835-30) The amendment requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. January 1, 2016 We do not expect that the adoption of this amendment will have a material effect on our consolidated financial statements. ASU 2015-02, Amendments to the Consolidation Analysis (Topic 810) The amendment affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. January 1, 2016 We do not expect that the adoption of this amendment will have a material effect on our consolidated financial statements.

Conservatorship and Related Mat

Conservatorship and Related Matters	9 Months Ended
	Sep. 30, 2015
Conservatorship and Related Matters [Abstract]
CONSERVATORSHIP AND RELATED MATTERS	NOTE 2: CONSERVATORSHIP AND RELATED MATTERS Business Objectives We operate under the conservatorship that commenced on September 6, 2008, conducting our business under the direction of FHFA, as our Conservator. The conservatorship and related matters continue to have wide-ranging effects on us, including on our management, business activities, financial condition and results of operations. Upon its appointment, FHFA, as Conservator, immediately succeeded to all rights, titles, powers and privileges of Freddie Mac, and of any stockholder, officer or director thereof, with respect to the company and its assets. The Conservator also succeeded to the title to all books, records, and assets of Freddie Mac held by any other legal custodian or third party. The Conservator delegated certain authority to the Board of Directors to oversee, and management to conduct, business operations so that the company can continue to operate in the ordinary course. The directors serve on behalf of, and exercise authority as directed by, the Conservator. We are also subject to certain constraints on our business activities under the Purchase Agreement. However, we believe that the support provided by Treasury pursuant to the Purchase Agreement currently enables us to maintain our access to the debt markets and to have adequate liquidity to conduct our normal business activities, although the costs of our debt funding could vary. Our ability to access funds from Treasury under the Purchase Agreement is critical to keeping us solvent. Impact of Conservatorship and Related Developments on the Mortgage-Related Investments Portfolio For purposes of the limit imposed by the Purchase Agreement, the UPB of our mortgage-related investments portfolio may not exceed $399.2 billion at December 31, 2015 and was $367.1 billion at September 30, 2015. Our 2014 Retained Portfolio Plan provides for us to manage the UPB of the mortgage-related investments portfolio so that it does not exceed 90% of the annual cap, or $359.3 billion , established by the Purchase Agreement (subject to certain exceptions). The annual 15% reduction in our mortgage-related investments portfolio cap will continue until it reaches $250 billion and is calculated based on the maximum allowable size of the mortgage-related investments portfolio, rather than the actual UPB of the mortgage-related investments portfolio, as of December 31 of the preceding year. Our ability to acquire and sell mortgage assets is significantly constrained by limitations of the Purchase Agreement and those imposed by FHFA. Government Support for our Business We receive substantial support from Treasury and FHFA, as our Conservator and regulator, and are dependent upon their continued support in order to continue operating our business. This support includes our ability to access funds from Treasury under the Purchase Agreement, which is critical to: (a) keeping us solvent; (b) allowing us to focus on our primary business objectives under conservatorship; and (c) avoiding the appointment of a receiver by FHFA under statutory mandatory receivership provisions. At June 30, 2015, our assets exceeded our liabilities under GAAP; therefore FHFA did not request a draw on our behalf and, as a result, we did not receive any funding from Treasury under the Purchase Agreement during the three months ended September 30, 2015 . Since conservatorship began through September 30, 2015 , we have paid cash dividends of $96.5 billion to Treasury at the direction of the Conservator. As a result of the net worth sweep dividend provisions of the senior preferred stock, we cannot retain capital from the earnings generated by our business operations or return capital to stockholders other than Treasury, the holder of our senior preferred stock. Our future is uncertain, and the conservatorship has no specified termination date. We do not know what changes may occur to our business model during or following conservatorship, including whether we will continue to exist. We are not aware of any current plans of our Conservator to significantly change our business model or capital structure in the near term. Our future structure and role will be determined by the Administration and Congress, and there are likely to be significant changes beyond the near term. We have no ability to predict the outcome of these deliberations. See “NOTE 8: DEBT SECURITIES AND SUBORDINATED BORROWINGS” and “NOTE 11: STOCKHOLDERS’ EQUITY” in our 2014 Annual Report for more information on the conservatorship and the Purchase Agreement.

Variable Interest Entities

Variable Interest Entities	9 Months Ended
	Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
VARIABLE INTEREST ENTITIES	NOTE 3: VARIABLE INTEREST ENTITIES We have interests in various entities that are considered to be VIEs, including securitization trusts we use in our securities issuance process. We are required to evaluate VIEs at inception and on an ongoing basis. When we determine that we are the primary beneficiary of a VIE, we consolidate the assets and liabilities of the trust on our balance sheets. See “NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES — Consolidation and Equity Method of Accounting” in our 2014 Annual Report for more information about VIEs. VIEs for which We are the Primary Beneficiary At September 30, 2015 and December 31, 2014, we were the primary beneficiary of, and therefore consolidated, single-family trusts with assets totaling $1.6 trillion and $1.5 trillion , respectively, as measured using the UPB of issued PCs. In addition, we concluded that we are the primary beneficiary of certain Other Guarantee Transactions, with underlying assets totaling $8.1 billion and $7.4 billion at September 30, 2015 and December 31, 2014 , respectively, and consolidated them on our balance sheets. VIEs for which We are not the Primary Beneficiary The table below presents the carrying amounts and classification of the assets and liabilities recorded on our consolidated balance sheets related to our variable interests in non-consolidated VIEs in which we have significant continuing involvement, as well as our maximum exposure to loss as a result of our involvement with these VIEs. Table 3.1 — Variable Interests in VIEs for which We are not the Primary Beneficiary September 30, 2015 Freddie Mac Securities (1) Other (in millions) Assets and Liabilities Recorded on our Consolidated Balance Sheets Assets: Restricted cash and cash equivalents $ — $ 3 Investments in securities: Available-for-sale, at fair value 35,577 — Trading, at fair value 16,324 — Accrued interest receivable 218 8 Other assets 1,117 527 Liabilities: Derivative liabilities, net — (28 ) Other liabilities (1,112 ) (565 ) Maximum Exposure to Loss (2) $ 102,527 $ 10,613 Total Assets of Non-Consolidated VIEs (3) $ 121,143 $ 23,070 December 31, 2014 Freddie Mac Securities (1) Other (in millions) Assets and Liabilities Recorded on our Consolidated Balance Sheets Assets: Restricted cash and cash equivalents $ — $ 3 Investments in securities: Available-for-sale, at fair value 39,099 — Trading, at fair value 17,469 — Accrued interest receivable 236 7 Other assets 914 495 Liabilities: Derivative liabilities, net — (30 ) Other liabilities (1,005 ) (560 ) Maximum Exposure to Loss (2) $ 87,529 $ 10,419 Total Assets of Non-Consolidated VIEs (3) $ 103,253 $ 22,855 (1) Freddie Mac securities include our variable interests in single-family multiclass REMICs and Other Structured Securities, multifamily Other Structured Securities, and Other Guarantee Transactions that we do not consolidate. Our maximum exposure to loss includes guaranteed UPB of assets held by the non-consolidated VIEs related to multifamily Other Structured Securities and Other Guarantee Transactions. Our maximum exposure to loss on Freddie Mac securities excludes investments in single-family multiclass REMICs and Other Structured Securities, because we already consolidate the collateral of these trusts on our consolidated balance sheets. (2) For Freddie Mac securities, this represents the UPB of the securities. For other VIEs, this represents either the carrying amount or amortized cost recorded on our consolidated balance sheets. (3) Represents the UPB of assets held by non-consolidated VIEs using the most current information available to us. We also have interests in VIEs through our investments in non-Freddie Mac mortgage-related securities. Our only involvement with these VIEs is as a passive investor in the beneficial interests issued by the VIE and we do not have any power to influence the significant activities of these VIEs. See "NOTE 7: INVESTMENTS IN SECURITIES" for further information about these investments.

Mortgage Loans and Loan Loss Re

Mortgage Loans and Loan Loss Reserves	9 Months Ended
	Sep. 30, 2015
Mortgage Loans on Real Estate [Abstract]
MORTGAGE LOANS AND LOAN LOSS RESERVES	80 to 100 > 100 (2) Total ≤ 80 > 80 to 100 > 100 (2) Total (in millions) Single-family mortgage loans: 20 and 30-year or more, amortizing fixed-rate (3) $ 988,352 $ 251,940 $ 60,174 $ 1,300,466 $ 911,071 $ 258,126 $ 85,398 $ 1,254,595 15-year amortizing fixed-rate (3) 270,533 13,427 2,161 286,121 265,098 14,101 3,338 282,537 Adjustable-rate 60,044 5,559 347 65,950 60,463 6,701 709 67,873 Alt-A, interest-only, and option ARM 27,696 14,597 10,376 52,669 28,935 18,232 16,448 63,615 Total single-family mortgage loans $ 1,346,625 $ 285,523 $ 73,058 $ 1,705,206 $ 1,265,567 $ 297,160 $ 105,893 $ 1,668,620 (1) The current LTV ratios are management estimates, which are updated on a monthly basis. Current market values are estimated by adjusting the value of the property at origination based on changes in the market value of homes in the same geographic area since that time. Changes in market value are derived from our internal index which measures price changes for repeat sales and refinancing activity on the same properties using Freddie Mac and Fannie Mae single-family mortgage loan acquisitions, including foreclosure sales. Estimates of the current LTV ratio include the credit-enhanced portion of the mortgage loan and exclude any secondary financing by third parties. (2) The serious delinquency rate for the total of single-family held-for-investment mortgage loans with estimated current LTV ratios in excess of 100% was 6.39% and 9.01% as of September 30, 2015 and December 31, 2014, respectively. (3) The majority of our mortgage loan modifications result in new terms that include fixed interest rates after modification. As of September 30, 2015 and December 31, 2014, we have categorized UPB of approximately $39.5 billion and $42.3 billion , respectively, of modified mortgage loans as fixed-rate mortgage loans (instead of as adjustable rate mortgage loans), even though the modified mortgage loans have rate adjustment provisions. In these cases, while the terms of the modified mortgage loans provide for the interest rate to adjust in the future, such future rates are determined at the time of modification rather than at a subsequent date. We have discontinued our purchases of Alt-A, interest-only, and option ARM loans. For reporting purposes, mortgage loans within the Alt-A category continue to be presented in that category following modification, even though the borrower may have provided full documentation of assets and income to complete the modification, and mortgage loans within the option ARM category continue to be presented in that category following modification, even though the modified mortgage loan no longer provides for optional payment provisions. A second-lien mortgage loan reduces the borrower’s equity in the home, and has a negative effect on the borrower’s ability to refinance or sell the property for an amount at or above the combined balances of the first and second mortgage loans. As of September 30, 2015 and December 31, 2014, based on data collected by us at mortgage loan delivery, approximately 13% and 14% , respectively, of mortgage loans in our single-family credit guarantee portfolio had second-lien financing by the originator or other third party at origination of the first mortgage loan. However, borrowers are free to obtain second-lien financing after origination, and we are not entitled to receive notification when a borrower does so. Therefore, it is likely that additional borrowers have post-origination second-lien mortgage loans. For further information about concentrations of risk associated with our single-family and multifamily mortgage loans, see “NOTE 15: CONCENTRATION OF CREDIT AND OTHER RISKS.” The following table presents the recorded investment in our multifamily held-for-investment mortgage loans, by credit quality indicator as of September 30, 2015 and December 31, 2014. The multifamily credit quality indicator is based on available data through the end of each period presented. Table 4.3 — Recorded Investment of Multifamily Mortgage Loans, by Credit Classification September 30, 2015 December 31, 2014 (in millions) Credit risk profile by internally assigned grade: (1) Pass $ 31,341 $ 38,518 Special mention 1,291 1,805 Substandard 595 1,030 Doubtful — — Total $ 33,227 $ 41,353 (1) A mortgage loan categorized as: "Pass" is current and adequately protected by the current financial strength and debt service capacity of the borrower; "Special mention" has signs of potential financial weakness; "Substandard" has a well-defined financial weakness that jeopardizes the timely full repayment; and "Doubtful" has a weakness that makes collection or liquidation in full highly questionable and improbable based on existing conditions. For information about the payment status of single-family and multifamily mortgage loans, including the amount of such mortgage loans we deem impaired, see “NOTE 5: IMPAIRED MORTGAGE LOANS.” Allowance for Loan Losses and Reserve for Guarantee Losses, or Loan Loss Reserves Our loan loss reserves consist of our allowance for loan losses on mortgage loans that we classify as held-for investment on our consolidated balance sheets and reserve for guarantee losses associated with Freddie Mac mortgage-related securities backed by multifamily mortgage loans, certain single-family Other Guarantee Transactions, and other guarantee commitments, for which we have incremental credit risk. On January 1, 2015, we adopted regulatory guidance that changed when we deem a mortgage loan to be uncollectible and we recognized $1.9 billion of charge-offs on that date related to this change in estimate. See "NOTE 1: SUMMARY OF SIGNFICANT ACCOUNTING POLICIES" for further information about this change. The table below presents our loan loss reserves activity. Table 4.4 — Detail of Loan Loss Reserves Three Months Ended September 30, 2015 2014 Allowance for Loan Losses Reserve for Allowance for Loan Losses Reserve for Unsecuritized Held By Consolidated Trusts Total Unsecuritized Held By Consolidated Trusts Total (dollars in millions) Single-family: Beginning balance $ 14,535 $ 2,738 $ 67 $ 17,340 $ 19,956 $ 2,652 $ 100 $ 22,708 Provision (benefit) for credit losses (652 ) 122 2 (528 ) 211 378 (5 ) 584 Charge-offs (605 ) (73 ) (2 ) (680 ) (1,014 ) (72 ) (2 ) (1,088 ) Recoveries 174 3 — 177 184 6 — 190 Transfers, net (1) (128 ) 260 (1 ) 131 55 137 — 192 Ending balance $ 13,324 $ 3,050 $ 66 $ 16,440 $ 19,392 $ 3,101 $ 93 $ 22,586 Multifamily: Beginning balance $ 54 $ — $ 14 $ 68 $ 91 $ — $ 16 $ 107 Provision (benefit) for credit losses (6 ) — 6 — (11 ) — 1 (10 ) Charge-offs (3 ) — — (3 ) — — — — Recoveries — — — — 1 — — 1 Transfers, net (1) (1 ) 1 — — — — — — Ending balance $ 44 $ 1 $ 20 $ 65 $ 81 $ — $ 17 $ 98 Total: Beginning balance $ 14,589 $ 2,738 $ 81 $ 17,408 $ 20,047 $ 2,652 $ 116 $ 22,815 Provision (benefit) for credit losses (658 ) 122 8 (528 ) 200 378 (4 ) 574 Charge-offs (608 ) (73 ) (2 ) (683 ) (1,014 ) (72 ) (2 ) (1,088 ) Recoveries 174 3 — 177 185 6 — 191 Transfers, net (1) (129 ) 261 (1 ) 131 55 137 — 192 Ending balance $ 13,368 $ 3,051 $ 86 $ 16,505 $ 19,473 $ 3,101 $ 110 $ 22,684 Ratio of total loan loss reserves (excluding reserves for TDR concessions) to annualized net charge-offs for single-family mortgage loans 2.9 3.1 Ratio of total loan loss reserves to annualized net charge-offs for single-family mortgage loans 8.2 6.3 Nine Months Ended September 30, 2015 2014 Allowance for Loan Losses Reserve for Allowance for Loan Losses Reserve for Unsecuritized Held By Consolidated Trusts Total Unsecuritized Held By Consolidated Trusts Total (in millions) Single-family: Beginning balance $ 18,800 $ 2,884 $ 109 $ 21,793 $ 21,487 $ 3,006 $ 85 $ 24,578 Provision (benefit) for credit losses (2,050 ) 222 (36 ) (1,864 ) (665 ) 745 13 93 Charge-offs (4,179 ) (298 ) (6 ) (4,483 ) (3,464 ) (298 ) (5 ) (3,767 ) Recoveries 535 12 — 547 848 252 — 1,100 Transfers, net (1) 218 230 (1 ) 447 1,186 (604 ) — 582 Ending balance $ 13,324 $ 3,050 $ 66 $ 16,440 $ 19,392 $ 3,101 $ 93 $ 22,586 Multifamily: Beginning balance $ 77 $ — $ 17 $ 94 $ 125 $ — $ 26 $ 151 Provision (benefit) for credit losses (23 ) — 3 (20 ) (43 ) — (9 ) (52 ) Charge-offs (9 ) — — (9 ) (2 ) — — (2 ) Recoveries — — — — 1 — — 1 Transfers, net (1) (1 ) 1 — — — — — — Ending balance $ 44 $ 1 $ 20 $ 65 $ 81 $ — $ 17 $ 98 Total: Beginning balance $ 18,877 $ 2,884 $ 126 $ 21,887 $ 21,612 $ 3,006 $ 111 $ 24,729 Provision (benefit) for credit losses (2,073 ) 222 (33 ) (1,884 ) (708 ) 745 4 41 Charge-offs (4,188 ) (298 ) (6 ) (4,492 ) (3,466 ) (298 ) (5 ) (3,769 ) Recoveries 535 12 — 547 849 252 — 1,101 Transfers, net (1) 217 231 (1 ) 447 1,186 (604 ) — 582 Ending balance $ 13,368 $ 3,051 $ 86 $ 16,505 $ 19,473 $ 3,101 $ 110 $ 22,684 (1) Includes approximately $0.1 billion and $0.2 billion during the three months ended September 30, 2015 and the three months ended September 30, 2014, respectively; and $0.4 billion and $0.6 billion during the nine months ended September 30, 2015 and the nine months ended September 30, 2014, respectively, attributable to capitalization of past due interest on modified mortgage loans. Also includes amounts associated with reclassified single-family reserves related to our removal of mortgage loans previously held by consolidated trusts, net of reclassifications for single-family mortgage loans subsequently resecuritized after such removal. The table below presents our allowance for loan losses and our recorded investment in mortgage loans, held-for-investment, by impairment evaluation methodology. Table 4.5 — Net Investment in Mortgage Loans September 30, 2015 December 31, 2014 Single-family Multifamily Total Single-family Multifamily Total (in millions) Recorded investment: Collectively evaluated $ 1,612,481 $ 32,659 $ 1,645,140 $ 1,568,237 $ 40,451 $ 1,608,688 Individually evaluated 92,725 568 93,293 100,383 902 101,285 Total recorded investment 1,705,206 33,227 1,738,433 1,668,620 41,353 1,709,973 Ending balance of the allowance for loan losses: Collectively evaluated (1,527 ) (21 ) (1,548 ) (3,847 ) (25 ) (3,872 ) Individually evaluated (14,847 ) (24 ) (14,871 ) (17,837 ) (52 ) (17,889 ) Total ending balance of the allowance (16,374 ) (45 ) (16,419 ) (21,684 ) (77 ) (21,761 ) Net investment in mortgage loans $ 1,688,832 $ 33,182 $ 1,722,014 $ 1,646,936 $ 41,276 $ 1,688,212 A significant number of unsecuritized single-family mortgage loans on our consolidated balance sheets are individually evaluated for impairment while substantially all single-family mortgage loans held by our consolidated trusts are collectively evaluated for impairment. The ending balance of the allowance for loan losses associated with our held-for-investment unsecuritized mortgage loans represented approximately 11.1% and 12.7% of the recorded investment in such mortgage loans at September 30, 2015 and December 31, 2014 , respectively, and a substantial portion of the allowance associated with these mortgage loans represented interest rate concessions provided to borrowers as part of mortgage loan modifications. The ending balance of the allowance for loan losses associated with mortgage loans held by our consolidated trusts represented approximately 0.2% of the recorded investment in such mortgage loans as of both September 30, 2015 and December 31, 2014 . Credit Protection and Other Forms of Credit Enhancement In connection with many of our mortgage loans and other mortgage-related guarantees, we have credit protection in the form of primary mortgage insurance, credit risk transfer transactions, pool insurance, lender recourse and indemnification, and other forms of credit enhancements. The table below presents the UPB of mortgage loans on our consolidated balance sheets or underlying our financial guarantees with credit protection and the maximum amounts of potential loss recovery by type of credit protection. Table 4.6 — Recourse and Other Forms of Credit Protection (1) UPB at Maximum Coverage (2) at September 30, 2015 December 31, 2014 September 30, 2015 December 31, 2014 (in millions) Single-family: Primary mortgage insurance $ 249,182 $ 227,495 $ 63,693 $ 57,938 Other credit protection: STACR debt note and ACIS transactions (3) 214,902 144,272 11,906 6,657 Lender recourse and indemnifications 6,267 6,527 5,505 6,092 Pool insurance (4) 1,821 2,284 790 947 HFA indemnification 2,715 3,357 2,715 3,324 Subordination (5) 2,477 2,377 315 339 Other credit enhancements 19 20 15 18 Total $ 477,383 $ 386,332 $ 84,939 $ 75,315 Multifamily: K Certificates $ 90,704 $ 75,541 $ 16,488 $ 13,576 Subordination (5) 5,252 4,724 887 796 HFA indemnification 711 772 699 699 Other credit enhancements 6,269 5,706 2,298 1,685 Total $ 102,936 $ 86,743 $ 20,372 $ 16,756 (1) Except for the majority of our single-family credit risk transfer transactions, our credit enhancements generally provide protection for the first, or initial, credit losses associated with the related mortgage loans. Excludes: (a) FHA/VA and other governmental mortgage loans; (b) purchased credit protection associated with $8.7 billion and $9.8 billion in UPB of single-family mortgage loans underlying Other Guarantee Transactions as of September 30, 2015 and December 31, 2014, respectively; and (c) repurchase rights (subject to certain conditions and limitations) we have under representations and warranties provided by our agreements with seller/servicers to underwrite mortgage loans and service them in accordance with our standards. (2) Except for subordination and K Certificates, this represents the remaining amount of loss recovery that is available subject to terms of counterparty agreements. For subordination and K Certificates coverage, this represents the UPB of the securities that are subordinate to our guarantee, which provide protection by absorbing first losses. (3) Excludes $72.6 billion and $48.3 billion in UPB at September 30, 2015 and December 31, 2014, respectively, where the related mortgage loans are also covered by primary mortgage insurance. Maximum coverage amounts presented represent the outstanding balance of STACR debt notes held by third parties as well as the remaining aggregate limit of insurance purchased from third parties in ACIS transactions. (4) Excludes approximately $0.7 billion and $0.9 billion in UPB at September 30, 2015 and December 31, 2014, respectively, where the related mortgage loans are also covered by primary mortgage insurance. (5) Represents Freddie Mac issued mortgage-related securities with subordination protection, excluding multifamily K Certificates and those securities backed by state and local HFA bonds related to the HFA initiative. Primary mortgage insurance and credit risk transfers are the most prevalent types of credit enhancements protecting our single-family credit guarantee portfolio. For information about counterparty risk associated with mortgage insurers, see “NOTE 15: CONCENTRATION OF CREDIT AND OTHER RISKS — Mortgage Insurers.” Our credit risk transfer transactions include STACR debt note and ACIS transactions, which provide credit enhancement by transferring a portion of credit losses on single-family mortgage loans to third party investors and insurers. The value of these transactions to us is dependent on various economic scenarios, and we will primarily benefit from these transactions if we experience significant mortgage loan defaults. We completed six and five STACR debt note transactions during the nine months ended September 30, 2015 and the nine months ended September 30, 2014, respectively. We completed six and two ACIS transactions during the nine months ended September 30, 2015 and the nine months ended September 30, 2014, respectively. We also have credit enhancements protecting our multifamily mortgage portfolio. The most prevalent type is subordination, primarily through our K Certificates. Through subordination, we mitigate our credit risk exposure by structuring our securities to sell the expected credit risk to private investors who purchase the subordinate tranches. We also have credit protection for certain mortgage loans on our consolidated balance sheets that are covered by insurance or partial guarantees issued by federal agencies (such as FHA, VA, and USDA). The total UPB of these mortgage loans was $3.3 billion and $3.6 billion as of September 30, 2015 and December 31, 2014, respectively. Non-Cash Investing and Financing Activities We acquired $189.0 billion and $137.1 billion of mortgage loans held-for-investment in exchange for the issuance of debt securities of consolidated trusts in guarantor swap transactions during the nine months ended September 30, 2015 and the nine months ended September 30, 2014, respectively. These guarantor swap transactions during the nine months ended September 30, 2015 included approximately $7.6 billion of mortgage loans received from sellers to satisfy advances that were recorded in other assets on our condensed consolidated balance sheets." id="sjs-B4">NOTE 4: MORTGAGE LOANS AND LOAN LOSS RESERVES We own both single-family mortgage loans, which are secured by one to four unit residential properties, and multifamily mortgage loans, which are secured by properties with five or more residential rental units. Our single-family mortgage loans are predominantly first lien, fixed-rate mortgage loans secured by the borrower’s primary residence. For a discussion of our significant accounting policies regarding our mortgage loans and loan loss reserves, see “NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES" in our 2014 Annual Report. The table below summarizes the types of mortgage loans on our consolidated balance sheets as of September 30, 2015 and December 31, 2014. Table 4.1 — Mortgage Loans September 30, 2015 December 31, 2014 Unsecuritized Held By Consolidated Trusts Total Unsecuritized Held By Consolidated Trusts Total (in millions) Single-family: Fixed-rate Amortizing $ 94,573 $ 1,492,466 $ 1,587,039 $ 105,560 $ 1,431,872 $ 1,537,432 Interest-only 641 2,461 3,102 939 3,298 4,237 Total fixed-rate 95,214 1,494,927 1,590,141 106,499 1,435,170 1,541,669 Adjustable-rate Amortizing 1,070 66,755 67,825 1,353 68,632 69,985 Interest-only 2,458 17,922 20,380 3,191 20,373 23,564 Total adjustable-rate 3,528 84,677 88,205 4,544 89,005 93,549 Other Guarantee Transactions — 6,123 6,123 — 7,042 7,042 FHA/VA and other governmental 453 2,848 3,301 473 3,139 3,612 Total single-family 99,195 1,588,575 1,687,770 111,516 1,534,356 1,645,872 Multifamily: Fixed-rate 42,785 1,737 44,522 43,632 524 44,156 Adjustable-rate 11,432 — 11,432 9,321 — 9,321 Other governmental 3 — 3 3 — 3 Total multifamily 54,220 1,737 55,957 52,956 524 53,480 Total UPB of mortgage loans 153,415 1,590,312 1,743,727 164,472 1,534,880 1,699,352 Deferred fees, unamortized premiums, discounts and other cost basis adjustments (4,611 ) 28,030 23,419 (3,366 ) 26,098 22,732 Fair value adjustments on mortgage loans held-for sale (860 ) — (860 ) 257 — 257 Allowance for loan losses on mortgage loans held-for-investment (13,368 ) (3,051 ) (16,419 ) (18,877 ) (2,884 ) (21,761 ) Total mortgage loans, net $ 134,576 $ 1,615,291 $ 1,749,867 $ 142,486 $ 1,558,094 $ 1,700,580 Mortgage loans, net: Held-for-investment $ 106,723 $ 1,615,291 $ 1,722,014 $ 130,118 $ 1,558,094 $ 1,688,212 Held-for-sale 27,853 — 27,853 12,368 — 12,368 Total mortgage loans, net $ 134,576 $ 1,615,291 $ 1,749,867 $ 142,486 $ 1,558,094 $ 1,700,580 During the three months ended September 30, 2015 and the three months ended September 30, 2014 , we purchased $92.6 billion and $75.8 billion , respectively, in UPB of single-family mortgage loans, and $1.4 billion and $0.3 billion , respectively, in UPB of multifamily mortgage loans that were classified as held-for-investment. During the nine months ended September 30, 2015 and the nine months ended September 30, 2014, we purchased $271.6 billion and $182.2 billion , respectively, in UPB of single-family mortgage loans, and $3.2 billion and $1.6 billion , respectively, in UPB of multifamily mortgage loans that were classified as held-for-investment. Our sales of multifamily mortgage loans occur primarily through the issuance of multifamily K Certificates, which we categorize as Other Guarantee Transactions. During the three months ended September 30, 2015 and the three months ended September 30, 2014, we sold $6.0 billion and $4.5 billion , respectively, in UPB of held-for-sale multifamily mortgage loans. During the nine months ended September 30, 2015 and the nine months ended September 30, 2014, we sold $21.2 billion and $12.9 billion , respectively, in UPB of held-for-sale multifamily mortgage loans. See “NOTE 14: FINANCIAL GUARANTEES” for more information on our issuances of Other Guarantee Transactions. In January 2015, FHFA informed us that it would not object to our sales of additional seriously delinquent single-family mortgage loans. As a result, we reclassified $2.5 billion and $10.6 billion in UPB of mortgage loans from held-for-investment to held-for-sale during the three and nine months ended September 30, 2015, respectively. We reclassified $1.8 billion and $2.1 billion in UPB of multifamily mortgage loans from held-for-investment to held-for-sale during the three and nine months ended September 30, 2015, respectively. For information regarding the fair value of our mortgage loans classified as held-for-sale, see "NOTE 16: FAIR VALUE DISCLOSURES." Credit Quality of Mortgage Loans We evaluate the credit quality of single-family mortgage loans using different criteria than the criteria we use to evaluate multifamily mortgage loans. The current LTV ratio is one key factor we consider when estimating our loan loss reserves for single-family mortgage loans. As estimated current LTV ratios increase, the borrower’s equity in the home decreases, which negatively affects the borrower’s ability to refinance (outside of HARP) or to sell the property for an amount at or above the balance of the outstanding mortgage loan. The table below presents information on the estimated current LTV ratios of single-family held-for-investment mortgage loans on our consolidated balance sheets. Our current LTV ratio estimates are based on available data through the end of each respective period presented. Table 4.2 — Recorded Investment of Single-Family Mortgage Loans, by LTV Ratio As of September 30, 2015 As of December 31, 2014 Estimated Current LTV Ratio (1) Estimated Current LTV Ratio (1) ≤ 80 > 80 to 100 > 100 (2) Total ≤ 80 > 80 to 100 > 100 (2) Total (in millions) Single-family mortgage loans: 20 and 30-year or more, amortizing fixed-rate (3) $ 988,352 $ 251,940 $ 60,174 $ 1,300,466 $ 911,071 $ 258,126 $ 85,398 $ 1,254,595 15-year amortizing fixed-rate (3) 270,533 13,427 2,161 286,121 265,098 14,101 3,338 282,537 Adjustable-rate 60,044 5,559 347 65,950 60,463 6,701 709 67,873 Alt-A, interest-only, and option ARM 27,696 14,597 10,376 52,669 28,935 18,232 16,448 63,615 Total single-family mortgage loans $ 1,346,625 $ 285,523 $ 73,058 $ 1,705,206 $ 1,265,567 $ 297,160 $ 105,893 $ 1,668,620 (1) The current LTV ratios are management estimates, which are updated on a monthly basis. Current market values are estimated by adjusting the value of the property at origination based on changes in the market value of homes in the same geographic area since that time. Changes in market value are derived from our internal index which measures price changes for repeat sales and refinancing activity on the same properties using Freddie Mac and Fannie Mae single-family mortgage loan acquisitions, including foreclosure sales. Estimates of the current LTV ratio include the credit-enhanced portion of the mortgage loan and exclude any secondary financing by third parties. (2) The serious delinquency rate for the total of single-family held-for-investment mortgage loans with estimated current LTV ratios in excess of 100% was 6.39% and 9.01% as of September 30, 2015 and December 31, 2014, respectively. (3) The majority of our mortgage loan modifications result in new terms that include fixed interest rates after modification. As of September 30, 2015 and December 31, 2014, we have categorized UPB of approximately $39.5 billion and $42.3 billion , respectively, of modified mortgage loans as fixed-rate mortgage loans (instead of as adjustable rate mortgage loans), even though the modified mortgage loans have rate adjustment provisions. In these cases, while the terms of the modified mortgage loans provide for the interest rate to adjust in the future, such future rates are determined at the time of modification rather than at a subsequent date. We have discontinued our purchases of Alt-A, interest-only, and option ARM loans. For reporting purposes, mortgage loans within the Alt-A category continue to be presented in that category following modification, even though the borrower may have provided full documentation of assets and income to complete the modification, and mortgage loans within the option ARM category continue to be presented in that category following modification, even though the modified mortgage loan no longer provides for optional payment provisions. A second-lien mortgage loan reduces the borrower’s equity in the home, and has a negative effect on the borrower’s ability to refinance or sell the property for an amount at or above the combined balances of the first and second mortgage loans. As of September 30, 2015 and December 31, 2014, based on data collected by us at mortgage loan delivery, approximately 13% and 14% , respectively, of mortgage loans in our single-family credit guarantee portfolio had second-lien financing by the originator or other third party at origination of the first mortgage loan. However, borrowers are free to obtain second-lien financing after origination, and we are not entitled to receive notification when a borrower does so. Therefore, it is likely that additional borrowers have post-origination second-lien mortgage loans. For further information about concentrations of risk associated with our single-family and multifamily mortgage loans, see “NOTE 15: CONCENTRATION OF CREDIT AND OTHER RISKS.” The following table presents the recorded investment in our multifamily held-for-investment mortgage loans, by credit quality indicator as of September 30, 2015 and December 31, 2014. The multifamily credit quality indicator is based on available data through the end of each period presented. Table 4.3 — Recorded Investment of Multifamily Mortgage Loans, by Credit Classification September 30, 2015 December 31, 2014 (in millions) Credit risk profile by internally assigned grade: (1) Pass $ 31,341 $ 38,518 Special mention 1,291 1,805 Substandard 595 1,030 Doubtful — — Total $ 33,227 $ 41,353 (1) A mortgage loan categorized as: "Pass" is current and adequately protected by the current financial strength and debt service capacity of the borrower; "Special mention" has signs of potential financial weakness; "Substandard" has a well-defined financial weakness that jeopardizes the timely full repayment; and "Doubtful" has a weakness that makes collection or liquidation in full highly questionable and improbable based on existing conditions. For information about the payment status of single-family and multifamily mortgage loans, including the amount of such mortgage loans we deem impaired, see “NOTE 5: IMPAIRED MORTGAGE LOANS.” Allowance for Loan Losses and Reserve for Guarantee Losses, or Loan Loss Reserves Our loan loss reserves consist of our allowance for loan losses on mortgage loans that we classify as held-for investment on our consolidated balance sheets and reserve for guarantee losses associated with Freddie Mac mortgage-related securities backed by multifamily mortgage loans, certain single-family Other Guarantee Transactions, and other guarantee commitments, for which we have incremental credit risk. On January 1, 2015, we adopted regulatory guidance that changed when we deem a mortgage loan to be uncollectible and we recognized $1.9 billion of charge-offs on that date related to this change in estimate. See "NOTE 1: SUMMARY OF SIGNFICANT ACCOUNTING POLICIES" for further information about this change. The table below presents our loan loss reserves activity. Table 4.4 — Detail of Loan Loss Reserves Three Months Ended September 30, 2015 2014 Allowance for Loan Losses Reserve for Allowance for Loan Losses Reserve for Unsecuritized Held By Consolidated Trusts Total Unsecuritized Held By Consolidated Trusts Total (dollars in millions) Single-family: Beginning balance $ 14,535 $ 2,738 $ 67 $ 17,340 $ 19,956 $ 2,652 $ 100 $ 22,708 Provision (benefit) for credit losses (652 ) 122 2 (528 ) 211 378 (5 ) 584 Charge-offs (605 ) (73 ) (2 ) (680 ) (1,014 ) (72 ) (2 ) (1,088 ) Recoveries 174 3 — 177 184 6 — 190 Transfers, net (1) (128 ) 260 (1 ) 131 55 137 — 192 Ending balance $ 13,324 $ 3,050 $ 66 $ 16,440 $ 19,392 $ 3,101 $ 93 $ 22,586 Multifamily: Beginning balance $ 54 $ — $ 14 $ 68 $ 91 $ — $ 16 $ 107 Provision (benefit) for credit losses (6 ) — 6 — (11 ) — 1 (10 ) Charge-offs (3 ) — — (3 ) — — — — Recoveries — — — — 1 — — 1 Transfers, net (1) (1 ) 1 — — — — — — Ending balance $ 44 $ 1 $ 20 $ 65 $ 81 $ — $ 17 $ 98 Total: Beginning balance $ 14,589 $ 2,738 $ 81 $ 17,408 $ 20,047 $ 2,652 $ 116 $ 22,815 Provision (benefit) for credit losses (658 ) 122 8 (528 ) 200 378 (4 ) 574 Charge-offs (608 ) (73 ) (2 ) (683 ) (1,014 ) (72 ) (2 ) (1,088 ) Recoveries 174 3 — 177 185 6 — 191 Transfers, net (1) (129 ) 261 (1 ) 131 55 137 — 192 Ending balance $ 13,368 $ 3,051 $ 86 $ 16,505 $ 19,473 $ 3,101 $ 110 $ 22,684 Ratio of total loan loss reserves (excluding reserves for TDR concessions) to annualized net charge-offs for single-family mortgage loans 2.9 3.1 Ratio of total loan loss reserves to annualized net charge-offs for single-family mortgage loans 8.2 6.3 Nine Months Ended September 30, 2015 2014 Allowance for Loan Losses Reserve for Allowance for Loan Losses Reserve for Unsecuritized Held By Consolidated Trusts Total Unsecuritized Held By Consolidated Trusts Total (in millions) Single-family: Beginning balance $ 18,800 $ 2,884 $ 109 $ 21,793 $ 21,487 $ 3,006 $ 85 $ 24,578 Provision (benefit) for credit losses (2,050 ) 222 (36 ) (1,864 ) (665 ) 745 13 93 Charge-offs (4,179 ) (298 ) (6 ) (4,483 ) (3,464 ) (298 ) (5 ) (3,767 ) Recoveries 535 12 — 547 848 252 — 1,100 Transfers, net (1) 218 230 (1 ) 447 1,186 (604 ) — 582 Ending balance $ 13,324 $ 3,050 $ 66 $ 16,440 $ 19,392 $ 3,101 $ 93 $ 22,586 Multifamily: Beginning balance $ 77 $ — $ 17 $ 94 $ 125 $ — $ 26 $ 151 Provision (benefit) for credit losses (23 ) — 3 (20 ) (43 ) — (9 ) (52 ) Charge-offs (9 ) — — (9 ) (2 ) — — (2 ) Recoveries — — — — 1 — — 1 Transfers, net (1) (1 ) 1 — — — — — — Ending balance $ 44 $ 1 $ 20 $ 65 $ 81 $ — $ 17 $ 98 Total: Beginning balance $ 18,877 $ 2,884 $ 126 $ 21,887 $ 21,612 $ 3,006 $ 111 $ 24,729 Provision (benefit) for credit losses (2,073 ) 222 (33 ) (1,884 ) (708 ) 745 4 41 Charge-offs (4,188 ) (298 ) (6 ) (4,492 ) (3,466 ) (298 ) (5 ) (3,769 ) Recoveries 535 12 — 547 849 252 — 1,101 Transfers, net (1) 217 231 (1 ) 447 1,186 (604 ) — 582 Ending balance $ 13,368 $ 3,051 $ 86 $ 16,505 $ 19,473 $ 3,101 $ 110 $ 22,684 (1) Includes approximately $0.1 billion and $0.2 billion during the three months ended September 30, 2015 and the three months ended September 30, 2014, respectively; and $0.4 billion and $0.6 billion during the nine months ended September 30, 2015 and the nine months ended September 30, 2014, respectively, attributable to capitalization of past due interest on modified mortgage loans. Also includes amounts associated with reclassified single-family reserves related to our removal of mortgage loans previously held by consolidated trusts, net of reclassifications for single-family mortgage loans subsequently resecuritized after such removal. The table below presents our allowance for loan losses and our recorded investment in mortgage loans, held-for-investment, by impairment evaluation methodology. Table 4.5 — Net Investment in Mortgage Loans September 30, 2015 December 31, 2014 Single-family Multifamily Total Single-family Multifamily Total (in millions) Recorded investment: Collectively evaluated $ 1,612,481 $ 32,659 $ 1,645,140 $ 1,568,237 $ 40,451 $ 1,608,688 Individually evaluated 92,725 568 93,293 100,383 902 101,285 Total recorded investment 1,705,206 33,227 1,738,433 1,668,620 41,353 1,709,973 Ending balance of the allowance for loan losses: Collectively evaluated (1,527 ) (21 ) (1,548 ) (3,847 ) (25 ) (3,872 ) Individually evaluated (14,847 ) (24 ) (14,871 ) (17,837 ) (52 ) (17,889 ) Total ending balance of the allowance (16,374 ) (45 ) (16,419 ) (21,684 ) (77 ) (21,761 ) Net investment in mortgage loans $ 1,688,832 $ 33,182 $ 1,722,014 $ 1,646,936 $ 41,276 $ 1,688,212 A significant number of unsecuritized single-family mortgage loans on our consolidated balance sheets are individually evaluated for impairment while substantially all single-family mortgage loans held by our consolidated trusts are collectively evaluated for impairment. The ending balance of the allowance for loan losses associated with our held-for-investment unsecuritized mortgage loans represented approximately 11.1% and 12.7% of the recorded investment in such mortgage loans at September 30, 2015 and December 31, 2014 , respectively, and a substantial portion of the allowance associated with these mortgage loans represented interest rate concessions provided to borrowers as part of mortgage loan modifications. The ending balance of the allowance for loan losses associated with mortgage loans held by our consolidated trusts represented approximately 0.2% of the recorded investment in such mortgage loans as of both September 30, 2015 and December 31, 2014 . Credit Protection and Other Forms of Credit Enhancement In connection with many of our mortgage loans and other mortgage-related guarantees, we have credit protection in the form of primary mortgage insurance, credit risk transfer transactions, pool insurance, lender recourse and indemnification, and other forms of credit enhancements. The table below presents the UPB of mortgage loans on our consolidated balance sheets or underlying our financial guarantees with credit protection and the maximum amounts of potential loss recovery by type of credit protection. Table 4.6 — Recourse and Other Forms of Credit Protection (1) UPB at Maximum Coverage (2) at September 30, 2015 December 31, 2014 September 30, 2015 December 31, 2014 (in millions) Single-family: Primary mortgage insurance $ 249,182 $ 227,495 $ 63,693 $ 57,938 Other credit protection: STACR debt note and ACIS transactions (3) 214,902 144,272 11,906 6,657 Lender recourse and indemnifications 6,267 6,527 5,505 6,092 Pool insurance (4) 1,821 2,284 790 947 HFA indemnification 2,715 3,357 2,715 3,324 Subordination (5) 2,477 2,377 315 339 Other credit enhancements 19 20 15 18 Total $ 477,383 $ 386,332 $ 84,939 $ 75,315 Multifamily: K Certificates $ 90,704 $ 75,541 $ 16,488 $ 13,576 Subordination (5) 5,252 4,724 887 796 HFA indemnification 711 772 699 699 Other credit enhancements 6,269 5,706 2,298 1,685 Total $ 102,936 $ 86,743 $ 20,372 $ 16,756 (1) Except for the majority of our single-family credit risk transfer transactions, our credit enhancements generally provide protection for the first, or initial, credit losses associated with the related mortgage loans. Excludes: (a) FHA/VA and other governmental mortgage loans; (b) purchased credit protection associated with $8.7 billion and $9.8 billion in UPB of single-family mortgage loans underlying Other Guarantee Transactions as of September 30, 2015 and December 31, 2014, respectively; and (c) repurchase rights (subject to certain conditions and limitations) we have under representations and warranties provided by our agreements with seller/servicers to underwrite mortgage loans and service them in accordance with our standards. (2) Except for subordination and K Certificates, this represents the remaining amount of loss recovery that is available subject to terms of counterparty agreements. For subordination and K Certificates coverage, this represents the UPB of the securities that are subordinate to our guarantee, which provide protection by absorbing first losses. (3) Excludes $72.6 billion and $48.3 billion in UPB at September 30, 2015 and December 31, 2014, respectively, where the related mortgage loans are also covered by primary mortgage insurance. Maximum coverage amounts presented represent the outstanding balance of STACR debt notes held by third parties as well as the remaining aggregate limit of insurance purchased from third parties in ACIS transactions. (4) Excludes approximately $0.7 billion and $0.9 billion in UPB at September 30, 2015 and December 31, 2014, respectively, where the related mortgage loans are also covered by primary mortgage insurance. (5) Represents Freddie Mac issued mortgage-related securities with subordination protection, excluding multifamily K Certificates and those securities backed by state and local HFA bonds related to the HFA initiative. Primary mortgage insurance and credit risk transfers are the most prevalent types of credit enhancements protecting our single-family credit guarantee portfolio. For information about counterparty risk associated with mortgage insurers, see “NOTE 15: CONCENTRATION OF CREDIT AND OTHER RISKS — Mortgage Insurers.” Our credit risk transfer transactions include STACR debt note and ACIS transactions, which provide credit enhancement by transferring a portion of credit losses on single-family mortgage loans to third party investors and insurers. The value of these transactions to us is dependent on various economic scenarios, and we will primarily benefit from these transactions if we experience significant mortgage loan defaults. We completed six and five STACR debt note transactions during the nine months ended September 30, 2015 and the nine months ended September 30, 2014, respectively. We completed six and two ACIS transactions during the nine months ended September 30, 2015 and the nine months ended September 30, 2014, respectively. We also have credit enhancements protecting our multifamily mortgage portfolio. The most prevalent type is subordination, primarily through our K Certificates. Through subordination, we mitigate our credit risk exposure by structuring our securities to sell the expected credit risk to private investors who purchase the subordinate tranches. We also have credit protection for certain mortgage loans on our consolidated balance sheets that are covered by insurance or partial guarantees issued by federal agencies (such as FHA, VA, and USDA). The total UPB of these mortgage loans was $3.3 billion and $3.6 billion as of September 30, 2015 and December 31, 2014, respectively. Non-Cash Investing and Financing Activities We acquired $189.0 billion and $137.1 billion of mortgage loans held-for-investment in exchange for the issuance of debt securities of consolidated trusts in guarantor swap transactions during the nine months ended September 30, 2015 and the nine months ended September 30, 2014, respectively. These guarantor swap transactions during the nine months ended September 30, 2015 included approximately $7.6 billion of mortgage loans received from sellers to satisfy advances that were recorded in other assets on our condensed consolidated balance sheets.

Impaired Mortgage Loans

Impaired Mortgage Loans	9 Months Ended
	Sep. 30, 2015
Loan and Lease Receivables, Impaired [Abstract]
IMPAIRED MORTGAGE LOANS	NOTE 5: IMPAIRED MORTGAGE LOANS Individually Impaired Mortgage Loans Individually impaired single-family mortgage loans include TDRs, as well as mortgage loans acquired under our financial guarantees with deteriorated credit quality. Individually impaired multifamily mortgage loans include TDRs, mortgage loans three monthly payments or more past due, and mortgage loans that are impaired based on management judgment. Total loan loss reserves consist of a specific allowance related to individually impaired mortgage loans, and a general reserve for other probable incurred losses. Our recorded investment in individually impaired mortgage loans and the related specific allowance are summarized in the table below by product class (for single-family mortgage loans). Table 5.1 — Individually Impaired Mortgage Loans Balance at September 30, 2015 For the Three Months Ended September 30, 2015 For the Nine Months Ended September 30, 2015 UPB Recorded Investment Associated Allowance Net Investment Average Recorded Investment Interest Income Recognized Interest Income Recognized On Cash Basis (1) Average Recorded Investment Interest Income Recognized Interest Income Recognized On Cash Basis (1) (in millions) Single-family — With no specific allowance recorded: (2) 20 and 30-year or more, amortizing fixed-rate $ 4,583 $ 3,390 N/A $ 3,390 $ 3,415 $ 100 $ 2 $ 3,265 $ 288 $ 9 15-year amortizing fixed-rate 45 37 N/A 37 38 2 — 42 6 — Adjustable-rate 137 133 N/A 133 135 1 — 84 2 — Alt-A, interest-only, and option ARM 1,158 840 N/A 840 844 20 — 781 59 2 Total with no specific allowance recorded 5,923 4,400 N/A 4,400 4,432 123 2 4,172 355 11 With specific allowance recorded: (3) 20 and 30-year or more, amortizing fixed-rate 74,152 72,351 $ (11,882 ) 60,469 72,585 627 67 74,209 1,898 242 15-year amortizing fixed-rate 1,001 1,004 (22 ) 982 989 11 2 1,056 35 8 Adjustable-rate 591 585 (32 ) 553 579 4 1 676 14 3 Alt-A, interest-only, and option ARM 14,959 14,385 (2,911 ) 11,474 14,509 100 11 15,201 305 44 Total with specific allowance recorded 90,703 88,325 (14,847 ) 73,478 88,662 742 81 91,142 2,252 297 Combined single-family: 20 and 30-year or more, amortizing fixed-rate 78,735 75,741 (11,882 ) 63,859 76,000 727 69 77,474 2,186 251 15-year amortizing fixed-rate 1,046 1,041 (22 ) 1,019 1,027 13 2 1,098 41 8 Adjustable-rate 728 718 (32 ) 686 714 5 1 760 16 3 Alt-A, interest-only, and option ARM 16,117 15,225 (2,911 ) 12,314 15,353 120 11 15,982 364 46 Total single-family $ 96,626 $ 92,725 $ (14,847 ) $ 77,878 $ 93,094 $ 865 $ 83 $ 95,314 $ 2,607 $ 308 Multifamily — With no specific allowance recorded (4) $ 399 $ 391 N/A $ 391 $ 423 $ 6 $ 3 $ 635 $ 20 $ 7 With specific allowance recorded 182 177 $ (24 ) 153 197 2 1 261 7 5 Total multifamily $ 581 $ 568 $ (24 ) $ 544 $ 620 $ 8 $ 4 $ 896 $ 27 $ 12 Total single-family and multifamily $ 97,207 $ 93,293 $ (14,871 ) $ 78,422 $ 93,714 $ 873 $ 87 $ 96,210 $ 2,634 $ 320 Balance at December 31, 2014 For the Three Months Ended September 30, 2014 For the Nine Months Ended September 30, 2014 UPB Recorded Investment Associated Allowance Net Investment Average Recorded Investment Interest Income Recognized Interest Income Recognized On Cash Basis (1) Average Recorded Investment Interest Income Recognized Interest Income Recognized On Cash Basis (1) (in millions) Single-family — With no specific allowance recorded: (2) 20 and 30-year or more, amortizing fixed-rate $ 6,041 $ 4,007 N/A $ 4,007 $ 3,941 $ 105 $ 12 $ 3,618 $ 277 $ 27 15-year amortizing fixed-rate 63 44 N/A 44 45 3 — 37 7 1 Adjustable rate 27 22 N/A 22 22 — — 15 1 — Alt-A, interest-only, and option ARM 1,717 1,168 N/A 1,168 1,151 22 2 1,119 60 4 Total with no specific allowance recorded 7,848 5,241 N/A 5,241 5,159 130 14 4,789 345 32 With specific allowance recorded: (3) 20 and 30-year or more, amortizing fixed-rate 77,798 76,708 $ (14,051 ) 62,657 76,001 588 82 75,562 1,760 213 15-year amortizing fixed-rate 1,226 1,233 (40 ) 1,193 1,225 13 3 1,255 41 7 Adjustable rate 868 866 (65 ) 801 857 5 2 891 17 4 Alt-A, interest-only, and option ARM 16,734 16,335 (3,681 ) 12,654 16,410 95 19 16,531 286 46 Total with specific allowance recorded 96,626 95,142 (17,837 ) 77,305 94,493 701 106 94,239 2,104 270 Combined single-family: 20 and 30-year or more, amortizing fixed-rate 83,839 80,715 (14,051 ) 66,664 79,942 693 94 79,180 2,037 240 15-year amortizing fixed-rate 1,289 1,277 (40 ) 1,237 1,270 16 3 1,292 48 8 Adjustable rate 895 888 (65 ) 823 879 5 2 906 18 4 Alt-A, interest-only, and option ARM 18,451 17,503 (3,681 ) 13,822 17,561 117 21 17,650 346 50 Total single-family $ 104,474 $ 100,383 $ (17,837 ) $ 82,546 $ 99,652 $ 831 $ 120 $ 99,028 $ 2,449 $ 302 Multifamily — With no specific allowance recorded (4) $ 440 $ 431 N/A $ 431 $ 526 $ 8 $ 2 $ 656 $ 24 $ 7 With specific allowance recorded 480 471 $ (52 ) 419 474 6 4 521 19 13 Total multifamily $ 920 $ 902 $ (52 ) $ 850 $ 1,000 $ 14 $ 6 $ 1,177 $ 43 $ 20 Total single-family and multifamily $ 105,394 $ 101,285 $ (17,889 ) $ 83,396 $ 100,652 $ 845 $ 126 $ 100,205 $ 2,492 $ 322 (1) Consists of income recognized during the period related to mortgage loans on non-accrual status. (2) Individually impaired single-family mortgage loans with no specific allowance primarily represent mortgage loans removed from PC pools and accounted for in accordance with the accounting guidance for loans and debt securities acquired with deteriorated credit quality that have not experienced further deterioration. (3) Consists primarily of mortgage loans classified as TDRs. (4) Individually impaired multifamily mortgage loans with no specific allowance primarily represent those mortgage loans for which the collateral value is sufficiently in excess of the mortgage loan balance to result in recovery of the entire recorded investment if the property were foreclosed upon or otherwise subject to disposition. Mortgage Loan Performance The table below presents the recorded investment of our single-family and multifamily mortgage loans, held-for-investment, by payment status. Table 5.2 — Payment Status of Mortgage Loans September 30, 2015 Current One Month Past Due Two Months Past Due Three Months or More Past Due, or in Foreclosure (1) Total Non-accrual (in millions) Single-family: 20 and 30-year or more, amortizing fixed-rate $ 1,265,447 $ 16,770 $ 5,151 $ 13,098 $ 1,300,466 $ 13,095 15-year amortizing fixed-rate 284,626 965 185 345 286,121 345 Adjustable-rate 65,206 393 94 257 65,950 257 Alt-A, interest-only, and option ARM 47,027 2,098 777 2,767 52,669 2,765 Total single-family 1,662,306 20,226 6,207 16,467 1,705,206 16,462 Total multifamily 33,227 — — — 33,227 242 Total single-family and multifamily $ 1,695,533 $ 20,226 $ 6,207 $ 16,467 $ 1,738,433 $ 16,704 December 31, 2014 Current One Month Past Due Two Months Past Due Three Months or More Past Due, or in Foreclosure (1) Total Non-accrual (in millions) Single-family: 20 and 30-year or more, amortizing fixed-rate $ 1,207,826 $ 17,516 $ 5,817 $ 23,436 $ 1,254,595 $ 23,433 15-year amortizing fixed-rate 280,629 1,010 216 682 282,537 682 Adjustable-rate 66,737 406 118 612 67,873 612 Alt-A, interest-only, and option ARM 53,251 2,368 948 7,048 63,615 7,045 Total single-family 1,608,443 21,300 7,099 31,778 1,668,620 31,772 Total multifamily 41,335 7 11 — 41,353 385 Total single-family and multifamily $ 1,649,778 $ 21,307 $ 7,110 $ 31,778 $ 1,709,973 $ 32,157 (1) Includes $7.5 billion and $17.9 billion of mortgage loans that were in the process of foreclosure as of September 30, 2015 and December 31, 2014 , respectively. The table below summarizes the delinquency rates of mortgage loans within our single-family credit guarantee and multifamily mortgage portfolios. Table 5.3 — Delinquency Rates September 30, 2015 December 31, 2014 Single-family: (1) Non-credit-enhanced portfolio Serious delinquency rate 1.36 % 1.74 % Total number of seriously delinquent mortgage loans 111,964 150,300 Credit-enhanced portfolio: (2) Primary mortgage insurance: Serious delinquency rate 2.26 % 3.10 % Total number of seriously delinquent mortgage loans 29,805 38,595 Other credit protection: (3) Serious delinquency rate 0.67 % 1.21 % Total number of seriously delinquent mortgage loans 9,762 12,175 Total single-family: Serious delinquency rate 1.41 % 1.88 % Total number of seriously delinquent mortgage loans 150,564 200,069 Multifamily: (4) Non-credit-enhanced portfolio: Delinquency rate — % 0.02 % UPB of delinquent mortgage loans (in millions) $ — $ 11 Credit-enhanced portfolio: Delinquency rate 0.02 % 0.05 % UPB of delinquent mortgage loans (in millions) $ 21 $ 44 Total Multifamily: Delinquency rate 0.01 % 0.04 % UPB of delinquent mortgage loans (in millions) $ 21 $ 55 (1) Serious delinquencies on single-family mortgage loans underlying certain REMICs and Other Structured Securities, Other Guarantee Transactions, and other guarantee commitments may be reported on a different schedule due to variances in industry practice. (2) The credit enhanced categories are not mutually exclusive as a single mortgage loan may be covered by both primary mortgage insurance and other credit protection. (3) Consists of single-family mortgage loans covered by financial arrangements (other than primary mortgage insurance) that are designed to reduce our credit risk exposure. See " Table 4.6 — Recourse and Other Forms of Credit Protection " for more information. (4) Multifamily delinquency performance is based on UPB of mortgage loans that are two monthly payments or more past due or those in the process of foreclosure and includes multifamily Other Guarantee Transactions (e.g., K Certificates). Troubled Debt Restructurings Single-Family TDRs During both the three and nine months ended September 30, 2015 , approximately 43% of completed single-family mortgage loan modifications that were classified as TDRs involved interest rate reductions and, in certain cases, term extensions, and approximately 16% involved principal forbearance in addition to interest rate reductions and, in certain cases, term extensions. During the three and nine months ended September 30, 2015 , the average term extension was 185 months and 191 months, respectively, and the average interest rate reduction was 0.9% in both periods on completed single-family mortgage loan modifications classified as TDRs. TDR Activity and Performance The table below presents the volume of single-family and multifamily mortgage loans that were newly classified as TDRs during the periods presented, based on the original category of the mortgage loan before the mortgage loan was classified as a TDR. A mortgage loan classified as a TDR in one period may be subject to further action (such as a modification or remodification) in a subsequent period. In such cases, the subsequent action would not be reflected in the table below since the mortgage loan would already have been classified as a TDR. Table 5.4 — TDR Activity, by Segment Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Number of Mortgage Loans Post-TDR Recorded Investment Number of Mortgage Loans Post-TDR Recorded Investment Number of Mortgage Loans Post-TDR Recorded Investment Number of Mortgage Loans Post-TDR Recorded Investment (dollars in millions) Single-family: (1) 20 and 30-year or more, amortizing fixed-rate 10,899 $ 1,530 17,194 $ 2,518 35,922 $ 5,121 52,356 $ 7,863 15-year amortizing fixed-rate 1,428 102 1,931 139 4,483 327 5,278 394 Adjustable-rate 293 42 397 61 1,026 150 1,336 207 Alt-A, interest-only, and option ARM 941 167 2,070 418 3,455 642 7,206 1,472 Total Single-family 13,561 1,841 21,592 3,136 44,886 6,240 66,176 9,936 Multifamily — — — — 1 30 1 10 Total 13,561 $ 1,841 21,592 $ 3,136 44,887 $ 6,270 66,177 $ 9,946 (1) The pre-TDR recorded investment for single-family mortgage loans initially classified as TDR during the three and nine months ended September 30, 2015 was $1.8 billion and $6.2 billion , respectively, compared to $3.1 billion and $9.9 billion during the three and nine months ended September 30, 2014 , respectively. The table below presents the volume of our TDR modifications that experienced payment defaults (i.e., mortgage loans that became two months delinquent or completed a loss event) during the applicable periods and had completed a modification during the year preceding the payment default. The table presents mortgage loans based on their original product category before modification and excludes mortgage loans subject to other loss mitigation activity. Substantially all of our completed single-family mortgage loan modifications classified as a TDR during the nine months ended September 30, 2015 resulted in a modified loan with a fixed interest rate. However, many of these fixed-rate mortgage loans include provisions for the reduced interest rates to remain fixed for the first five years of the modification and then increase at a rate of up to one percent per year until the interest rate has been adjusted to the market rate that was in effect at the time of the modification. Table 5.5 — Payment Defaults of Completed TDR Modifications, by Segment (1) Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Number of Mortgage Loans Post-TDR Recorded Investment (2) Number of Mortgage Loans Post-TDR Recorded Investment (2) Number of Mortgage Loans Post-TDR Recorded Investment (2) Number of Mortgage Loans Post-TDR Recorded Investment (2) (dollars in millions) Single-family: 20 and 30-year or more, amortizing fixed-rate 4,919 $ 787 5,190 $ 922 13,692 $ 2,278 13,814 $ 2,483 15-year amortizing fixed-rate 227 17 170 16 664 54 461 45 Adjustable-rate 93 15 88 15 243 41 250 46 Alt-A, interest-only, and option ARM 506 109 604 138 1,464 337 1,778 428 Total single-family 5,745 $ 928 6,052 $ 1,091 16,063 $ 2,710 16,303 $ 3,002 Multifamily — $ — — $ — — $ — — $ — (1) Represents TDR mortgage loans that experienced a payment default during the period and had completed a modification during the year preceding the payment default. (2) Represents the recorded investment at the end of the period in which the mortgage loan was modified and does not represent the recorded investment as of September 30. In addition to modifications, mortgage loans may be initially classified as TDRs as a result of other loss mitigation activities (i.e., repayment plans, forbearance agreements, or modification trial periods). During the nine months ended September 30, 2015 and the nine months ended September 30, 2014 , 7,280 and 6,779 , respectively, of such mortgage loans (with a post-TDR recorded investment of $0.9 billion and $1.0 billion , respectively) experienced a payment default within a year after the loss mitigation activity occurred. Mortgage loans may also be initially classified as TDRs because the borrowers’ debts were discharged in Chapter 7 bankruptcy (and the mortgage loan was not already classified as a TDR for other reasons). During the nine months ended September 30, 2015 and the nine months ended September 30, 2014 , 1,821 and 3,027 , respectively, of such mortgage loans (with a post-TDR recorded investment of $0.2 billion and $0.5 billion , respectively) experienced a payment default within a year after the borrowers' bankruptcy.

Real Estate Owned

Real Estate Owned	9 Months Ended
	Sep. 30, 2015
Repossessed Assets [Abstract]
REAL ESTATE OWNED	NOTE 6: REAL ESTATE OWNED We obtain REO properties when we are the highest bidder at foreclosure sales of properties that collateralize single-family and multifamily mortgage loans owned by us or when a delinquent borrower chooses to transfer the mortgaged property to us in lieu of going through the foreclosure process (i.e., deed in lieu of foreclosure). See “NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES” in our 2014 Annual Report for a discussion of our significant accounting policies for REO. The table below provides a summary of the change in the carrying value of our combined single-family and multifamily REO balances. For the periods presented in the table below, the weighted average holding period for our disposed properties was less than one year. Table 6.1 — REO Three Months Ended Nine Months Ended 2015 2014 2015 2014 (in millions) Beginning balance — REO $ 2,034 $ 3,696 $ 2,684 $ 4,602 Additions 524 815 1,769 3,293 Dispositions (696 ) (1,475 ) (2,591 ) (4,859 ) Ending balance — REO 1,862 3,036 1,862 3,036 Beginning balance, valuation allowance (56 ) (19 ) (126 ) (51 ) Change in valuation allowance (11 ) (106 ) 59 (74 ) Ending balance, valuation allowance (67 ) (125 ) (67 ) (125 ) Ending balance — REO, net $ 1,795 $ 2,911 $ 1,795 $ 2,911 The REO balance, net associated with single-family properties was $1.8 billion and $2.6 billion at September 30, 2015 and December 31, 2014 , respectively, and the balance associated with multifamily properties was $8 million and $0 at September 30, 2015 and December 31, 2014 , respectively. Our single-family REO inventory consisted of 17,780 properties and 25,768 properties at September 30, 2015 and December 31, 2014 , respectively. Non-Cash Investing and Financing Activities REO property acquisitions as a result of the derecognition of mortgage loans held on our condensed consolidated balance sheets upon foreclosure of the underlying collateral or deed in lieu of foreclosure represent non-cash transfers. During the nine months ended September 30, 2015 and the nine months ended September 30, 2014, we had transfers of $1.6 billion and $3.1 billion , respectively, from mortgage loans to REO.

Investments in Securities

Investments in Securities	9 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
INVESTMENTS IN SECURITIES	NOTE 7: INVESTMENTS IN SECURITIES The table below summarizes amortized cost, estimated fair values, and corresponding gross unrealized gains and gross unrealized losses for available-for-sale securities by major security type. At September 30, 2015 and December 31, 2014, all available-for-sale securities were mortgage-related securities. Table 7.1 — Available-For-Sale Securities Gross Unrealized Losses September 30, 2015 Amortized Cost Gross Unrealized Gains Other-Than-Temporary Impairment (1) Temporary Impairment (2) Fair Value (in millions) Available-for-sale securities: Freddie Mac $ 34,130 $ 1,480 $ — $ (33 ) $ 35,577 Fannie Mae 7,544 313 — (21 ) 7,836 Ginnie Mae 159 14 — — 173 CMBS 13,907 669 — — 14,576 Subprime 13,501 702 (321 ) (73 ) 13,809 Option ARM 3,630 326 (68 ) (6 ) 3,882 Alt-A and other 3,158 513 (20 ) (5 ) 3,646 Obligations of states and political subdivisions 1,458 23 — (1 ) 1,480 Manufactured housing 504 91 (1 ) — 594 Total available-for-sale securities $ 77,991 $ 4,131 $ (410 ) $ (139 ) $ 81,573 December 31, 2014 Available-for-sale securities: Freddie Mac $ 37,710 $ 1,435 $ — $ (46 ) $ 39,099 Fannie Mae 10,860 463 — (10 ) 11,313 Ginnie Mae 183 16 — — 199 CMBS 20,988 890 (2 ) (54 ) 21,822 Subprime 20,210 989 (518 ) (92 ) 20,589 Option ARM 5,460 372 (179 ) (4 ) 5,649 Alt-A and other 4,500 578 (29 ) (6 ) 5,043 Obligations of states and political subdivisions 2,166 34 — (2 ) 2,198 Manufactured housing 556 84 (2 ) — 638 Total available-for-sale securities $ 102,633 $ 4,861 $ (730 ) $ (214 ) $ 106,550 (1) Represents the gross unrealized losses for securities for which we have previously recognized other-than-temporary impairments in earnings. (2) Represents the gross unrealized losses for securities for which we have not previously recognized other-than-temporary impairments in earnings. Available-For-Sale Securities in a Gross Unrealized Loss Position The table below shows the fair value of available-for-sale securities in a gross unrealized loss position, and whether they have been in that position less than 12 months, or 12 months or greater. Table 7.2 — Available-For-Sale Securities in a Gross Unrealized Loss Position Less than 12 Months 12 Months or Greater September 30, 2015 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in millions) Available-for-sale securities: Freddie Mac $ 2,547 $ (8 ) $ 1,188 $ (25 ) Fannie Mae 3,183 (19 ) 335 (2 ) Ginnie Mae — — 58 — CMBS 175 — 152 — Subprime 1,767 (18 ) 4,607 (376 ) Option ARM 348 (7 ) 691 (67 ) Alt-A and other 128 (1 ) 379 (24 ) Obligations of states and political subdivisions 9 — 12 (1 ) Manufactured housing — — 14 (1 ) Total available-for-sale securities in a gross unrealized loss position $ 8,157 $ (53 ) $ 7,436 $ (496 ) December 31, 2014 Available-for-sale securities: Freddie Mac $ 2,531 $ (14 ) $ 936 $ (32 ) Fannie Mae 2,693 (9 ) 5 (1 ) Ginnie Mae 66 — — — CMBS 184 (5 ) 1,149 (51 ) Subprime 286 (3 ) 6,533 (607 ) Option ARM 77 — 1,490 (183 ) Alt-A and other 185 (5 ) 499 (30 ) Obligations of states and political subdivisions 48 — 28 (2 ) Manufactured housing 42 — 15 (2 ) Total available-for-sale securities in a gross unrealized loss position $ 6,112 $ (36 ) $ 10,655 $ (908 ) At September 30, 2015 , total gross unrealized losses on available-for-sale securities were $0.5 billion . The gross unrealized losses relate to 332 individual lots representing 299 separate securities. We purchase multiple lots of individual securities at different times and at different costs. We determine gross unrealized gains and gross unrealized losses by specifically evaluating investment positions at the lot level; therefore, some of the lots we hold for an individual security may be in an unrealized gain position while other lots for that security may be in an unrealized loss position, depending upon the amortized cost of the specific lot. Impairment Recognition on Investments in Securities The table below presents the modeled attributes, including default rates, prepayment rates, and severities, without regard to subordination, that are used to determine whether our interests in certain available-for-sale non-agency mortgage-related securities will experience a cash shortfall. Table 7.3 — Significant Modeled Attributes for Certain Available-For-Sale Non-Agency Mortgage-Related Securities September 30, 2015 Subprime Option ARM Alt-A (dollars in millions) UPB $ 18,539 $ 5,604 $ 3,066 Weighted average collateral defaults (1) 44 % 28 % 23 % Weighted average collateral severities (2) 65 % 62 % 48 % Weighted average voluntary prepayment rates (3) 3 % 9 % 10 % Average credit enhancements (4) 7 % (1 )% 1 % (1) The expected cumulative default rate is expressed as a percentage of the current collateral UPB. (2) The expected average loss given default is calculated as the ratio of cumulative loss over cumulative default for each security. (3) The security’s voluntary prepayment rate represents the average of the monthly voluntary prepayment rate weighted by the security’s outstanding UPB. (4) Positive values reflect the amount of subordination and other financial support (excluding credit enhancement provided by bond insurance) that will incur losses in the securitization structure before any losses are allocated to securities that we own. Percentage generally calculated based on the total UPB of securities subordinate to the securities we own divided by the total UPB of all of the securities issued by the trust (excluding notional balances). Negative values are shown when unallocated collateral losses will be allocated to the securities that we own in excess of current remaining credit enhancement, if any. The unallocated collateral losses have been considered in our assessment of other-than-temporary impairment. Other-Than-Temporary Impairments on Available-for-Sale Securities The table below summarizes our net impairment of available-for-sale securities recognized in earnings by security type. Table 7.4 — Net Impairment of Available-For-Sale Securities Recognized in Earnings Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Available-for-sale securities: (1) CMBS $ — $ — $ (29 ) $ — Subprime (34 ) (125 ) (123 ) (582 ) Option ARM (19 ) (39 ) (88 ) (72 ) Alt-A and other (1 ) (2 ) (5 ) (33 ) Total net impairment of available-for-sale securities recognized in earnings $ (54 ) $ (166 ) $ (245 ) $ (687 ) (1) Includes $38 million and $203 million of other-than-temporary impairments recognized in earnings during the three and nine months ended September 30, 2015, respectively, compared to $132 million and $598 million during the three and nine months ended September 30, 2014, respectively, as we had the intent to sell the related securities before recovery of their amortized cost basis. The table below presents the changes in the unrealized credit-related other-than-temporary impairment component of the amortized cost related to available-for-sale securities that we have written down for other-than-temporary impairment and for which the credit component of the loss has been recognized in earnings. Table 7.5 — Other-Than-Temporary Impairments Related to Credit Losses on Available-For-Sale Securities Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Beginning balance — remaining credit losses on available-for-sale securities where other-than-temporary impairments were recognized in earnings $ 5,679 $ 11,118 $ 6,798 $ 14,463 Additions: Amounts related to credit losses for which an other-than-temporary impairment was previously recognized 16 34 42 89 Reductions: Amounts related to securities which were sold, written off, or matured (21 ) (807 ) (108 ) (1,141 ) Amounts for which we intend to sell the security or it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis (60 ) (1,949 ) (951 ) (4,736 ) Amounts related to amortization resulting from significant increases in cash flows expected to be collected and/or due to the passage of time that are recognized over the remaining life of the security (79 ) (110 ) (246 ) (389 ) Ending balance — remaining credit losses on available-for-sale securities where other-than-temporary impairments were recognized in earnings (1) $ 5,535 $ 8,286 $ 5,535 $ 8,286 (1) Excludes other-than-temporary impairments on securities that we intend to sell or it is more likely than not that we will be required to sell before recovery of the unrealized losses. Realized Gains and Losses on Sales of Available-For-Sale Securities The table below illustrates the gross realized gains and gross realized losses from the sale of available-for-sale securities. Table 7.6 — Gross Realized Gains and Gross Realized Losses on Sales of Available-For-Sale Securities Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Gross realized gains $ 324 $ 273 $ 1,177 $ 1,394 Gross realized losses (12 ) (166 ) (23 ) (182 ) Net realized gains (losses) $ 312 $ 107 $ 1,154 $ 1,212 Maturities of Available-For-Sale Securities The table below summarizes the remaining contractual maturities of available-for-sale securities. Table 7.7 — Contractual Maturities of Available-For-Sale Securities As of September 30, 2015 After One Year Through Five Years After Five Years Through Ten Years Total Amortized Cost Total Fair Value One Year or Less After Ten Years Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value (in millions) Available-for-sale securities: Freddie Mac $ 34,130 $ 35,577 $ — $ — $ 79 $ 79 $ 730 $ 731 $ 33,321 $ 34,767 Fannie Mae 7,544 7,836 3 3 19 20 80 90 7,442 7,723 Ginnie Mae 159 173 — — 2 2 20 24 137 147 CMBS 13,907 14,576 — — 315 325 8 8 13,584 14,243 Subprime 13,501 13,809 — — — — — — 13,501 13,809 Option ARM 3,630 3,882 — — — — — — 3,630 3,882 Alt-A and other 3,158 3,646 1 1 16 16 7 8 3,134 3,621 Obligations of states and political subdivisions 1,458 1,480 — — 34 36 65 68 1,359 1,376 Manufactured housing 504 594 — — 1 — 7 10 496 584 Total available-for-sale securities $ 77,991 $ 81,573 $ 4 $ 4 $ 466 $ 478 $ 917 $ 939 $ 76,604 $ 80,152 Trading Securities The table below summarizes the estimated fair values by major security type for trading securities. Our trading securities mainly consist of Treasury securities, agency fixed-rate and variable-rate pass-through mortgage-related securities, and agency REMICs, including inverse floating rate, interest-only and principal-only securities. Table 7.8 — Trading Securities September 30, 2015 December 31, 2014 (in millions) Mortgage-related securities: Freddie Mac $ 16,324 $ 17,469 Fannie Mae 6,887 6,099 Ginnie Mae 290 16 Other 147 171 Total mortgage-related securities 23,648 23,755 U.S. Treasury securities 12,158 6,682 Total fair value of trading securities $ 35,806 $ 30,437 As of September 30, 2015 , our agency securities classified as trading were generally in an unrealized gain position and therefore we expect to recognize losses on these securities as they approach maturity and move closer to par. During the three and nine months ended September 30, 2015 , we recorded net unrealized gains (losses) on trading securities held at those dates of $(63) million and $(349) million , respectively. During the three and nine months ended September 30, 2014, we recorded net unrealized gains (losses) on trading securities held at those dates of $(142) million and $(141) million , respectively. Non-Cash Investing and Financing Activities From time to time, we contribute PCs, single-class REMICs and Other Structured Securities held in our mortgage-related investments portfolio to non-consolidated multiclass REMIC and Other Structured Securities trusts in exchange for beneficial interests in those same multiclass REMIC and Other Structured Securities trusts. We account for this type of transaction as the acquisition of investment securities and the issuance of debt securities of consolidated trusts. During the nine months ended September 30, 2015 and September 30, 2014, we received investment securities as consideration for the issuance of debt securities of consolidated trusts of $0.0 billion and $1.2 billion respectively.

Debt Securities and Subordinate

Debt Securities and Subordinated Borrowings	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
DEBT SECURITIES AND SUBORDINATED BORROWINGS	NOTE 8: DEBT SECURITIES AND SUBORDINATED BORROWINGS Debt securities that we issue are classified on our consolidated balance sheets as either debt securities of consolidated trusts held by third parties or other debt. We issue other debt to fund our operations. Under the Purchase Agreement, without the prior written consent of Treasury, we may not incur indebtedness that would result in the par value of our aggregate indebtedness exceeding 120% of the amount of mortgage assets we are allowed to own on December 31 of the immediately preceding calendar year. Because of this debt limit, we may be restricted in the amount of debt we are allowed to issue to fund our operations. Under the Purchase Agreement, the amount of our “indebtedness” is determined without giving effect to the January 1, 2010 change in the accounting guidance related to transfers of financial assets and consolidation of VIEs. Therefore, “indebtedness” does not include debt securities of consolidated trusts held by third parties. We also cannot become liable for any subordinated indebtedness without the prior consent of Treasury. See “NOTE 2: CONSERVATORSHIP AND RELATED MATTERS” for information regarding restrictions on the amount of mortgage-related securities that we may own. Our debt cap under the Purchase Agreement is $563.6 billion in 2015 and will decline to $479.0 billion on January 1, 2016. As of September 30, 2015 , our aggregate indebtedness was $411.8 billion . Our aggregate indebtedness is calculated as the par value of other short- and long-term debt. In the tables below, the categories of short-term debt (due within one year) and long-term debt (due after one year) are based on the original contractual maturity of the debt instruments classified as other debt. Other Debt The table below summarizes the balances and effective interest rates for other debt. We had no balances in securities sold under agreements to repurchase at either September 30, 2015 or December 31, 2014. Table 8.1 — Other Debt September 30, 2015 December 31, 2014 Par Value Carrying Amount (1) Weighted Average Effective Rate (2) Par Value Carrying Amount (1) Weighted Average Effective Rate (2) (dollars in millions) Other short-term debt: Reference Bills ® securities and other discount notes $ 104,484 $ 104,435 0.18 % $ 134,670 $ 134,619 0.12 % Medium-term notes 7,845 7,845 0.17 — — — Total other short-term debt $ 112,329 $ 112,280 0.18 $ 134,670 $ 134,619 0.12 Other long-term debt: Original maturities on or before December 31, 2015 $ 13,026 $ 13,025 1.73 % $ 58,841 $ 58,830 1.62 % 2016 59,500 59,599 2.11 72,504 72,696 1.88 2017 83,610 83,756 1.58 77,482 77,489 1.78 2018 46,224 46,250 1.53 30,850 30,823 1.67 2019 28,615 28,540 1.88 30,671 30,570 1.97 Thereafter 68,501 64,831 3.11 49,011 45,042 3.42 Total other long-term debt (3) 299,476 296,001 2.05 319,359 315,450 2.02 Total other debt $ 411,805 $ 408,281 $ 454,029 $ 450,069 (1) Represents par value, net of associated discounts or premiums, and hedge-related basis adjustments. Includes $7.4 billion and $5.8 billion at September 30, 2015 and December 31, 2014, respectively, of other long-term debt that represents the fair value of debt securities with the fair value option elected. (2) Represents the weighted average effective rate that remains constant over the life of the instrument, which includes the amortization of discounts or premiums, issuance costs, and hedge-related basis adjustments. (3) Balance, net for other long-term debt includes callable debt of $101.1 billion and $106.3 billion at September 30, 2015 and December 31, 2014, respectively, which gives us the option to call or not call debt for a variety of reasons that include managing the composition of liabilities or economic reasons. Debt Securities of Consolidated Trusts Held by Third Parties Debt securities of consolidated trusts held by third parties represents our liability to third parties that hold beneficial interests in our consolidated securitization trusts. Debt securities of consolidated trusts held by third parties are prepayable as the loans that collateralize the debt may prepay without penalty at any time. The table below summarizes the debt securities of consolidated trusts held by third parties based on underlying mortgage product type. Table 8.2 — Debt Securities of Consolidated Trusts Held by Third Parties September 30, 2015 December 31, 2014 Contractual Maturity UPB Carrying Amount Weighted Average Coupon (1) Contractual Maturity UPB Carrying Amount Weighted Average Coupon (1) (dollars in millions) (dollars in millions) Single-family: 30-year or more, fixed-rate (2) 2015 - 2053 $ 1,071,730 $ 1,103,502 3.91 % 2015 - 2053 $ 1,018,357 $ 1,047,302 4.04 % 20-year fixed-rate 2015 - 2035 73,369 75,611 3.63 2015 - 2035 71,545 73,764 3.74 15-year fixed-rate 2015 - 2030 271,722 278,285 3.03 2015 - 2030 266,117 272,538 3.13 Adjustable-rate 2015 - 2047 62,327 63,735 2.60 2015 - 2047 65,082 66,518 2.62 Interest-only 2026 - 2041 14,967 15,028 3.16 2026 - 2041 17,474 17,524 3.29 FHA/VA 2016 - 2044 1,040 1,060 5.39 2015 - 2044 1,226 1,250 5.42 Total single-family 1,495,155 1,537,221 1,439,801 1,478,896 Multifamily (2) 2017 - 2028 1,737 1,887 4.78 2017 - 2019 524 577 4.93 Total debt securities of consolidated trusts held by third parties $ 1,496,892 $ 1,539,108 $ 1,440,325 $ 1,479,473 (1) The effective rate for debt securities of consolidated trusts held by third parties was 3.01% and 3.19% as of September 30, 2015 and December 31, 2014, respectively. (2) Carrying amount includes securities recorded at fair value.

Derivatives

Derivatives	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
DERIVATIVES	NOTE 9: DERIVATIVES Use of Derivatives We use derivatives primarily to manage the interest rate risk associated with our investments in financial assets and related liabilities. When we use derivatives to mitigate our exposures, we consider a number of factors, including cost, exposure to counterparty risk, and our overall risk management strategy. We classify derivatives into three categories: (a) exchange-traded derivatives; (b) cleared derivatives; and (c) OTC derivatives. Exchange-traded derivatives include standardized interest-rate futures contracts and options on futures contracts. Cleared derivatives refer to those interest-rate swaps that the U.S. Commodity Futures Trading Commission has determined are subject to the central clearing requirement of the Dodd-Frank Act. OTC derivatives refer to those derivatives that are neither exchange-traded derivatives nor cleared derivatives. Types of Derivatives We principally use the following types of derivatives: • LIBOR-based interest-rate swaps; • LIBOR- and Treasury-based options (including swaptions); and • LIBOR- and Treasury-based exchange-traded futures. In addition to swaps, futures, and purchased options, our derivative positions include written options and swaptions, commitments, swap guarantees, and credit derivatives. For a discussion of our significant accounting policies related to derivatives, see “NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES — Derivatives” in our 2014 Annual Report. Derivative Assets and Liabilities at Fair Value The table below presents the notional value and fair value of derivatives reported on our consolidated balance sheets. Table 9.1 — Derivative Assets and Liabilities at Fair Value September 30, 2015 December 31, 2014 Notional or Contractual Amount Derivatives at Fair Value Notional or Contractual Amount Derivatives at Fair Value Assets Liabilities Assets Liabilities (in millions) Total derivative portfolio Interest-rate swaps: Receive-fixed $ 210,020 $ 5,605 $ (21 ) $ 205,219 $ 5,243 $ (487 ) Pay-fixed 213,522 22 (14,829 ) 213,325 408 (12,829 ) Basis (floating to floating) 300 2 — 300 2 — Total interest-rate swaps 423,842 5,629 (14,850 ) 418,844 5,653 (13,316 ) Option-based: Call swaptions Purchased 50,375 3,693 — 56,390 3,315 — Written 3,875 — (130 ) 10,660 — (90 ) Put Swaptions Purchased 17,800 335 — 22,125 179 — Written 8,775 — (13 ) 3,560 — (9 ) Other option-based derivatives (1) 12,610 813 — 19,733 730 (28 ) Total option-based 93,435 4,841 (143 ) 112,468 4,224 (127 ) Futures 65,000 — — 40,263 — — Commitments 53,625 103 (178 ) 27,054 40 (79 ) Credit derivatives 4,714 19 (10 ) 5,207 27 (11 ) Swap guarantee derivatives 3,081 — (25 ) 3,204 — (27 ) Total derivatives not designated as hedging instruments 643,697 10,592 (15,206 ) 607,040 9,944 (13,560 ) Derivative interest receivable (payable) 822 (1,429 ) 817 (1,500 ) Netting adjustments (2) (10,809 ) 14,965 (9,939 ) 13,097 Total derivative portfolio, net $ 643,697 $ 605 $ (1,670 ) $ 607,040 $ 822 $ (1,963 ) (1) Primarily includes purchased interest-rate caps and floors and options on Treasury futures. (2) Represents counterparty netting and cash collateral netting. Net cash collateral posted was $4.2 billion and $3.2 billion at September 30, 2015 and December 31, 2014, respectively. The carrying value of our derivatives on our consolidated balance sheets is equal to their fair value, including net derivative interest receivable or payable and net trade/settle receivable or payable, and is net of cash collateral held or posted, where allowable. Derivatives in a net asset position are reported as derivative assets, net. Similarly, derivatives in a net liability position are reported as derivative liabilities, net. See “NOTE 10: COLLATERAL AND OFFSETTING OF ASSETS AND LIABILITIES” for information related to our derivative counterparties and collateral held and posted. Gains and Losses on Derivatives The table below presents the gains and losses on derivatives, including the accrual of periodic cash settlements, reported in our consolidated statements of comprehensive income as derivate gains (losses). Table 9.2 — Gains and Losses on Derivatives Derivative Gains (Losses) Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Interest-rate swaps: Receive-fixed $ 1,845 $ (751 ) $ 1,563 $ 2,300 Pay-fixed (6,538 ) 568 (4,076 ) (5,804 ) Basis (floating to floating) — (1 ) (1 ) (1 ) Total interest-rate swaps (4,693 ) (184 ) (2,514 ) (3,505 ) Option based: Call swaptions Purchased 1,293 99 795 1,172 Written (49 ) 7 (40 ) (145 ) Put swaptions Purchased (259 ) (41 ) (194 ) (817 ) Written 47 — 70 — Other option-based derivatives (1) 139 13 91 134 Total option-based 1,171 78 722 344 Futures (2 ) (3 ) (13 ) (43 ) Commitments (114 ) 100 40 296 Credit derivatives 2 19 (36 ) (9 ) Swap guarantee derivatives 1 1 5 6 Other (1 ) (1 ) (5 ) (9 ) Subtotal (3,636 ) 10 (1,801 ) (2,920 ) Accrual of periodic settlements: Receive-fixed interest-rate swaps 647 726 1,948 2,343 Pay-fixed interest-rate swaps (1,183 ) (1,354 ) (3,588 ) (4,319 ) Other — 1 1 2 Total accrual of periodic settlements (536 ) (627 ) (1,639 ) (1,974 ) Total $ (4,172 ) $ (617 ) $ (3,440 ) $ (4,894 ) (1) Primarily includes purchased interest-rate caps and floors and options on Treasury futures. Hedge Designation of Derivatives As of September 30, 2015 and December 31, 2014, we did not have any derivatives in hedge accounting relationships; however, there are deferred net losses recorded in AOCI related to closed cash flow hedges. See “NOTE 11: STOCKHOLDERS’ EQUITY — Accumulated Other Comprehensive Income — Future Reclassifications from AOCI to Net Income Related to Closed Cash Flow Hedges ” for information about future reclassifications of deferred net losses related to closed cash flow hedges to net income.

Collateral and Offsetting of As

Collateral and Offsetting of Assets and Liabilities	9 Months Ended
	Sep. 30, 2015
Offsetting [Abstract]
COLLATERAL AND OFFSETTING OF ASSETS AND LIABILITIES	NOTE 10: COLLATERAL AND OFFSETTING OF ASSETS AND LIABILITIES Derivative Portfolio Derivative Counterparties Our use of cleared derivatives, exchange-traded derivatives, and OTC derivatives exposes us to institutional credit risk. The requirement that we post initial and variation margin in connection with cleared and exchange-traded derivatives, such as cleared interest-rate swaps and futures contracts, exposes us to institutional credit risk in the event that our clearing members or the financial clearinghouses fail to meet their obligations. The use of cleared and exchange-traded derivatives decreases our credit risk exposure to individual counterparties because a central counterparty is substituted for individual counterparties. However, our exposure to the clearinghouses and clearing members that administer our cleared transactions has increased and may become more concentrated over time. OTC derivatives expose us to the credit risk of individual counterparties because transactions are executed and settled between us and each counterparty, exposing us to potential losses if a counterparty fails to meet its obligations. Our use of interest rate swaps and option-based derivatives is subject to internal credit and legal reviews. On an ongoing basis, we review the credit fundamentals of all of our derivative counterparties, clearinghouses, and clearing members to confirm that they continue to meet our internal risk management standards. Master Netting and Collateral Agreements We use master netting and collateral agreements to reduce our credit risk exposure to our derivative counterparties for interest-rate swap and option-based derivatives. Master netting agreements provide for the netting of amounts receivable and payable from an individual counterparty, which reduces our exposure to a single counterparty in the event of default. On a daily basis, the market value of each counterparty’s derivatives outstanding is calculated to determine the amount of our net credit exposure, which is equal to derivatives in a net gain position by counterparty after giving consideration to collateral posted. Collateral posted by a derivative counterparty is typically in the form of cash, although U.S. Treasury securities and Freddie Mac mortgage-related securities may also be posted. In the event a counterparty defaults on its obligations under the derivatives agreement and the default is not remedied in the manner prescribed in the agreement, we have the right under the agreement to direct the custodian bank to transfer the collateral to us or to sell the collateral and transfer the proceeds to us. As of September 30, 2015 and December 31, 2014, all amounts of cash collateral related to derivatives with master netting and collateral agreements were offset against derivative assets, net or derivative liabilities, net, as applicable. Our net uncollateralized exposure to derivative counterparties for OTC interest-rate swap and option-based derivatives was $41 million and $174 million as of September 30, 2015 and December 31, 2014, respectively. In the event that all of our counterparties for these derivatives were to have defaulted simultaneously on September 30, 2015 , our maximum loss for accounting purposes after applying netting agreements and collateral on an individual counterparty basis would have been approximately $41 million . Three counterparties each accounted for greater than 10% and collectively accounted for 88% of our net uncollateralized exposure to derivative counterparties, excluding cleared and exchange-traded derivatives, commitments, swap guarantee derivatives, certain written options, and certain credit derivatives as of September 30, 2015 . All three of these counterparties, JP Morgan Chase Bank, N.A., Societe Generale, and Barclays Bank PLC, were rated “A-” or above using the lower of S&P’s or Moody’s rating stated in terms of the S&P equivalent as of September 30, 2015 . Beginning with contracts executed or modified on or after June 10, 2013, the types of interest-rate swaps that we use most frequently became subject to the central clearing requirement. We post initial and variation margin in connection with our cleared and exchange-traded derivatives. Our exposure to cleared and exchange-traded derivatives was $154 million and $128 million as of September 30, 2015 and December 31, 2014, respectively, which includes consideration of the cash collateral that has been posted for initial and variation margin. We net our exposure to cleared derivatives by clearinghouse and clearing member. Exchange-traded derivatives are settled on a daily basis through the payment of variation margin. For information about margin we have posted in connection with cleared and exchange-traded derivatives, see “— Collateral Pledged.” The table below displays information related to derivatives and securities purchased under agreements to resell on our consolidated balance sheets. Table 10.1 — Offsetting of Financial Assets and Liabilities September 30, 2015 Gross Amount Recognized Amount Offset in the Consolidated Balance Sheets Net Amount Presented in the Consolidated Balance Sheets (1) Gross Amount Not Offset in the Consolidated Balance Sheets (2) Net Amount (in millions) Assets: Derivatives: Over-the-counter interest-rate swaps and option-based derivatives $ 9,390 $ (9,061 ) $ 329 $ (288 ) $ 41 Cleared and exchange-traded derivatives 1,902 (1,748 ) 154 — 154 Other 122 — 122 — 122 Total derivatives 11,414 (10,809 ) 605 (288 ) 317 Securities purchased under agreements to resell 38,738 — 38,738 (38,738 ) — Total $ 50,152 $ (10,809 ) $ 39,343 $ (39,026 ) $ 317 Liabilities: Derivatives: Over-the-counter interest-rate swaps and option-based derivatives $ (10,254 ) $ 8,798 $ (1,456 ) $ 1,411 $ (45 ) Cleared and exchange-traded derivatives (6,168 ) 6,167 (1 ) — (1 ) Other (213 ) — (213 ) — (213 ) Total $ (16,635 ) $ 14,965 $ (1,670 ) $ 1,411 $ (259 ) December 31, 2014 Gross Amount Recognized Amount Offset in the Consolidated Balance Sheets Net Amount Presented in the Consolidated Balance Sheets (1) Gross Amount Not Offset in the Consolidated Balance Sheets (2) Net Amount (in millions) Assets: Derivatives: Over-the-counter interest-rate and option-based derivatives $ 10,315 $ (9,688 ) $ 627 $ (453 ) $ 174 Cleared and exchange-traded derivatives 379 (251 ) 128 — 128 Other 67 — 67 — 67 Total derivatives 10,761 (9,939 ) 822 (453 ) 369 Securities purchased under agreements to resell 51,903 — 51,903 (51,903 ) — Total $ 62,664 $ (9,939 ) $ 52,725 $ (52,356 ) $ 369 Liabilities: Derivatives: Over-the-counter interest-rate and option-based derivatives $ (10,666 ) $ 8,845 $ (1,821 ) $ 1,743 $ (78 ) Cleared and exchange-traded derivatives (4,277 ) 4,252 (25 ) — (25 ) Other (117 ) — (117 ) — (117 ) Total $ (15,060 ) $ 13,097 $ (1,963 ) $ 1,743 $ (220 ) (1) For derivatives, includes cash collateral posted or held in excess of exposure. (2) Does not include the fair value amount of non-cash collateral posted or held that exceeds the associated net asset or liability presented on the consolidated balance sheets. For cleared and exchange-traded derivatives, does not include non-cash collateral posted by us with an aggregate fair value of $2.8 billion and $2.3 billion as of September 30, 2015 and December 31, 2014, respectively. Collateral Pledged Collateral Pledged to Freddie Mac We had cash and cash equivalents pledged to us related to OTC derivative instruments of $1.2 billion and $2.1 billion as of September 30, 2015 and December 31, 2014, respectively. As of September 30, 2015 and December 31, 2014, we had $288 million and $453 million , respectively, of collateral in the form of securities pledged to and held by us related to OTC derivative instruments. Although it is our practice not to repledge assets held as collateral, a portion of the collateral may be repledged based on master netting agreements related to our derivative instruments. In addition, we had $1 million and $0 million of cash pledged to us related to cleared derivatives as of September 30, 2015 and December 31, 2014, respectively. Also, as of September 30, 2015 and December 31, 2014, we had $176 million and $0 million , respectively, of securities pledged to us for transactions involving securities purchased under agreements to resell that we had the right to repledge. From time to time we may obtain pledges of collateral from certain seller/servicers as additional security for certain of their obligations to us, including their obligations to repurchase mortgage loans sold to us in breach of representations and warranties. This collateral may, at our discretion, take the form of cash, cash equivalents, or agency securities. We did not hold any federal funds sold as of September 30, 2015 and December 31, 2014. Collateral Pledged by Freddie Mac We are required to pledge collateral for margin requirements with third-party custodians in connection with secured financings and derivative transactions with some counterparties. The amount of collateral pledged related to our derivative instruments is determined after giving consideration to our credit rating. The aggregate fair value of all OTC derivative instruments with credit-risk-related contingent features that were in a liability position on September 30, 2015 , was $2.4 billion for which we posted cash and non-cash collateral of $2.4 billion in the normal course of business. Since we were fully collateralized as of September 30, 2015 , we would not have been required to post additional collateral on that day if the credit-risk-related contingent features underlying these agreements were triggered. We also execute forward purchase and sale commitments of mortgage-related securities, including dollar roll transactions, that are treated as derivatives for accounting purposes and utilize the Mortgage Backed Securities Division of the Fixed Income Clearing Corporation (“MBSD/FICC”) as a clearinghouse. As a clearing member of the clearinghouse, we post margin to the MBSD/FICC and are exposed to the institutional credit risk of the organization. In the event a clearing member fails and causes losses to the MBSD/FICC clearing system, we could be subject to the loss of any or all of the margin that we have posted to the MBSD/FICC. Moreover, our exposure could exceed that amount, as members are generally required to guarantee the performance of other members on a pro rata basis. It is difficult to estimate our maximum exposure under these transactions, as this would require an assessment of transactions that we and other members of the MBSD/FICC may execute in the future. The table below summarizes all securities pledged as collateral by us, including assets that the secured party may repledge. Table 10.2 — Collateral in the Form of Securities Pledged September 30, 2015 December 31, 2014 (in millions) Securities pledged with the ability for the secured party to repledge: Debt securities of consolidated trusts held by third parties (1) $ 1,832 $ 2,539 Available-for-sale securities — 9 Trading securities 2,455 1,884 Total securities pledged $ 4,287 $ 4,432 (1) Represents PCs held by us in our Investments segment mortgage investments portfolio and pledged as collateral which are recorded as a reduction to debt securities of consolidated trusts held by third parties on our consolidated balance sheets. Securities Pledged with the Ability of the Secured Party to Repledge As of September 30, 2015 , we pledged securities with the ability of the secured party to repledge of $4.3 billion in connection with derivatives and securities transactions. As of December 31, 2014 , we pledged securities with the ability of the secured party to repledge of $4.4 billion in connection with derivatives and securities transactions. Cash Pledged As of September 30, 2015 , we pledged $5.7 billion of collateral in the form of cash and cash equivalents, of which $1.0 billion related to our OTC derivative agreements as we had $2.4 billion of such derivatives in a net loss position. The remaining $4.7 billion of cash and cash equivalents was posted at clearing members or clearinghouses in connection with derivatives and securities transactions as of September 30, 2015 . As of December 31, 2014 , we pledged $5.4 billion of collateral in the form of cash and cash equivalents, of which $1.2 billion related to our OTC derivative agreements as we had $3.0 billion of such derivatives in a net loss position. The remaining $4.2 billion of cash and cash equivalents was posted at clearing members or clearinghouses in connection with derivatives and securities transactions as of December 31, 2014.

Stockholders' Equity

Stockholders' Equity	9 Months Ended
	Sep. 30, 2015
Stockholders' Equity Note [Abstract]
STOCKHOLDERS' EQUITY (DEFICIT)	NOTE 11: STOCKHOLDERS’ EQUITY Accumulated Other Comprehensive Income The table below presents changes in AOCI after the effects of our 35% federal statutory tax rate related to available-for-sale securities, closed cash flow hedges, and our defined benefit plans. Table 11.1 — Changes in AOCI by Component, Net of Tax Nine Months Ended September 30, 2015 AOCI Related to Available- For-Sale Securities AOCI Related to Cash Flow Hedge Relationships AOCI Related to Defined Benefit Plans Total (in millions) Beginning balance $ 2,546 $ (803 ) $ (13 ) $ 1,730 Other comprehensive income before reclassifications (1) 373 — 27 400 Amounts reclassified from accumulated other comprehensive income (591 ) 132 (1 ) (460 ) Changes in AOCI by component (218 ) 132 26 (60 ) Ending balance $ 2,328 $ (671 ) $ 13 $ 1,670 Nine Months Ended September 30, 2014 AOCI Related to Available- For-Sale Securities AOCI Related to Cash Flow Hedge Relationships AOCI Related to Defined Benefit Plans Total (in millions) Beginning balance $ 962 $ (1,000 ) $ 32 $ (6 ) Other comprehensive income before reclassifications (1) 1,903 — 1 1,904 Amounts reclassified from accumulated other comprehensive income (341 ) 151 (2 ) (192 ) Changes in AOCI by component 1,562 151 (1 ) 1,712 Ending balance $ 2,524 $ (849 ) $ 31 $ 1,706 (1) For the nine months ended September 30, 2015 and the nine months ended September 30, 2014, net of tax expense of $0.2 billion and $1.0 billion , respectively, for AOCI related to available-for-sale securities. Reclassifications from AOCI to Net Income The table below presents reclassifications from AOCI to net income, including the affected line item in our consolidated statements of comprehensive income. Table 11.2 — Reclassifications from AOCI to Net Income Details about Accumulated Other Comprehensive Income Components Three Months Ended September 30, Nine Months Ended September 30, Affected Line Item in the Consolidated Statements of Comprehensive Income 2015 2014 2015 2014 (in millions) AOCI related to available-for-sale securities $ 312 $ 107 $ 1,154 $ 1,212 Other gains (losses) on investment securities recognized in earnings (54 ) (166 ) (245 ) (687 ) Net impairment of available-for-sale securities recognized in earnings 258 (59 ) 909 525 Total before tax (89 ) 21 (318 ) (184 ) Tax (expense) or benefit 169 (38 ) 591 341 Net of tax AOCI related to cash flow hedge relationships — (1 ) (1 ) (2 ) Interest expense — Other debt (53 ) (75 ) (176 ) (230 ) Expense related to derivatives (53 ) (76 ) (177 ) (232 ) Total before tax 18 26 45 81 Tax (expense) or benefit (35 ) (50 ) (132 ) (151 ) Net of tax AOCI related to defined benefit plans 1 1 1 3 Salaries and employee benefits — — — (1 ) Tax (expense) or benefit 1 1 1 2 Net of tax Total reclassifications in the period $ 135 $ (87 ) $ 460 $ 192 Net of tax Future Reclassifications from AOCI to Net Income Related to Closed Cash Flow Hedges As shown in “ Table 11.1 — Changes in AOCI by Component, Net of Tax ,” the total AOCI related to derivatives designated as cash flow hedges was a loss of $0.7 billion and $0.8 billion at September 30, 2015 and September 30, 2014, respectively, composed of deferred net losses on closed cash flow hedges. Closed cash flow hedges involve derivatives that have been terminated or are no longer designated as cash flow hedges. Fluctuations in prevailing market interest rates have no effect on the deferred portion of AOCI relating to losses on closed cash flow hedges. The previously deferred amount related to closed cash flow hedges remains in our AOCI balance and will be recognized into earnings over the expected time period for which the forecasted transactions affect earnings, unless it is deemed probable that the forecasted transactions will not occur. Over the next 12 months, we estimate that approximately $146 million , net of taxes, of the $0.7 billion of cash flow hedge losses in AOCI at September 30, 2015 will be reclassified into earnings. The maximum remaining length of time over which we have hedged the exposure related to the variability in future cash flows on forecasted transactions, primarily forecasted debt issuances, is 18 years. Senior Preferred Stock No cash was received from Treasury under the Purchase Agreement during the three months ended September 30, 2015, because we had positive net worth at June 30, 2015 and, consequently, FHFA did not request a draw on our behalf. At September 30, 2015 , our assets exceeded our liabilities under GAAP; therefore no draw is being requested from Treasury under the Purchase Agreement. Our quarterly senior preferred stock dividend is the amount, if any, by which our Net Worth Amount at the end of the immediately preceding fiscal quarter exceeds the applicable Capital Reserve Amount, which was established at $3 billion for 2013 and declines to zero in 2018. Because on our Net Worth Amount at September 30, 2015 was below the Capital Reserve Amount of $1.8 billion in 2015, we will not have a dividend obligation under the Purchase Agreement in December 2015. See “NOTE 2: CONSERVATORSHIP AND RELATED MATTERS — Government Support for our Business” for additional information. The aggregate liquidation preference on the senior preferred stock owned by Treasury was $72.3 billion as of both September 30, 2015 and December 31, 2014. See “NOTE 18: REGULATORY CAPITAL” for additional information. Stock-Based Compensation We did not repurchase or issue any of our common shares or non-cumulative preferred stock during the three and nine months ended September 30, 2015, except for issuances of treasury stock relating to stock-based compensation granted prior to conservatorship. For purposes of the earnings-per-share calculation, all stock options outstanding at September 30, 2015 and September 30, 2014 were out of the money and excluded from the computation of dilutive potential common shares during the three and nine months ended September 30, 2015 and the three and nine months ended September 30, 2014, respectively. The weighted average common shares outstanding for the period includes the weighted average number of shares that are associated with the warrant for our common stock issued to Treasury pursuant to the Purchase Agreement. Dividends Declared No common stock dividends were declared during the nine months ended September 30, 2015. During the three months ended March 31, 2015, June 30, 2015, and September 30, 2015 , we paid dividends of $0.9 billion , $0.7 billion , and $3.9 billion , respectively, in cash on the senior preferred stock at the direction of our Conservator. We did not declare or pay dividends on any other series of Freddie Mac preferred stock outstanding during the nine months ended September 30, 2015.

Income Taxes

Income Taxes	9 Months Ended
	Sep. 30, 2015
Income Tax Disclosure [Abstract]
INCOME TAXES	NOTE 12: INCOME TAXES Income Tax Benefit (Expense) For the three months ended September 30, 2015 and the three months ended September 30, 2014 , we reported an income tax benefit (expense) of $0.2 billion and $(1.0) billion , respectively, resulting in effective tax rates of 29.0% and 31.5% , respectively. For the nine months ended September 30, 2015 and the nine months ended September 30, 2014 , we reported an income tax benefit (expense) of $(2.0) billion and $(3.4) billion , respectively, resulting in effective tax rates of 31.9% and 31.1% , respectively. Our effective tax rate differed from the statutory rate of 35% in these periods primarily due to our recognition of low income housing tax credits. For a discussion of our significant accounting policies related to income taxes, please see “NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES" and "NOTE 12: INCOME TAXES" in our 2014 Annual Report. Deferred Tax Assets, Net We had net deferred tax assets of $17.8 billion and $19.5 billion as of September 30, 2015 and December 31, 2014 , respectively. At September 30, 2015 , our net deferred tax assets consisted primarily of basis differences related to derivative instruments and deferred fees. Based on all positive and negative evidence available at September 30, 2015 , we determined that it is more likely than not that our net deferred tax assets will be realized. Therefore, a valuation allowance was not necessary. Unrecognized Tax Benefits and IRS Examinations We evaluated all income tax positions and determined that there were no uncertain tax positions that required reserves as of September 30, 2015 . A final decision related to our tax accounting method for certain hedging transactions for years 1998-2010 was entered in U.S. Tax Court in June 2015.

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
SEGMENT REPORTING	NOTE 13: SEGMENT REPORTING We evaluate segment performance and allocate resources based on a Segment Earnings approach, subject to the conduct of our business under the direction of the Conservator. See “NOTE 2: CONSERVATORSHIP AND RELATED MATTERS” for additional information about the conservatorship. We present Segment Earnings by reclassifying certain credit guarantee-related activities and investment-related activities between various line items on our GAAP consolidated statements of comprehensive income and allocating certain revenues and expenses, including certain returns on assets and funding costs, and all administrative expenses to our three reportable segments. We do not consider our assets by segment when evaluating segment performance or allocating resources. We operate our business solely in the U.S. and its territories. Therefore, we do not generate any revenue from and do not have any long-lived assets other than financial instruments in geographic locations outside of the U.S. and its territories. Segments We have three reportable segments, which are based on the type of business activities each performs — Single-family Guarantee, Investments, and Multifamily. Segment Earnings The financial performance of our Single-family Guarantee segment is measured based on its contribution to GAAP net income (loss). Our Investments segment and Multifamily segment are measured based on each segment's contribution to GAAP comprehensive income (loss), which consists of the sum of its contribution to GAAP net income (loss) and GAAP total other comprehensive income (loss), net of taxes. Taxes for the reportable segments are generally calculated by applying our corporate annual effective tax rate to each segment's pre-tax income. In the second quarter of 2015, we changed our Segment Earnings definition associated with the revenue and expense related to the Temporary Payroll Tax Cut Continuation Act of 2011. As a result of this change, the revenue and expense related to the legislated 10 basis point increase in management and guarantee fee income are now netted within the Single-family Guarantee segment. The purpose of this change is to better reflect how management evaluates the Single-family Guarantee segment. Prior period results have been revised to conform with the current period presentation. We reclassified $198 million and $563 million of Temporary Payroll Tax Cut Continuation Act of 2011 expense into management and guarantee income for the three and nine months ended September 30, 2014, respectively. The sum of Segment Earnings for each segment and the All Other category equals GAAP net income (loss). Likewise, the sum of comprehensive income (loss) for each segment and the All Other category equals GAAP comprehensive income (loss). However, the accounting principles we apply to present certain financial statement line items in Segment Earnings for our reportable segments, in particular Segment Earnings management and guarantee income and net interest income, differ significantly from those applied in preparing the comparable line items in our consolidated financial statements prepared in accordance with GAAP. Accordingly, the results of such line items should not be used as a substitute for the comparable line items as determined in accordance with GAAP. Segment Adjustments In presenting Segment Earnings management and guarantee income and net interest income, we make adjustments to better reflect how management measures and assesses the performance of each segment and the company as a whole. These adjustments relate to amounts that are not reflected in net income (loss) as determined in accordance with GAAP. These adjustments are reversed through the segment adjustments line item within Segment Earnings, so that Segment Earnings (loss) for each segment equals GAAP net income (loss) for each segment. Segment adjustments consist of the following: • We adjust our Segment Earnings management and guarantee income for the Single-family Guarantee segment to include the amortization of buy-down fees and credit delivery fees recorded in periods prior to the January 1, 2010 adoption of accounting guidance for the transfers of financial assets and the consolidation of VIEs. As of September 30, 2015 , the unamortized balance of buy-down fees was $0.2 billion and the unamortized balance of credit delivery fees was $0.6 billion . We consider such fees to be part of the effective rate of the management and guarantee fee income on guaranteed mortgage loans. These adjustments are necessary to better reflect the realization of revenue associated with guarantee contracts over the life of the underlying loans. • We adjust our Segment Earnings net interest income for the Investments segment to include the amortization of cash premiums and discounts, as well as buy-up fees, on the consolidated Freddie Mac mortgage-related securities we purchase as investments. As of September 30, 2015 , the unamortized balance of such premiums and discounts, net was $3.8 billion and the unamortized balance of buy-up fees was $0.3 billion . These adjustments are necessary to reflect the effective yield realized on investments in consolidated Freddie Mac mortgage-related securities purchased at a premium or discount or with buy-up fees. The table below presents Segment Earnings by segment. Table 13.1 — Summary of Segment Earnings (Loss) and Comprehensive Income (Loss) Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Segment Earnings (loss), net of taxes: Single-family Guarantee $ 591 $ 196 $ 1,140 $ 1,077 Investments (963 ) 1,440 2,424 5,060 Multifamily (103 ) 445 654 1,339 All Other — — — (13 ) Total Segment Earnings (loss), net of taxes (475 ) 2,081 4,218 7,463 Net income (loss) $ (475 ) $ 2,081 $ 4,218 $ 7,463 Comprehensive income (loss) of segments: Single-family Guarantee $ 591 $ 195 $ 1,139 $ 1,076 Investments (1,008 ) 2,259 2,446 6,953 Multifamily (84 ) 332 546 1,159 All Other — — 27 (13 ) Comprehensive income (loss) of segments (501 ) 2,786 4,158 9,175 Comprehensive income (loss) $ (501 ) $ 2,786 $ 4,158 $ 9,175 The table below presents detailed reconciliations between our GAAP financial statements and Segment Earnings by financial statement line item for our reportable segments and All Other. Table 13.2 — Segment Earnings (Loss) and Reconciliation to GAAP Results Three Months Ended September 30, 2015 Total Segment Earnings (Loss), Net of Tax Reconciliation to Consolidated Statements of Comprehensive Income Total per Consolidated Statements of Comprehensive Income Single-family Guarantee Investments Multifamily All Other Reclassifications Segment Adjustments Total Reconciling Items (in millions) Net interest income $ 52 $ 394 $ 148 $ — $ 594 $ 2,944 $ 205 $ 3,149 $ 3,743 Benefit for credit losses 360 — — — 360 168 — 168 528 Non-interest income (loss): Management and guarantee income (1) 1,345 — 87 — 1,432 (1,280 ) (62 ) (1,342 ) 90 Net impairment of available-for-sale securities recognized in earnings — 108 4 — 112 (166 ) — (166 ) (54 ) Derivative gains (losses) 2 (2,950 ) (502 ) — (3,450 ) (722 ) — (722 ) (4,172 ) Gains (losses) on trading securities — (103 ) 47 — (56 ) — — — (56 ) Gains (losses) on mortgage loans (319 ) — 122 — (197 ) — — — (197 ) Other non-interest income (loss) 175 1,028 41 — 1,244 (696 ) — (696 ) 548 Non-interest expense: Administrative expenses (309 ) (76 ) (80 ) — (465 ) — — — (465 ) REO operations expense (116 ) — — — (116 ) — — — (116 ) Other non-interest expense (257 ) — (13 ) — (270 ) (248 ) — (248 ) (518 ) Segment adjustments (62 ) 205 — — 143 — (143 ) (143 ) — Income tax (expense) benefit (280 ) 431 43 — 194 — — — 194 Net income (loss) 591 (963 ) (103 ) — (475 ) — — — (475 ) Changes in unrealized gains (losses) related to available-for-sale securities — (80 ) 19 — (61 ) — — — (61 ) Changes in unrealized gains (losses) related to cash flow hedge relationships — 35 — — 35 — — — 35 Changes in defined benefit plans — — — — — — — — — Total other comprehensive income (loss), net of taxes — (45 ) 19 — (26 ) — — — (26 ) Comprehensive income (loss) $ 591 $ (1,008 ) $ (84 ) $ — $ (501 ) $ — $ — $ — $ (501 ) Nine Months Ended September 30, 2015 Total Segment Earnings (Loss), Net of Tax Reconciliation to Consolidated Statements of Comprehensive Income Total per Consolidated Statements of Comprehensive Income Single-family Guarantee Investments Multifamily All Other Reclassifications Segment Adjustments Total Reconciling Items (in millions) Net interest income $ (59 ) $ 1,479 $ 671 $ — $ 2,091 $ 8,666 $ 602 $ 9,268 $ 11,359 Benefit for credit losses 1,335 — 20 — 1,355 529 — 529 1,884 Non-interest income (loss): Management and guarantee income (1) 4,066 — 239 — 4,305 (3,834 ) (202 ) (4,036 ) 269 Net impairment of available-for-sale securities recognized in earnings — 322 (22 ) — 300 (545 ) — (545 ) (245 ) Derivative gains (losses) (36 ) (1,221 ) 7 — (1,250 ) (2,190 ) — (2,190 ) (3,440 ) Gains (losses) on trading securities — (329 ) — — (329 ) — — — (329 ) Gains (losses) on mortgage loans (1,537 ) — 216 — (1,321 ) — — — (1,321 ) Other non-interest income 485 2,949 106 — 3,540 (1,921 ) — (1,921 ) 1,619 Non-interest expense: Administrative expense (938 ) (239 ) (240 ) — (1,417 ) — — — (1,417 ) REO operations expense (243 ) — — — (243 ) — — — (243 ) Other non-interest expense (1,196 ) (2 ) (36 ) — (1,234 ) (705 ) — (705 ) (1,939 ) Segment adjustments (202 ) 602 — — 400 — (400 ) (400 ) — Income tax expense (535 ) (1,137 ) (307 ) — (1,979 ) — — — (1,979 ) Net income 1,140 2,424 654 — 4,218 — — — 4,218 Changes in unrealized gains (losses) related to available-for-sale securities — (110 ) (108 ) — (218 ) — — — (218 ) Changes in unrealized gains (losses) related to cash flow hedge relationships — 132 — — 132 — — — 132 Changes in defined benefit plans (1 ) — — 27 26 — — — 26 Total other comprehensive income (loss), net of taxes (1 ) 22 (108 ) 27 (60 ) — — — (60 ) Comprehensive income $ 1,139 $ 2,446 $ 546 $ 27 $ 4,158 $ — $ — $ — $ 4,158 Three Months Ended September 30, 2014 Total Segment Earnings (Loss), Net of Tax Reconciliation to Consolidated Statements of Comprehensive Income Total per Consolidated Statements of Comprehensive Income Single-family Guarantee Investments Multifamily All Other Reclassifications Segment Adjustments Total Reconciling Items (in millions) Net interest income $ 19 $ 762 $ 240 $ — $ 1,021 $ 2,474 $ 168 $ 2,642 $ 3,663 (Provision) benefit for credit losses (818 ) — 10 — (808 ) 234 — 234 (574 ) Non-interest income (loss): Management and guarantee income (1) 1,143 — 65 — 1,208 (1,049 ) (75 ) (1,124 ) 84 Net impairment of available-for-sale securities recognized in earnings — 37 — — 37 (203 ) — (203 ) (166 ) Derivative gains (losses) 19 (133 ) 310 — 196 (813 ) — (813 ) (617 ) Gains (losses) on trading securities — (202 ) (14 ) — (216 ) — — — (216 ) Gains (losses) on mortgage loans 52 — 116 — 168 — — — 168 Other non-interest income 351 1,594 11 — 1,956 (445 ) — (445 ) 1,511 Non-interest expense: Administrative expenses (302 ) (104 ) (66 ) — (472 ) — — — (472 ) REO operations income (expense) (109 ) — 6 — (103 ) — — — (103 ) Other non-interest expense (40 ) — (3 ) — (43 ) (198 ) — (198 ) (241 ) Segment adjustments (75 ) 168 — — 93 — (93 ) (93 ) — Income tax expense (44 ) (682 ) (230 ) — (956 ) — — — (956 ) Net income 196 1,440 445 — 2,081 — — — 2,081 Changes in unrealized gains (losses) related to available-for-sale securities — 769 (113 ) — 656 — — — 656 Changes in unrealized gains (losses) related to cash flow hedge relationships — 50 — — 50 — — — 50 Changes in defined benefit plans (1 ) — — — (1 ) — — — (1 ) Total other comprehensive income (loss), net of taxes (1 ) 819 (113 ) — 705 — — — 705 Comprehensive income $ 195 $ 2,259 $ 332 $ — $ 2,786 $ — $ — $ — $ 2,786 Nine Months Ended September 30, 2014 Total Segment Earnings (Loss), Net of Tax Reconciliation to Consolidated Statements of Comprehensive Income Total per Consolidated Statements of Comprehensive Income Single-family Guarantee Investments Multifamily All Other Reclassifications Segment Adjustments Total Reconciling Items (in millions) Net interest income $ (27 ) $ 2,324 $ 705 $ — $ 3,002 $ 7,206 $ 468 $ 7,674 $ 10,676 (Provision) benefit for credit losses (742 ) — 52 — (690 ) 649 — 649 (41 ) Non-interest income (loss): Management and guarantee income (1) 3,201 — 186 — 3,387 (2,910 ) (233 ) (3,143 ) 244 Net impairment of available-for-sale securities recognized in earnings — (95 ) — — (95 ) (592 ) — (592 ) (687 ) Derivative gains (losses) (9 ) (2,745 ) 507 — (2,247 ) (2,647 ) — (2,647 ) (4,894 ) Gains (losses) on trading securities — (243 ) 60 — (183 ) — — — (183 ) Gains (losses) on mortgage loans (143 ) — 526 — 383 — — — 383 Other non-interest income 602 8,004 143 — 8,749 (1,143 ) — (1,143 ) 7,606 Non-interest expense: Administrative expense (855 ) (339 ) (199 ) — (1,393 ) — — — (1,393 ) REO operations income (expense) (120 ) — 8 — (112 ) — — — (112 ) Other non-interest expense (159 ) (6 ) (16 ) (18 ) (199 ) (563 ) — (563 ) (762 ) Segment adjustments (233 ) 468 — — 235 — (235 ) (235 ) — Income tax (expense) benefit (438 ) (2,308 ) (633 ) 5 (3,374 ) — — — (3,374 ) Net income (loss) 1,077 5,060 1,339 (13 ) 7,463 — — — 7,463 Changes in unrealized gains (losses) related to available-for-sale securities — 1,742 (180 ) — 1,562 — — — 1,562 Changes in unrealized gains (losses) related to cash flow hedge relationships — 151 — — 151 — — — 151 Changes in defined benefit plans (1 ) — — — (1 ) — — — (1 ) Total other comprehensive income (loss), net of taxes (1 ) 1,893 (180 ) — 1,712 — — — 1,712 Comprehensive income $ 1,076 $ 6,953 $ 1,159 $ (13 ) $ 9,175 $ — $ — $ — $ 9,175 (1) Management and guarantee income is included in other income on our GAAP consolidated statements of comprehensive income.

Financial Guarantees

Financial Guarantees	9 Months Ended
	Sep. 30, 2015
Guarantees [Abstract]
FINANCIAL GUARANTEES	NOTE 14: FINANCIAL GUARANTEES We provide financial guarantees to securitization trusts that issue mortgage-related securities backed by single-family mortgage loans, which we consolidate. During the three and nine months ended September 30, 2015 , we issued approximately $97.5 billion and $277.5 billion , respectively, compared to $77.4 billion and $186.9 billion during the three and nine months ended September 30, 2014 , respectively, in UPB of Freddie Mac mortgage-related securities backed by single-family mortgage loans (excluding those backed by HFA bonds). Our exposure for guarantees to consolidated securitization trusts is generally the UPB of the mortgage loans recorded on our consolidated balance sheets. We also provide guarantees to non-consolidated securitization trusts that issue mortgage-related securities as well as in other guarantee commitments. If we are exposed to incremental credit risk by providing these guarantees, we charge a management and guarantee fee and recognize a guarantee asset, guarantee obligation, and a reserve for guarantee losses, as necessary. The table below presents our maximum potential exposure, our recognized liability, and the maximum remaining term of our financial guarantees that are not consolidated on our balance sheets. Table 14.1 — Financial Guarantees September 30, 2015 December 31, 2014 Maximum Exposure (1) Recognized Liability (2) Maximum Remaining Term Maximum Exposure (1) Recognized Liability (2) Maximum Remaining Term (dollars in millions, terms in years) Non-consolidated Freddie Mac securities $ 102,527 $ 1,013 40 $ 87,529 $ 861 39 Other guarantee commitments 12,551 576 39 26,147 772 39 Derivative instruments 15,609 168 30 21,336 154 31 (1) The maximum exposure represents the contractual amounts that could be lost if counterparties or borrowers defaulted, without consideration of possible recoveries under credit enhancement arrangements, such as recourse provisions, third-party insurance contracts, or from collateral held or pledged. The maximum exposure disclosed above is not representative of the actual loss we are likely to incur, based on our historical loss experience and after consideration of proceeds from related collateral liquidation. The maximum exposure for our liquidity guarantees is not mutually exclusive of our default guarantees on the same securities; therefore, these amounts are included within the maximum exposure of non-consolidated Freddie Mac securities and other guarantee commitments. (2) For non-consolidated Freddie Mac securities and other guarantee commitments, this amount represents the guarantee obligation on our consolidated balance sheets. This amount excludes our reserve for guarantee losses, which totaled $86 million and $126 million as of September 30, 2015 and December 31, 2014 , respectively, and is included within other liabilities on our consolidated balance sheets. Non-Consolidated Freddie Mac Securities During the three and nine months ended September 30, 2015 , we issued approximately $5.3 billion and $18.2 billion , respectively, compared to $3.9 billion and $11.0 billion during the three and nine months ended September 30, 2014 , respectively, in UPB of Other Guarantee Transactions, all of which were backed by multifamily mortgage loans, for which a guarantee asset and guarantee obligation were recognized. For many of the mortgage loans underlying our non-consolidated guarantees, there are credit protections from third parties, including subordination, covering a portion of our exposure. See “NOTE 4: MORTGAGE LOANS AND LOAN LOSS RESERVES” for information about credit protections on mortgage loans we guarantee. Other Guarantee Commitments We provide long-term standby commitments to certain of our customers, which obligate us to purchase seriously delinquent mortgage loans that are covered by those agreements. During the nine months ended September 30, 2015 and the nine months ended September 30, 2014 , we issued and guaranteed $3.3 billion and $2.1 billion , respectively, in UPB of long-term standby commitments. These long-term standby commitments totaled $3.0 billion and $16.5 billion in UPB at September 30, 2015 and December 31, 2014 , respectively. Periodically, a customer may seek to terminate long-term standby commitments and simultaneously enter into guarantor swap transactions to obtain our PCs backed by many of the same mortgage loans. We also had other guarantee commitments on multifamily housing revenue bonds that were issued by HFAs of $9.6 billion and $9.3 billion in UPB at September 30, 2015 and December 31, 2014 , respectively. In addition, as of December 31, 2014 , we had issued guarantees under the TCLFP on securities backed by HFA bonds with UPB of $0.4 billion . We did not have any issued guarantees under the TCLFP on securities backed by HFA bonds as of September 30, 2015. Liquidity Guarantees No advances under our liquidity guarantees were outstanding at both September 30, 2015 and December 31, 2014 .

Concentration of Credit and Oth

Concentration of Credit and Other Risks	9 Months Ended
	Sep. 30, 2015
Risks and Uncertainties [Abstract]
CONCENTRATION OF CREDIT AND OTHER RISKS	NOTE 15: CONCENTRATION OF CREDIT AND OTHER RISKS Single-Family Credit Guarantee Portfolio The table below summarizes the concentration by year of origination and geographic area of the approximately $1.7 trillion in UPB of our single-family credit guarantee portfolio at both September 30, 2015 and December 31, 2014. See “NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES” in our 2014 Annual Report and "NOTE 4: MORTGAGE LOANS AND LOAN LOSS RESERVES” and “NOTE 7: INVESTMENTS IN SECURITIES” for more information about credit risk associated with mortgage loans and mortgage-related securities that we hold or guarantee. Table 15.1 — Concentration of Credit Risk — Single-Family Credit Guarantee Portfolio September 30, 2015 December 31, 2014 Percent of Credit Losses Nine Months Ended Percentage of Portfolio (1) Serious Delinquency Rate Percentage of Portfolio (1) Serious Delinquency Rate September 30, 2015 September 30, 2014 Year of Origination 2015 12 % — % N/A N/A — % N/A 2014 11 0.07 12 % 0.02 % — — % 2013 14 0.10 16 0.06 — — 2012 13 0.09 14 0.09 — — 2011 5 0.26 6 0.26 — — 2010 5 0.46 6 0.46 1 — 2009 5 0.87 6 0.92 2 2 Subtotal - New single-family book 65 0.20 60 0.24 3 2 HARP and other relief refinance mortgage loans (1) 18 0.70 20 0.75 7 7 2005 to 2008 Legacy single-family book 11 6.26 13 7.59 80 83 Pre-2005 Legacy single-family book 6 2.64 7 3.10 10 8 Total 100 % 1.41 % 100 % 1.88 % 100 % 100 % Region (2) West 29 % 0.86 % 29 % 1.23 % 13 % 13 % Northeast 26 2.20 26 2.81 43 26 North Central 17 1.18 17 1.48 16 21 Southeast 16 1.69 16 2.40 25 36 Southwest 12 0.91 12 1.16 3 4 Total 100 % 1.41 % 100 % 1.88 % 100 % 100 % State Arizona, California, Florida, and Nevada (3) 26 % 1.25 % 26 % 1.91 % 27 % 37 % Illinois, Michigan, and Ohio (4) 10 1.36 10 1.70 13 17 New York and New Jersey (5) 9 3.63 9 4.62 28 10 All other 55 1.18 55 1.53 32 36 Total 100 % 1.41 % 100 % 1.88 % 100 % 100 % (1) HARP and other relief refinance mortgage loans are presented separately rather than in the year that the refinancing occurred (from 2009 to 2015). All other refinance mortgage loans are presented in the year that the refinancing occurred. (2) Region designation: West (AK, AZ, CA, GU, HI, ID, MT, NV, OR, UT, WA); Northeast (CT, DE, DC, MA, ME, MD, NH, NJ, NY, PA, RI, VT, VA, WV); North Central (IL, IN, IA, MI, MN, ND, OH, SD, WI); Southeast (AL, FL, GA, KY, MS, NC, PR, SC, TN, VI); Southwest (AR, CO, KS, LA, MO, NE, NM, OK, TX, WY). (3) Represents the four states that had the largest cumulative declines in home prices during the housing crisis that began in 2006, as measured using Freddie Mac’s home price index. (4) Represents selected states in the North Central region that have experienced adverse economic conditions since 2006. (5) Represents two states with a judicial foreclosure process in which there are a significant number of seriously delinquent mortgage loans within our single-family credit guarantee portfolio. Credit Performance of Certain Higher Risk Single-Family Mortgage Loan Categories Participants in the mortgage loan market often characterize single-family mortgage loans based upon their overall credit quality at the time of origination, generally considering them to be prime or subprime. Many mortgage loan market participants classify single-family mortgage loans with credit characteristics that range between their prime and subprime categories as Alt-A because these mortgage loans have a combination of characteristics of each category, may be underwritten with lower or alternative income or asset documentation requirements compared to a full documentation mortgage loan, or both. However, there is no universally accepted definition of subprime or Alt-A. Although we discontinued new purchases of mortgage loans with lower documentation standards for assets or income beginning March 1, 2009, we continued to purchase certain amounts of these mortgage loans in cases where the mortgage loan was either: (a) purchased pursuant to a previously issued other guarantee commitment; (b) part of our relief refinance initiative; or (c) in another refinance mortgage loan initiative and the pre-existing mortgage loan (including Alt-A mortgage loans) was originated under less than full documentation standards. In the event we purchase a refinance mortgage loan and the original mortgage loan had been previously identified as Alt-A, such refinance mortgage loan may no longer be categorized or reported as Alt-A in the table below because the new refinance mortgage loan replacing the original mortgage loan would not be identified by the seller/servicer as an Alt-A mortgage loan. As a result, our reported Alt-A balances may be lower than would otherwise be the case had such refinancing not occurred. Although we do not categorize single-family mortgage loans we purchase or guarantee as prime or subprime, we recognize that there are a number of mortgage loan types with certain characteristics that indicate a higher degree of credit risk. For example, a borrower’s credit score is a useful measure for assessing the credit quality of the borrower. Statistically, borrowers with higher credit scores are more likely to repay or have the ability to refinance than those with lower scores. Presented below is a summary of the serious delinquency rates of certain higher-risk categories (based on characteristics of the mortgage loan at origination) of single-family mortgage loans in our single-family credit guarantee portfolio based on UPB. The table includes a presentation of each higher-risk category in isolation. A single mortgage loan may fall within more than one category (for example, an interest-only mortgage loan may also have an original LTV ratio greater than 90%). Mortgage loans with a combination of these attributes will have an even higher risk of delinquency than those with an individual attribute. Table 15.2 — Certain Higher-Risk Categories in the Single-Family Credit Guarantee Portfolio (1) Percentage of Portfolio Serious Delinquency Rate September 30, 2015 December 31, 2014 September 30, 2015 December 31, 2014 Interest-only 1 % 2 % 7.11 % 9.36 % Option ARM (2) — — 8.46 9.87 Alt-A 3 3 7.01 8.53 Original LTV ratio greater than 90% (3) 16 16 2.07 2.58 Lower credit scores at origination (less than 620) 3 3 6.89 8.57 (1) Excludes mortgage loans underlying certain Other Guarantee Transactions for which data was not available. (2) For reporting purposes, mortgage loans within the option ARM category continue to be reported in that category following modification, even though the modified mortgage loan no longer provides for optional payment provisions. (3) Includes HARP mortgage loans, which we are required to purchase as part of our participation in the MHA Program. The percentage of borrowers in our single-family credit guarantee portfolio, based on UPB, with estimated current LTV ratios greater than 100% was approximately 4% and 6% at September 30, 2015 and December 31, 2014, respectively. An increase in the estimated current LTV ratio of a mortgage loan indicates that the borrower’s equity in the home has declined, and can negatively affect the borrower’s ability to refinance (outside of HARP) or to sell the property for an amount at or above the balance of the outstanding mortgage loan. The serious delinquency rate for single-family mortgage loans with estimated current LTV ratios greater than 100% was 8.09% and 9.06% as of September 30, 2015 and December 31, 2014, respectively. Mortgage loans in our 2005-2008 Legacy single-family book have been more affected by declines in home prices that have occurred since 2006 than mortgage loans originated in other years. Our 2005-2008 Legacy single-family book comprised approximately 11% of our single-family credit guarantee portfolio, based on UPB at September 30, 2015 , and these mortgage loans accounted for approximately 80% of our credit losses during the nine months ended September 30, 2015. We categorize our investments in non-agency mortgage-related securities as subprime, option ARM, or Alt-A if the securities were identified as such based on information provided to us when we entered into these transactions. We have not identified option ARM, CMBS, obligations of states and political subdivisions, and manufactured housing securities as either subprime or Alt-A securities. See “NOTE 7: INVESTMENTS IN SECURITIES” for further information on these categories and other concentrations in our investments in securities. Multifamily Mortgage Portfolio The table below summarizes the concentration of multifamily mortgage loans in our multifamily mortgage portfolio classified by the legal structure of the investments we hold, based on UPB. Table 15.3 — Concentration of Credit Risk — Multifamily Mortgage Portfolio September 30, 2015 December 31, 2014 UPB Delinquency Rate (1) UPB Delinquency Rate (1) (dollars in billions) Legal Structure Unsecuritized mortgage loans: Unsecuritized mortgage loans held-for-investment $ 31.5 — % $ 40.9 0.03 % Unsecuritized mortgage loans held-for-sale 22.7 — 12.1 — K Certificates 92.4 0.02 76.0 0.01 Other Freddie-Mac mortgage-related securities 5.6 — 5.0 0.64 Other guarantee commitments 9.6 — 9.3 — Total $ 161.8 0.01 $ 143.3 0.04 (1) Based on mortgage loans two monthly payments or more delinquent or in foreclosure. In the multifamily mortgage portfolio, the primary concentration of credit risk results from the legal structure of the investments we hold. Our exposure to credit risk in K Certificates is minimal, as the expected credit risk is absorbed by the subordinate tranches, which are sold to private investors. As a result, our multifamily credit risk is primarily related to mortgage loans that have not been securitized. Seller/Servicers We acquire a significant portion of our single-family mortgage loan purchase volume from several large sellers. Our top ten single-family sellers provided approximately 51% of our single-family purchase volume during the nine months ended September 30, 2015. Wells Fargo Bank, N.A. and Bank of America, N.A. each accounted for 12% of our single-family mortgage loan purchase volume and were the only single-family sellers that comprised 10% or more of our purchase volume during the nine months ended September 30, 2015. In recent years, there has been a shift in our purchase volume from depository institutions to non-depository sellers. Some of these non-depository sellers have grown rapidly in recent years and we purchase a significant share of our mortgage loans from them. Our top three non-depository sellers provided approximately 10% of our single-family purchase volume during the nine months ended September 30, 2015 . We are exposed to the risk that servicers might fail to service mortgage loans in accordance with our contractual requirements, resulting in increased credit losses. For example, our servicers have an active role in our loss mitigation efforts, including under the servicing alignment initiative and the MHA Program, and therefore, we have exposure to them to the extent a decline in their performance results in a failure to realize the anticipated benefits of our loss mitigation plans. Since we do not have our own servicing operation, if our servicers lack appropriate controls, experience a failure in their controls, or experience an operating disruption in their ability to service mortgage loans, our business and financial results could be adversely affected. A significant portion of our single-family mortgage loans are serviced by several large servicers. Our top two single-family mortgage loan servicers, Wells Fargo Bank, N.A. and JPMorgan Chase Bank, N.A., serviced approximately 21% and 10% , respectively, of our single-family mortgage loans, and were the only servicers that serviced 10% or more of our mortgage loans, as of September 30, 2015 . In recent years, there has been a shift in our servicing from depository institutions to non-depository servicers. Some of these non-depository servicers have grown rapidly in recent years and now service a large share of our mortgage loans. As of September 30, 2015 , approximately 10% of our total single-family credit guarantee portfolio was serviced by our three largest non-depository servicers, on a combined basis. Several of these non-depository servicers also service a large share of the mortgage loans underlying our investments in non-agency mortgage-related securities. Ocwen Financial Corp. (Ocwen) is one of our significant non-depository servicers. Ocwen and its subsidiaries and/or affiliates have been the subject of significant adverse regulatory scrutiny, and we have taken steps designed to reduce our exposure to them. We reduced the UPB of Freddie Mac mortgage loans serviced by Ocwen to $28.3 billion as of September 30, 2015 from $50.9 billion as of December 31, 2014, or 44% . We continue to closely monitor Ocwen’s performance. We acquire our multifamily mortgage loans from a network of approved sellers. Our top three multifamily sellers, CBRE Capital Markets, Inc., Walker & Dunlop, LLC, and Holliday Fenoglio Fowler, L.P., provided approximately 17% , 14% , and 14% , respectively, of our multifamily new business volume during the nine months ended September 30, 2015. Our top ten multifamily sellers represented an aggregate of approximately 82% of our multifamily new business volume during the nine months ended September 30, 2015. A significant portion of our multifamily mortgage loans are serviced by several of our large customers. As of September 30, 2015 our top three multifamily servicers, CBRE Capital Markets, Inc., Wells Fargo Bank, N.A., and Berkadia Commercial Mortgage LLC, each serviced 10% or more of our multifamily mortgage portfolio, excluding mortgage loans underlying K Certificates, and together serviced approximately 37% of this portfolio. Mortgage Insurers We are exposed to institutional credit risk relating to the potential insolvency of, or non-performance by, mortgage insurers that insure single-family mortgage loans we purchase or guarantee. We evaluate the recovery and collectability from mortgage insurers as part of the estimate of our loan loss reserves. As of September 30, 2015 , mortgage insurers provided coverage with maximum loss limits of $64.5 billion , for $251.7 billion of UPB, in connection with our single-family credit guarantee portfolio. These amounts are based on gross coverage without regard to netting of coverage that may exist to the extent an affected mortgage loan is covered under both primary and pool insurance. Our top four mortgage insurer counterparties, United Guaranty Residential Insurance Company, Radian Guaranty Inc., Mortgage Guaranty Insurance Corporation, and Genworth Mortgage Insurance Corporation, each accounted for more than 10%, and collectively represented approximately 80% of our overall mortgage insurance coverage at September 30, 2015 . Each of our four largest counterparties had a credit rating of BB or greater, as of September 30, 2015 , based on the lower of the S&P or Moody’s rating scales and stated in terms of the S&P equivalent. PMI Mortgage Insurance Co. (PMI), Republic Mortgage Insurance Co., and Triad Guaranty Insurance Corp. (Triad) are no longer rated by either S&P or Moody’s because they are in rehabilitation or under regulatory supervision. We received proceeds of $0.5 billion and $1.0 billion during the nine months ended September 30, 2015 and the nine months ended September 30, 2014, respectively, from our primary and pool mortgage insurance policies for recovery of losses on our single-family mortgage loans. We had outstanding receivables from mortgage insurers of $0.3 billion and $0.4 billion (excluding deferred payment obligations associated with unpaid claim amounts) as of September 30, 2015 and December 31, 2014, respectively. The balance of these receivables, net of associated reserves, was approximately $0.2 billion and $0.3 billion at September 30, 2015 and December 31, 2014, respectively. PMI and Triad are both in rehabilitation, and a substantial portion of their claims are recorded by us as deferred payment obligations. These insurers no longer issue new insurance but continue to pay a portion of their respective claims in cash. If, as we currently expect, these insurers do not pay the full amount of their deferred payment obligations in cash, we would lose a portion of the coverage from these insurers. As of both September 30, 2015 and December 31, 2014, we had cumulative unpaid deferred payment obligations of $0.4 billion from these insurers. We reserved for all of these unpaid amounts as collectability is uncertain. It is not clear how the regulators of these companies will administer their respective deferred payment plans in the future, nor when or if those obligations will be paid. Cash and Other Investments Counterparties We are exposed to institutional credit risk relating to the potential insolvency of, or non-performance by, counterparties in non-mortgage-related investment agreements and cash equivalent transactions, including those entered into on behalf of our securitization trusts. Our policies require that the issuer be rated as investment grade at the time the financial instrument is purchased. We base the permitted term and dollar limits for each of these transactions on the counterparty's financial strength in order to further mitigate our risk. Our cash and other investment (including cash equivalents) counterparties are primarily major financial institutions, Treasury, and the Federal Reserve Bank of New York. As of September 30, 2015 and December 31, 2014, including amounts related to our consolidated VIEs, there were $58.8 billion and $71.4 billion , respectively, of: (a) cash and securities purchased under agreements to resell invested with institutional counterparties; (b) Treasury securities classified as cash equivalents; and (c) cash deposited with the Federal Reserve Bank of New York. As of September 30, 2015 these included: • $22.7 billion of securities purchased under agreements to resell with 15 counterparties that had short-term S&P ratings of A-1 or above; • $5.0 billion of securities purchased under agreements to resell with four counterparties that had short-term S&P ratings of A-2; • $11.0 billion of securities purchased under agreements to resell with three counterparties that do not have short-term S&P or other third-party credit ratings, but were evaluated under the company's counterparty credit risk system and were determined to be eligible for these transactions (by providing more than 100% in approved collateral); and • $20.1 billion of cash deposited with the Federal Reserve Bank of New York (as a non-interest-bearing deposit). Non-Agency Mortgage-Related Security Issuers and Servicers We are engaged in various loss mitigation efforts concerning certain investments in non-agency mortgage-related securities. Certain recent developments are discussed below. In 2011, FHFA, as Conservator for Freddie Mac and Fannie Mae, filed lawsuits against a number of corporate families of financial institutions and related defendants alleging securities laws violations and, in some cases, fraud. In March 2015, FHFA’s case against Nomura Holding America, Inc. (or Nomura) went to trial in the U.S. District Court for the Southern District of New York. The trial was completed in April 2015. In May 2015, the judge ruled against Nomura and co-defendant RBS Securities Inc. and ordered the defendants to pay an aggregate of $806 million , of which $779 million will be paid to Freddie Mac. The order also provides for Freddie Mac to transfer the mortgage-related securities at issue in this trial to the defendants. The defendants have agreed to pay for certain costs, legal fees and expenses if FHFA prevails in the litigation. This expense reimbursement payment is subject to various conditions, and is capped at $33 million (half of any such payment would be made to Freddie Mac). The defendants have filed a notice of appeal and the Court has stayed enforcement of the judgment during the pendency of the appeal. We have been working with an investor consortium that seeks to enforce certain claims relating to certain Countrywide non-agency mortgage-related securities. In June 2011, Bank of America Corporation, BAC Home Loans Servicing, LP, Countrywide Financial Corporation and Countrywide Home Loans, Inc. entered into a settlement agreement with The Bank of New York Mellon, as trustee, to resolve certain claims with respect to a number of Countrywide mortgage securitization trusts. In January 2014, a New York state court approved a significant portion of the settlement. In March 2015, a New York intermediate appellate court upheld the settlement in full. The conditions to the settlement have been satisfied. We expect that the settlement proceeds will be distributed to the securitization trusts in the near term, and we expect to receive a benefit for those covered securitizations that we hold at the time of such distributions. This benefit, which is expected to be approximately $0.4 billion , will be reflected in earnings through higher net interest income recognized over the expected life of the securities. A significant portion of the single-family mortgage loans underlying our investments in non-agency mortgage-related securities is serviced by non-depository servicers. As of September 30, 2015 and December 31, 2014, approximately $13.5 billion and $17.9 billion , respectively, in UPB of mortgage loans underlying our investments in single-family non-agency mortgage-related securities were serviced by subsidiaries and/or affiliates of Ocwen, and Ocwen was the only non-depository servicer who serviced 10% or more of the UPB underlying our investments in non-agency mortgage-related securities at those dates. Derivative Portfolio For a discussion of our derivative counterparties as well as related master netting and collateral agreements, see “NOTE 10: COLLATERAL AND OFFSETTING OF ASSETS AND LIABILITIES.”

Fair Value Disclosures

Fair Value Disclosures	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
FAIR VALUE DISCLOSURES	NOTE 16: FAIR VALUE DISCLOSURES The accounting guidance for fair value measurements and disclosures defines fair value, establishes a framework for measuring fair value, and sets forth disclosure requirements regarding fair value measurements. This guidance applies whenever other accounting guidance requires or permits assets or liabilities to be measured at fair value. Fair value measurement assumes that the transaction to sell the asset or transfer the liability takes place either in the principal market for the asset or liability, or, in the absence of a principal market, in the most advantageous market for the asset or liability. We use fair value measurements for the initial recording of certain assets and liabilities and periodic remeasurement of certain assets and liabilities on a recurring or non-recurring basis. Fair Value Measurements The accounting guidance for fair value measurements and disclosures establishes a three-level fair value hierarchy that prioritizes the inputs into the valuation techniques used to measure fair value. The fair value hierarchy gives the highest priority, Level 1, to measurements based on quoted prices in active markets for identical assets or liabilities. The next highest priority, Level 2, is given to measurements based on observable inputs other than quoted prices in active markets for identical assets or liabilities. The lowest priority, Level 3, is given to measurements based on unobservable inputs. Assets and liabilities are classified in their entirety within the fair value hierarchy based on the lowest level input that is significant to the fair value measurement. Assets and Liabilities on Our Consolidated Balance Sheets Measured at Fair Value on a Recurring Basis The table below presents our assets and liabilities measured on our consolidated balance sheets at fair value on a recurring basis subsequent to initial recognition, including instruments where we have elected the fair value option, as of September 30, 2015 and December 31, 2014 . Table 16.1 — Assets and Liabilities on Our Consolidated Balance Sheets Measured at Fair Value on a Recurring Basis September 30, 2015 Level 1 Level 2 Level 3 Netting Adjustment (1) Total (in millions) Assets: Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ — $ 32,573 $ 3,004 $ — $ 35,577 Fannie Mae — 7,779 57 — 7,836 Ginnie Mae — 171 2 — 173 CMBS — 10,938 3,638 — 14,576 Subprime — — 13,809 — 13,809 Option ARM — — 3,882 — 3,882 Alt-A and other — 14 3,632 — 3,646 Obligations of states and political subdivisions — — 1,480 — 1,480 Manufactured housing — — 594 — 594 Total available-for-sale securities, at fair value — 51,475 30,098 — 81,573 Trading, at fair value: Mortgage-related securities: Freddie Mac — 15,881 443 — 16,324 Fannie Mae — 6,845 42 — 6,887 Ginnie Mae — 290 — — 290 Other — 145 2 — 147 Total mortgage-related securities — 23,161 487 — 23,648 U.S. Treasury securities 12,158 — — — 12,158 Total trading securities, at fair value 12,158 23,161 487 — 35,806 Total investments in securities 12,158 74,636 30,585 — 117,379 Mortgage loans: Held-for-sale, at fair value — 20,880 — — 20,880 Derivative assets, net: Interest-rate swaps — 5,629 — — 5,629 Option-based derivatives — 4,841 — — 4,841 Other — 103 19 — 122 Subtotal, before netting adjustments — 10,573 19 — 10,592 Netting adjustments (1) — — — (9,987 ) (9,987 ) Total derivative assets, net — 10,573 19 (9,987 ) 605 Other assets: Guarantee asset — — 1,604 — 1,604 Total assets carried at fair value on a recurring basis $ 12,158 $ 106,089 $ 32,208 $ (9,987 ) $ 140,468 Liabilities: Debt securities of consolidated trusts held by third parties, at fair value $ — $ 131 $ — $ — $ 131 Other debt, at fair value — 7,379 — — 7,379 Derivative liabilities, net: Interest-rate swaps — 14,843 7 — 14,850 Option-based derivatives — 143 — — 143 Other — 178 35 — 213 Subtotal, before netting adjustments — 15,164 42 — 15,206 Netting adjustments (1) — — — (13,536 ) (13,536 ) Total derivative liabilities, net — 15,164 42 (13,536 ) 1,670 Other liabilities: All other, at fair value — — 7 — 7 Total liabilities carried at fair value on a recurring basis $ — $ 22,674 $ 49 $ (13,536 ) $ 9,187 Fair Value at December 31, 2014 Level 1 Level 2 Level 3 Netting Adjustment (1) Total (in millions) Assets: Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ — $ 34,868 $ 4,231 $ — $ 39,099 Fannie Mae — 11,228 85 — 11,313 Ginnie Mae — 195 4 — 199 CMBS — 18,348 3,474 — 21,822 Subprime — — 20,589 — 20,589 Option ARM — — 5,649 — 5,649 Alt-A and other — 16 5,027 — 5,043 Obligations of states and political subdivisions — — 2,198 — 2,198 Manufactured housing — — 638 — 638 Total available-for-sale securities, at fair value — 64,655 41,895 — 106,550 Trading, at fair value: Mortgage-related securities: Freddie Mac — 16,542 927 — 17,469 Fannie Mae — 5,867 232 — 6,099 Ginnie Mae — 15 1 — 16 Other — 167 4 — 171 Total mortgage-related securities — 22,591 1,164 — 23,755 U.S. Treasury securities 6,682 — — — 6,682 Total trading securities, at fair value 6,682 22,591 1,164 — 30,437 Total investments in securities 6,682 87,246 43,059 — 136,987 Mortgage loans: Held-for-sale, at fair value — 12,130 — — 12,130 Derivative assets, net: Interest-rate swaps — 5,653 — — 5,653 Option-based derivatives 5 4,219 — — 4,224 Other — 40 27 — 67 Subtotal, before netting adjustments 5 9,912 27 — 9,944 Netting adjustments (1) — — — (9,122 ) (9,122 ) Total derivative assets, net 5 9,912 27 (9,122 ) 822 Other assets: Guarantee asset, at fair value — — 1,626 — 1,626 All other, at fair value — — 5 — 5 Total other assets — — 1,631 — 1,631 Total assets carried at fair value on a recurring basis $ 6,687 $ 109,288 $ 44,717 $ (9,122 ) $ 151,570 Liabilities: Debt securities of consolidated trusts held by third parties, at fair value $ — $ 42 $ — $ — $ 42 Other debt, at fair value — 5,820 — — 5,820 Derivative liabilities, net: Interest-rate swaps — 13,316 — — 13,316 Option-based derivatives 28 99 — — 127 Other — 80 37 — 117 Subtotal, before netting adjustments 28 13,495 37 — 13,560 Netting adjustments (1) — — — (11,597 ) (11,597 ) Total derivative liabilities, net 28 13,495 37 (11,597 ) 1,963 Total liabilities carried at fair value on a recurring basis $ 28 $ 19,357 $ 37 $ (11,597 ) $ 7,825 (1) Represents counterparty netting, cash collateral netting and net derivative interest receivable or payable. The net cash collateral posted was $4.2 billion and $3.2 billion , respectively, at September 30, 2015 and December 31, 2014. The net interest receivable (payable) of derivative assets and derivative liabilities was $(0.6) billion and $(0.7) billion at September 30, 2015 and December 31, 2014, respectively, which was mainly related to interest-rate swaps. Changes in Fair Value Levels We monitor the availability of observable market data to assess the appropriate classification of financial instruments within the fair value hierarchy and transfer assets and liabilities between Level 1, Level 2, and Level 3 accordingly. Observable market data includes, but is not limited to, quoted prices and market transactions. Changes in economic conditions or the volume and level of activity in a market generally will drive changes in availability of observable market data. Changes in availability of observable market data, which also may result in changing the valuation technique used, are generally the cause of transfers between Level 1, 2, or 3. During the three and nine months ended September 30, 2015 and the three and nine months ended September 30, 2014 , our transfers between Level 1 and Level 2 assets and liabilities were less than $1 million. The table below presents a reconciliation of all assets and liabilities measured on our consolidated balance sheets at fair value on a recurring basis using significant unobservable inputs (Level 3) during the three and nine months ended September 30, 2015 and the three and nine months ended September 30, 2014 , including transfers into and out of Level 3 assets and liabilities. The table also presents gains and losses due to changes in fair value, including both realized and unrealized gains and losses, recognized in our consolidated statements of comprehensive income for Level 3 assets and liabilities during the three and nine months ended September 30, 2015 and the three and nine months ended September 30, 2014 . When assets and liabilities are transferred between levels, we recognize the transfer as of the beginning of the period. Table 16.2 — Assets and Liabilities on Our Consolidated Balance Sheets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs Three Months Ended September 30, 2015 Realized and unrealized gains (losses) Balance, June 30, 2015 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 (2) Transfers out of Level 3 (2) Balance, September 30, 2015 Unrealized gains (losses) still held (in millions) Assets Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ 3,143 $ 3 $ 37 $ 40 $ 186 $ 34 $ (155 ) $ (88 ) $ — $ (156 ) $ 3,004 $ (1 ) Fannie Mae 104 — — — — — — (7 ) — (40 ) 57 — Ginnie Mae 2 — — — — — — — — — 2 — CMBS 3,534 4 108 112 — — — (8 ) — — 3,638 4 Subprime 15,802 177 (176 ) 1 — — (1,392 ) (602 ) — — 13,809 37 Option ARM 4,833 66 4 70 — — (832 ) (189 ) — — 3,882 30 Alt-A and other 4,222 84 (82 ) 2 — — (346 ) (232 ) — (14 ) 3,632 35 Obligations of states and political subdivisions 1,627 — 1 1 — — — (148 ) — — 1,480 — Manufactured housing 614 — (3 ) (3 ) — — — (17 ) — — 594 — Total available-for-sale mortgage-related securities 33,881 334 (111 ) 223 186 34 (2,725 ) (1,291 ) — (210 ) 30,098 105 Trading, at fair value: Mortgage-related securities: Freddie Mac 345 (29 ) — (29 ) 212 — — (2 ) 28 (111 ) 443 (29 ) Fannie Mae 171 (6 ) — (6 ) — — (1 ) — — (122 ) 42 (6 ) Ginnie Mae — — — — — — — — — — — — Other 3 — — — — — — (1 ) — — 2 — Total trading mortgage-related securities 519 (35 ) — (35 ) 212 — (1 ) (3 ) 28 (233 ) 487 (35 ) Other assets: Guarantee asset (3) 1,652 (6 ) — (6 ) — 131 — (173 ) — — 1,604 (6 ) All other, at fair value 7 (7 ) — (7 ) — — — — — — — — Total other assets 1,659 (13 ) — (13 ) — 131 — (173 ) — — 1,604 (6 ) Realized and unrealized (gains) losses Balance, June 30, 2015 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 (2) Transfers out of Level 3 (2) Balance, September 30, 2015 Unrealized (gains) losses still held (in millions) Liabilities Net derivatives (4) $ 22 $ (12 ) $ — $ (12 ) $ — $ — $ — $ 13 $ — $ — $ 23 $ 1 Other Liabilities: All other, at fair value — 7 — 7 — — — — — — 7 14 Nine Months Ended September 30, 2015 Realized and unrealized gains (losses) Balance, January 1, 2015 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 (2) Transfers out of Level 3 (2) Balance, September 30, 2015 Unrealized gains (losses) still held (in millions) Assets Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ 4,231 $ 29 $ 19 $ 48 $ 800 $ 34 $ (527 ) $ 214 $ — $ (1,796 ) $ 3,004 $ (1 ) Fannie Mae 85 — (1 ) (1 ) — — — (18 ) 1 (10 ) 57 — Ginnie Mae 4 — — — — — — (2 ) — — 2 — CMBS 3,474 (21 ) 209 188 — — (2 ) (22 ) — — 3,638 (21 ) Subprime 20,589 704 (71 ) 633 — — (5,532 ) (1,881 ) — — 13,809 109 Option ARM 5,649 186 63 249 — — (1,522 ) (494 ) — — 3,882 105 Alt-A and other 5,027 221 (55 ) 166 — — (919 ) (642 ) — — 3,632 — Obligations of states and political subdivisions 2,198 — (11 ) (11 ) — — — (707 ) — — 1,480 (1 ) Manufactured housing 638 (1 ) 8 7 — — (1 ) (50 ) — — 594 80 Total available-for-sale mortgage-related securities 41,895 1,118 161 1,279 800 34 (8,503 ) (3,602 ) 1 (1,806 ) 30,098 271 Trading, at fair value: Mortgage-related securities: Freddie Mac 927 (40 ) — (40 ) 212 — (10 ) (6 ) 26 (666 ) 443 (40 ) Fannie Mae 232 4 — 4 — — (95 ) — — (99 ) 42 (8 ) Ginnie Mae 1 — — — — — (1 ) — — — — — Other 4 3 — 3 — — (3 ) (2 ) — — 2 — Total trading mortgage-related securities 1,164 (33 ) — (33 ) 212 — (109 ) (8 ) 26 (765 ) 487 (48 ) Other assets: Guarantee asset (3) 1,626 (30 ) — (30 ) — 457 — (449 ) — — 1,604 (30 ) All other, at fair value 5 (5 ) — (5 ) — — — — — — — — Total other assets 1,631 (35 ) — (35 ) — 457 — (449 ) — — 1,604 (30 ) Realized and unrealized (gains) losses Balance, Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 (2) Transfers out of Level 3 (2) Balance, September 30, 2015 Unrealized (gains) losses still held (in millions) Liabilities Net derivatives (4) $ 10 $ 5 $ — $ 5 $ — $ — $ — $ 8 $ — $ — $ 23 $ 13 Other Liabilities: All other, at fair value — 7 — 7 — — — — — — 7 12 Three months ended September 30, 2014 Realized and unrealized gains (losses) Balance, June 30, 2014 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 Transfers out of Level 3 Balance, September 30, 2014 Unrealized gains (losses) still held (in millions) Assets Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ 2,892 $ 3 $ 1 $ 4 $ 4,364 $ — $ (2,077 ) $ (34 ) $ — $ (843 ) $ 4,306 $ — Fannie Mae 136 — (1 ) (1 ) — — — (4 ) 45 (70 ) 106 — Ginnie Mae 5 — — — — — — (1 ) — — 4 — CMBS 3,326 — 41 41 — — — (15 ) — — 3,352 — Subprime 24,291 (53 ) 1,068 1,015 — — (2,423 ) (182 ) — — 22,701 (125 ) Option ARM 6,231 (12 ) 172 160 — — (616 ) (68 ) — — 5,707 (39 ) Alt-A and other 6,454 (85 ) 96 11 — — (1,021 ) 69 — — 5,513 (2 ) Obligations of states and political subdivisions 2,898 — (1 ) (1 ) — — — (404 ) — — 2,493 — Manufactured housing 668 — — — — — — (18 ) — — 650 — Total available-for-sale mortgage-related securities 46,901 (147 ) 1,376 1,229 4,364 — (6,137 ) (657 ) 45 (913 ) 44,832 (166 ) Trading, at fair value: Mortgage-related securities: Freddie Mac 1,252 41 — 41 915 7 (443 ) (13 ) — (864 ) 895 42 Fannie Mae 167 (2 ) — (2 ) — — — (3 ) 15 — 177 (2 ) Ginnie Mae — — — — — — — — — — — — Other 6 — — — — — — (2 ) — — 4 — Total trading mortgage-related securities 1,425 39 — 39 915 7 (443 ) (18 ) 15 (864 ) 1,076 40 Other assets: Guarantee asset (3) 1,587 (41 ) — (41 ) — 142 — (118 ) — — 1,570 (41 ) All other, at fair value 12 (4 ) — (4 ) — — — — — — 8 (4 ) Total other assets 1,599 (45 ) — (45 ) — 142 — (118 ) — — 1,578 (45 ) Realized and unrealized (gains) losses Balance, June 30, 2014 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 Transfers out of Level 3 Balance, September 30, 2014 Unrealized (gains) losses still held (in millions) Liabilities Other debt, at fair value $ 1,000 $ — $ — $ — $ — $ — $ — $ (1,000 ) $ — $ — $ — $ — Net derivatives (4) 58 (66 ) — (66 ) — — — 19 — — 11 (49 ) Nine months ended September 30, 2014 Realized and unrealized gains (losses) Balance, January 1, 2014 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 Transfers out of Level 3 Balance, September 30, 2014 Unrealized gains (losses) still held (in millions) Assets Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ 1,939 $ 1 $ 3 $ 4 $ 5,567 $ — $ (3,086 ) $ (79 ) $ 3 $ (42 ) $ 4,306 $ — Fannie Mae 131 — (4 ) (4 ) 48 — (55 ) (15 ) 1 — 106 — Ginnie Mae 12 — — — — — (6 ) (3 ) 1 — 4 — CMBS 3,109 — 269 269 — — — (26 ) — — 3,352 — Subprime 27,499 (456 ) 2,556 2,100 — — (5,628 ) (1,270 ) — — 22,701 (582 ) Option ARM 6,574 (41 ) 174 133 — — (791 ) (209 ) — — 5,707 (72 ) Alt-A and other 8,706 86 232 318 — — (3,409 ) (102 ) — — 5,513 (33 ) Obligations of states and political subdivisions 3,495 1 71 72 1 — (13 ) (1,062 ) — — 2,493 — Manufactured housing 684 — 21 21 — — — (55 ) — — 650 — Total available-for-sale mortgage-related securities 52,149 (409 ) 3,322 2,913 5,616 — (12,988 ) (2,821 ) 5 (42 ) 44,832 (687 ) Trading, at fair value: Mortgage-related securities: Freddie Mac 343 26 — 26 2,064 42 (1,480 ) (33 ) — (67 ) 895 30 Fannie Mae 221 (20 ) — (20 ) 14 — — (7 ) — (31 ) 177 (20 ) Ginnie Mae 74 — — — — — (70 ) (4 ) — — — (2 ) Other 8 (1 ) — (1 ) — — — (3 ) — — 4 (1 ) Total trading mortgage-related securities 646 5 — 5 2,078 42 (1,550 ) (47 ) — (98 ) 1,076 7 Other assets: Guarantee asset (3) 1,611 (146 ) — (146 ) — 290 — (185 ) — — 1,570 (145 ) All other, at fair value 9 (1 ) — (1 ) — — — — — — 8 (1 ) Total other assets 1,620 (147 ) — (147 ) — 290 — (185 ) — — 1,578 (146 ) Realized and unrealized (gains) losses Balance, January 1, 2014 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 Transfers out of Level 3 Balance, September 30, 2014 Unrealized (gains) losses still held (in millions) Liabilities Other debt, at fair value $ 1,528 $ (7 ) $ — $ (7 ) $ — $ — $ — $ (1,521 ) $ — $ — $ — $ — Net derivatives (4) 325 (95 ) — (95 ) — — — 62 — (281 ) 11 (30 ) (1) Changes in fair value for available-for-sale securities are recorded in AOCI, while gains and losses from sales are recorded in other gains (losses) on investment securities recognized in earnings on our consolidated statements of comprehensive income. For mortgage-related securities classified as trading, the realized and unrealized gains (losses) are recorded in other gains (losses) on investment securities recognized in earnings on our consolidated statements of comprehensive income. (2) Transfers out of Level 3 during the three and nine months ended September 30, 2015 consist primarily of certain mortgage-related securities due to an increased volume and level of activity in the market and availability of price quotes from dealers and third-party pricing services. Transfers into Level 3 during the three and nine months ended September 30, 2015 consist primarily of certain mortgage-related securities due to a lack of market activity and relevant price quotes from dealers and third-party pricing services. (3) Changes in fair value of the guarantee asset are recorded in other income on our consolidated statements of comprehensive income. (4) Amounts are prior to counterparty netting, cash collateral netting, net trade/settle receivable or payable and net derivative interest receivable or payable. Assets on Our Consolidated Balance Sheets Measured at Fair Value on a Non-Recurring Basis We may be required, from time to time, to measure certain assets at fair value on a non-recurring basis after our initial recognition. These adjustments usually result from the application of lower-of-cost-or-fair-value accounting or measurement of impairment based on the fair value of the underlying collateral. These assets include impaired held-for-investment single-family and multifamily mortgage loans, held-for-sale single-family and multifamily loans for which we have not elected the fair value option and REO, net. The table below presents assets measured on our consolidated balance sheets at fair value on a non-recurring basis as of September 30, 2015 and December 31, 2014, respectively. Table 16.3 — Assets on Our Consolidated Balance Sheets Measured at Fair Value on a Non-Recurring Basis September 30, 2015 December 31, 2014 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (in millions) Assets measured at fair value on a non-recurring basis: Mortgage loans (1) $ — $ 926 $ 6,039 $ 6,965 $ — $ 80 $ 8,962 $ 9,042 REO, net (2) — — 1,240 1,240 — — 1,665 1,665 Total assets measured at fair value on a non-recurring basis $ — $ 926 $ 7,279 $ 8,205 $ — $ 80 $ 10,627 $ 10,707 (1) Includes impaired mortgage loans that are classified as held-for-investment and have been measured for impairment based on the fair value of the underlying collateral, and held-for-sale mortgage loans where the fair value is below cost. (2) Represents the fair value of foreclosed properties that were measured at fair value subsequent to their initial classification as REO, net. The carrying amount of REO, net was reduced to fair value of $1.2 billion , less estimated costs to sell of $81 million (or approximately $1.1 billion ) at September 30, 2015 . The carrying amount of REO, net was reduced to fair value of $1.7 billion , less estimated costs to sell of $109 million (or approximately $1.6 billion ) at December 31, 2014 . Valuation Processes and Controls Over Fair Value Measurement We designed our control processes so that our fair value measurements are appropriate and reliable, that they are based on observable inputs where possible, and that our valuation approaches are consistently applied and the assumptions and inputs are reasonable. Our control processes provide a framework for segregation of duties and oversight of our fair value methodologies, techniques, validation procedures, and results. Valuation Techniques for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value We categorize assets and liabilities that we measure and report on our consolidated balance sheets at fair value within the fair value hierarchy based on the valuation techniques used to derive the fair value and our judgment regarding the observability of the related inputs. Mortgage Loans, Held-for-Sale During the three months ended June 30, 2015, we changed our valuation technique related to single-family mortgage loans held-for-sale. Mortgage loans, held-for-sale include certain deeply delinquent single-family loans accounted for at the lower-of-cost-or-fair-value on a non-recurring basis. Our single-family mortgage loans, held-for-sale are primarily valued using dealer quotes for these and similar whole loans, stratified by loan-to-value ratio and geographic location of the underlying property. The loan-to-value ratios are based on broker price opinions, which consider the physical condition of the property and use comparable sales and other market data in estimating the value. These loans are classified as Level 3 because the underlying assumptions regarding market pricing of delinquent loans are unobservable due to the low volume and level of activity in this market. Mortgage loans, held-for-sale includes certain multifamily loans that we intend to securitize. These loans are classified as Level 2 given the observable nature of our securitization pricing. See “NOTE 16: FAIR VALUE DISCLOSURES — Valuation Techniques for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value — Mortgage Loans, Held-for-Sale” in our 2014 Annual Report for more information. Quantitative Information about Level 3 Fair Value Measurements for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value The table below provides valuation techniques, the range, and the weighted average of significant unobservable inputs for assets and liabilities measured on our consolidated balance sheets at fair value on a recurring basis using unobservable inputs (Level 3) as of September 30, 2015 and December 31, 2014. Table 16.4 — Quantitative Information about Recurring Level 3 Fair Value Measurements for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value September 30, 2015 Total Fair Value Level 3 Fair Value Predominant Valuation Technique(s) Unobservable Inputs Type Range Weighted Average (dollars in millions) Recurring fair value measurements Assets Investments in securities Available-for-sale, at fair value Mortgage-related securities Freddie Mac $ 2,336 Discounted cash flows OAS (46) - 503 bps 89 bps 338 Risk metric Effective duration (1) (0.44) - 9.12 years 2.16 years 330 Other Total Freddie Mac $ 35,577 3,004 Fannie Mae 38 Single external source 19 Discounted cash flows Total Fannie Mae 7,836 57 Ginnie Mae 2 Discounted cash flows Total Ginnie Mae 173 2 CMBS 3,638 Risk metric Effective duration (1) 3.40 - 11.27 years 9.77 years Total CMBS 14,576 3,638 Subprime, option ARM, and Alt-A: Subprime 13,447 Median of external sources External pricing sources $72.4 - $76.6 $ 74.4 362 Other Total subprime 13,809 13,809 Option ARM 3,556 Median of external sources External pricing sources $67.3 - $73.5 $ 69.6 326 Other Total option ARM 3,882 3,882 Alt-A and other 2,908 Median of external sources External pricing sources $84.9 - $88.2 $ 86.5 724 Other Total Alt-A and other 3,646 3,632 Obligations of states and political subdivisions 1,331 Median of external sources External pricing sources $101.3 - $101.7 $ 101.5 149 Other Total obligations of states and political subdivisions 1,480 1,480 Manufactured housing 523 Median of external sources External pricing sources $91.4 - $94.8 $ 93.0 71 Other Total manufactured housing 594 594 Total available-for-sale mortgage-related securities 81,573 30,098 Trading, at fair value Mortgage-related securities Freddie Mac 266 Discounted cash flows OAS (145) - 1,542 bps 192 bps 149 Risk Metrics Effective duration (1) 2.07 - 14.72 years 7.33 years 28 Other Total Freddie Mac 16,324 443 Fannie Mae 42 Discounted cash flows Total Fannie Mae 6,887 42 Ginnie Mae 290 — Other 1 Discounted cash flows 1 Median of external sources Total other 147 2 Total trading mortgage-related securities 23,648 487 Total investments in securities $ 105,221 $ 30,585 Other assets: Guarantee asset, at fair value $ 1,494 Discounted cash flows OAS 17 - 198 bps 56 bps 110 Other Total guarantee asset, at fair value $ 1,604 1,604 Liabilities Net derivatives 23 Other Total net derivatives 1,065 23 Other liabilities: All other, at fair value 7 Other Total all other, at fair value 7 7 December 31, 2014 Total Fair Value Level 3 Fair Value Predominant Valuation Technique(s) Unobservable Inputs Type Range Weighted Average (dollars in millions) Recurring fair value measurements Assets Investments in securities Available-for-sale, at fair value Mortgage-related securities Freddie Mac $ 2,980 Discounted cash flows OAS (146) - 144 bps 83 bps 375 Risk metric Effective duration (1) 0.18 - 7.54 years 3.82 years 143 Median of external sources External pricing sources $103.2 - $104.4 $ 103.8 733 Other Total Freddie Mac $ 39,099 4,231 Fannie Mae 47 Median of external sources 29 Discounted cash flows 9 Other Total Fannie Mae 11,313 85 Ginnie Mae 4 Discounted cash flows Total Ginnie Mae 199 4 CMBS 2,726 Risk Metrics Effective duration (1) 5.84 - 10.65 years 9.59 years 748 Discounted cash flows OAS 181 -766 bps 421 bps Total CMBS 21,822 3,474 Subprime, option ARM, and Alt-A: Subprime 18,789 Median of external sources External pricing sources $71.0 - $76.1 $ 73.5 1,800 Other Total subprime 20,589 20,589 Option ARM 5,205 Median of external sources External pricing sources $65.3 - $70.9 $ 67.9 444 Other Total option ARM 5,649 5,649 Alt-A and other 4,116 Median of external sources External pricing sources $83.0 - $86.2 $ 84.5 911 Other Total Alt-A and other 5,043 5,027 Obligations of states and political subdivisions 1,992 Median of external sources External pricing sources $101.3 - $101.9 $ 101.6 206 Other Total obligations of states and political subdivisions 2,198 2,198 Manufactured housing 515 Median of external sources External pricing sources $89.3 - $92.4 $ 91.0 123 Single external source External pricing source $89.8 - $89.8 $ 89.8 Total manufactured housing 638 638 Total available-for-sale mortgage-related securities 106,550 41,895 Trading, at fair value Mortgage-related securities Freddie Mac 478 Discounted cash flows OAS (219) - 9,748 bps 169 bps 320 Risk Metrics Effective duration (1) 1.78 - 2.30 years 2.27 years 129 Other Total Freddie Mac 17,469 927 Fannie Mae 207 Discounted cash flows OAS (173) - 2,027 bps 204 bps 25 Other Total Fannie Mae 6,099 232 Ginnie Mae 16 1 Other 3 Median of external sources 1 Discounted cash flows Total other 171 4 Total trading mortgage-related securities 23,755 1,164 Total investments in securities $ 130,305 $ 43,059 Other assets: Guarantee asset, at fair value $ 1,285 Discounted cash flows OAS 17 - 202 bps 53 bps 341 Median of external sources External pricing sources $10.0 - $21.2 $ 16.6 Total guarantee asset, at fair value $ 1,626 1,626 All other, at fair value 5 Other Total all other, at fair value 5 5 Total other assets 1,631 1,631 Liabilities Net derivatives 10 Other Total net derivatives 1,141 10 (1) Effective duration is used as a proxy to represent the aggregate impact of key rate durations. The table below provides valuation techniques, the range, and the weighted average of significant unobservable inputs for assets and liabilities measured on our consolidated balance sheets at fair value on a non-recurring basis using unobservable inputs (Level 3) as of September 30, 2015 and December 31, 2014. Table 16.5 — Quantitative Information about Non-Recurring Level 3 Fair Value Measurements for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value September 30, 2015 Total Fair Value Level 3 Fair Value Predominant Valuation Technique(s) Unobservable Inputs Type Range Weighted Average (dollars in millions) Non-recurring fair value measurements Mortgage loans $ 6,965 $ 6,039 Internal model Historical sales $3,000 - $854,400 $165,048 Internal model Housing sales index 42 - 418 bps 87 bps Third-party appraisal Property value $1 million - $30 million $28 million Income capitalization (1) Capitalization rates 6%- 9% 7% Median of external sources External pricing sources $39.5 - $95.4 $72.0 REO, net $ 1,240 $ 1,240 Internal model Historical sales proceeds $3,000 - $626,005 $154,140 Internal model Housing sales index 44 - 418 bps 86 bps December 31, 2014 Total Fair Value Level 3 Fair Value Predominant Valuation Technique(s) Unobservable Inputs Type Range Weighted Average (dollars in millions) Non-recurring fair value measurements Mortgage loans $ 8,962 $ 8,962 Internal model Historical sales $3,000 - $896,519 $162,556 Internal model Housing sales index 38 - 294 bps 82 bps Third-party appraisal Property value $11 million - $44 million $31 million Income capitalization (1) Capitalization rates 6%- 9% 7% REO, net $ 1,665 $ 1,665 Internal model Historical sales proceeds $3,008 - $896,519 $154,165 Internal model Housing sales index 38 - 294 bps 82 bps (1) The predominant valuation technique used for multifamily mortgage loans. Certain loans in this population are valued using other techniques, and the capitalization rate for those is not represented in the “Range” or “Weighted Average” above. Fair Value of Financial Instruments The table below presents the carrying value and estimated fair value of our financial instruments as of September 30, 2015 and December 31, 2014. Table 16.6 — Fair Value of Financial Instruments September 30, 2015 Fair Value GAAP Carrying Amount Level 1 Level 2 Level 3 Netting Adjustments Total (in millions) Financial Assets Cash and cash equivalents $ 5,000 $ 5,000 $ — $ — $ — $ 5,000 Restricted cash and cash equivalents 15,108 15,108 — — — 15,108 Federal funds sold and securities purchased under agreements to resell 38,738 — 38,738 — — 38,738 Investments in securities: Available-for-sale, at fair value 81,573 — 51,475 30,098 — 81,573 Trading, at fair value 35,806 12,158 23,161 487 — 35,806 Total investments in securities 117,379 12,158 74,636 30,585 — 117,379 Mortgage loans: Mortgage loans held by consolidated trusts 1,615,291 — 1,467,806 175,951 — 1,643,757 Unsecuritized mortgage loans 134,576 — 35,119 101,759 — 136,878 Total mortgage loans 1,749,867 — 1,502,925 277,710 — 1,780,635 Derivative assets, net 605 — 10,573 19 (9,987 ) 605 Guarantee asset 1,604 — — 1,812 — 1,812 Advances to lenders 858 — 858 — — 858 Total financial assets $ 1,929,159 $ 32,266 $ 1,627,730 $ 310,126 $ (9,987 ) $ 1,960,135 Financial Liabilities Debt, net: Debt securities of consolidated trusts held by third parties $ 1,539,108 $ — $ 1,623,303 $ 976 $ — $ 1,624,279 Other debt 408,281 — 405,038 10,768 — 415,806 Total debt, net 1,947,389 — 2,028,341 11,744 — 2,040,085 Derivative liabilities, net 1,670 — 15,164 42 (13,536 ) 1,670 Guarantee obligation 1,573 — — 2,995 — 2,995 Total financial liabilities $ 1,950,632 $ — $ 2,043,505 $ 14,781 $ (13,536 ) $ 2,044,750 December 31, 2014 Fair Value GAAP Carrying Amount Level 1 Level 2 Level 3 Netting Adjustments Total (in millions) Financial Assets Cash and cash equivalents $ 10,928 $ 10,928 $ — $ — $ — $ 10,928 Restricted cash and cash equivalents 8,535 8,535 — — — 8,535 Federal funds sold and securities purchased under agreements to res

Legal Contingencies

Legal Contingencies	9 Months Ended
	Sep. 30, 2015
Commitments and Contingencies Disclosure [Abstract]
LEGAL CONTINGENCIES	NOTE 17: LEGAL CONTINGENCIES We are involved as a party in a variety of legal and regulatory proceedings arising from time to time in the ordinary course of business including, among other things, contractual disputes, personal injury claims, employment-related litigation and other legal proceedings incidental to our business. We are frequently involved, directly or indirectly, in litigation involving mortgage loan foreclosures. From time to time, we are also involved in proceedings arising from our termination of a seller/servicer’s eligibility to sell mortgage loans to, and/or service mortgage loans for, us. In these cases, the former seller/servicer sometimes seeks damages against us for wrongful termination under a variety of legal theories. In addition, we are sometimes sued in connection with the origination or servicing of mortgage loans. These suits typically involve claims alleging wrongful actions of seller/servicers. Our contracts with our seller/servicers generally provide for indemnification of Freddie Mac against liability arising from seller/servicers' wrongful actions with respect to mortgage loans sold to or serviced for Freddie Mac. Litigation and claims resolution are subject to many uncertainties and are not susceptible to accurate prediction. In accordance with the accounting guidance for contingencies, we reserve for litigation claims and assessments asserted or threatened against us when a loss is probable (as defined in such guidance) and the amount of the loss can be reasonably estimated. Putative Securities Class Action Lawsuit: Ohio Public Employees Retirement System (“OPERS”) vs. Freddie Mac, Syron, et al . This putative securities class action lawsuit was filed against Freddie Mac and certain former officers on January 18, 2008 in the U.S. District Court for the Northern District of Ohio purportedly on behalf of a class of purchasers of Freddie Mac stock from August 1, 2006 through November 20, 2007. FHFA later intervened as Conservator, and the plaintiff amended its complaint on several occasions. The plaintiff alleged, among other things, that the defendants violated federal securities laws by making false and misleading statements concerning our business, risk management, and the procedures we put into place to protect the company from problems in the mortgage industry. The plaintiff sought unspecified damages and interest, and reasonable costs and expenses, including attorney and expert fees. On October 8, 2013, defendants filed motions to dismiss the complaint. On October 31, 2014, the Court granted defendants’ motions and dismissed the case in its entirety against all defendants, with prejudice. On November 25, 2014, plaintiff filed a notice of appeal in the U.S. Court of Appeals for the Sixth Circuit. At present, it is not possible for us to predict the probable outcome of this lawsuit or any potential effect on our business, financial condition, liquidity, or results of operations. In addition, we are unable to reasonably estimate the possible loss or range of possible loss in the event of an adverse judgment in the foregoing matter due to the following factors, among others: the inherent uncertainty of the appellate process; the inherent uncertainty of pre-trial litigation in the event the case is ultimately remanded to the District Court in whole or in part; and the fact that the District Court has not yet ruled upon motions for class certification or summary judgment. In particular, absent resolution of the appellate process, the certification of a class, the identification of a class period, and the identification of the alleged statement or statements that survive dispositive motions, we cannot reasonably estimate any possible loss or range of possible loss. Litigation Related to the Taylor, Bean & Whitaker (TBW) Bankruptcy On August 24, 2009, TBW, which had been one of our single-family seller/servicers, filed for bankruptcy in the U.S. Bankruptcy Court for the Middle District of Florida. We entered into a settlement with TBW and the TBW creditors' committee regarding the TBW bankruptcy in 2011. However, we continue to be involved in litigation with other parties relating to the TBW bankruptcy, as described below. On or about May 14, 2010, certain underwriters at Lloyds, London and London Market Insurance Companies brought an adversary proceeding in the U.S. Bankruptcy Court for the Middle District of Florida against TBW, Freddie Mac and other parties seeking a declaration rescinding $90 million of mortgage bankers bonds providing fidelity and errors and omissions insurance coverage. Several excess insurers on the bonds thereafter filed similar claims in that action. Freddie Mac has filed a proof of loss under the bonds. The underwriters moved for partial summary judgment against Freddie Mac in April 2013. The Court denied this motion on March 27, 2014, and the underwriters subsequently appealed the denial of the motion to the U.S. District Court. Numerous additional motions for summary judgment filed by the parties, including by Freddie Mac, are pending. On February 19, 2015, the Court granted summary judgment against TBW on its claims. Freddie Mac has moved for a clarification that the Court’s judgment does not apply to Freddie Mac’s separate claims against Lloyds. On September 16, 2015, TBW advised the Court that a settlement had been reached. Documentation of the settlement agreement in a form satisfactory to the parties, including Freddie Mac, is proceeding, and must be submitted to the Court for approval. On December 29, 2014, Freddie Mac filed an action in the U.S. District Court for the Southern District of New York against certain underwriters at Lloyds, London and several other insurance carriers seeking coverage for $111 million in losses under Freddie Mac’s primary and excess financial institution bonds. The losses resulted from fraud perpetrated by senior officers and employees of TBW. At present, it is not possible for us to predict the probable outcome of this lawsuit. On September 15, 2014, Freddie Mac filed a lawsuit in the Circuit Court of the 11th Judicial Circuit in Miami-Dade County, Florida against Deloitte & Touche LLP (Deloitte) for negligent misrepresentation / false information negligently supplied for the guidance of others. The complaint alleges, among other items, that Deloitte, as TBW’s independent auditor, made and supplied false information during the course of its professional audits of TBW, as a result of which Freddie Mac incurred damages in excess of $1.3 billion . Freddie Mac seeks damages and interest, as well as costs. On October 8, 2014, Deloitte removed the case from state court to the U.S. District Court for the Southern District of Florida. Discovery is proceeding. At present, it is not possible for us to predict the probable outcome of this lawsuit. LIBOR Lawsuit On March 14, 2013, Freddie Mac filed a lawsuit in the U.S. District Court for the Eastern District of Virginia against the British Bankers Association and the 16 U.S. Dollar LIBOR panel banks and a number of their affiliates. The case was subsequently transferred to the U.S. District Court for the Southern District of New York. The complaint alleges, among other things, that the defendants fraudulently and collusively depressed LIBOR, a benchmark interest rate indexed to trillions of dollars of financial products, and asserts claims for antitrust violations, breach of contract, tortious interference with contract and fraud. Freddie Mac filed an amended complaint on July 22, 2013, and a second amended complaint on October 6, 2014. The defendants have moved to dismiss the second amended complaint; Freddie Mac has opposed this motion. On August 4, 2015, the Court dismissed the portion of our claim related to antitrust violations and fraud. On August 18, 2015, Freddie Mac filed a motion for reconsideration. Litigation Concerning the Purchase Agreement Since July 2013, a number of lawsuits have been filed against us concerning the August 2012 amendment to the Purchase Agreement, which created the net worth sweep dividend provisions of the senior preferred stock. The plaintiffs in the lawsuits allege that they are holders of common stock and/or junior preferred stock issued by Freddie Mac and Fannie Mae. (For purposes of this discussion, junior preferred stock refers to the various series of preferred stock of Freddie Mac and Fannie Mae other than the senior preferred stock issued to Treasury.) It is possible that similar lawsuits will be filed in the future. The lawsuits against us are described below. Litigation in the U.S. District Court for the District of Columbia In re Fannie Mae/Freddie Mac Senior Preferred Stock Purchase Agreement Class Action Litigations . This case is the result of the consolidation of three putative class action lawsuits: Cacciapelle and Bareiss vs. Federal National Mortgage Association, Federal Home Loan Mortgage Corporation and FHFA , filed on July 29, 2013; American European Insurance Company vs. Federal National Mortgage Association, Federal Home Loan Mortgage Corporation and FHFA , filed on July 30, 2013; and Marneu Holdings, Co. vs. FHFA, Treasury, Federal National Mortgage Association and Federal Home Loan Mortgage Corporation , filed on September 18, 2013. (The Marneu case was also filed as a shareholder derivative lawsuit.) A consolidated amended complaint was filed on December 3, 2013. In the consolidated amended complaint, plaintiffs allege, among other items, that the August 2012 amendment to the Purchase Agreement breached Freddie Mac's and Fannie Mae's respective contracts with the holders of junior preferred stock and common stock and the covenant of good faith and fair dealing inherent in such contracts. Plaintiffs sought unspecified damages, equitable and injunctive relief, and costs and expenses, including attorney and expert fees. The Cacciapelle and American European Insurance Company lawsuits were filed purportedly on behalf of a class of purchasers of junior preferred stock issued by Freddie Mac or Fannie Mae who held stock prior to, and as of, August 17, 2012. The Marneu lawsuit was filed purportedly on behalf of a class of purchasers of junior preferred stock and purchasers of common stock issued by Freddie Mac or Fannie Mae over a not-yet-defined period of time. Arrowood Indemnity Company vs. Federal National Mortgage Association, Federal Home Loan Mortgage Corporation, FHFA and Treasury . This case was filed on September 20, 2013. The allegations and demands made by plaintiffs in this case were generally similar to those made by the plaintiffs in the In re Fannie Mae/Freddie Mac Senior Preferred Stock Purchase Agreement Class Action Litigations case described above. Plaintiffs in the Arrowood lawsuit also requested that, if injunctive relief were not granted, the Arrowood plaintiffs be awarded damages against the defendants in an amount to be determined including, but not limited to, the aggregate par value of their junior preferred stock, the total of which they stated to be approximately $42 million. American European Insurance Company, Cacciapalle and Miller vs. Treasury and FHFA . This case was filed as a shareholder derivative lawsuit, purportedly on behalf of Freddie Mac as a “nominal” defendant, on July 30, 2014. The complaint alleges that, through the August 2012 amendment to the Purchase Agreement, Treasury and FHFA breached their respective fiduciary duties to Freddie Mac, causing Freddie Mac to suffer damages. The plaintiffs asked that Freddie Mac be awarded compensatory damages and disgorgement, as well as attorneys’ fees, costs and other expenses. FHFA, joined by Freddie Mac and Fannie Mae, moved to dismiss the In re Fannie Mae/Freddie Mac Senior Preferred Stock Purchase Agreement Class Action Litigations case and the other related cases on January 17, 2014. Treasury filed a motion to dismiss the same day. On September 30, 2014, the District Court granted the motions and dismissed the plaintiffs’ claims. On October 9, 2014, Arrowood filed a notice of appeal of the District Court’s decision. On October 15, 2014, plaintiffs in the In re Fannie Mae/Freddie Mac Senior Preferred Stock Purchase Agreement Class Action Litigations case filed a notice of appeal of the District Court’s decision. The scope of this appeal includes the American European Insurance Company shareholder derivative lawsuit. Litigation in the U.S. Court of Federal Claims Reid and Fisher vs. the United States of America and Federal Home Loan Mortgage Corporation. This case was filed as a derivative lawsuit, purportedly on behalf of Freddie Mac as a “nominal” defendant, on February 26, 2014. The complaint alleges, among other items, that the net worth sweep dividend provisions of the senior preferred stock constitute an unlawful taking of private property for public use without just compensation. The plaintiffs ask that Freddie Mac be awarded just compensation for the U.S. government’s alleged taking of its property, attorneys’ fees, costs and other expenses. Rafter, Rattien and Pershing Square Capital Management vs. the United States of America et al. This case was filed as a shareholder derivative lawsuit, purportedly on behalf of Freddie Mac as a “nominal” defendant, on August 14, 2014. The complaint alleges that: (a) the net worth sweep dividend provisions of the senior preferred stock constitute an unlawful taking of private property for public use without just compensation; and (b) the U.S government breached an implied-in-fact contract with Freddie Mac. On September 2, 2015, plaintiffs filed an amended complaint, which contains one claim involving Freddie Mac. The amended complaint alleges that Freddie Mac’s charter is a contract with its common stockholders, and that, through the August 2012 amendment to the Purchase Agreement, the U.S. government breached the implied covenant of good faith and fair dealing inherent in such contract. Plaintiffs ask that they be awarded damages or other appropriate relief for the alleged breach of contract as well as attorneys’ fees, costs and expenses. Litigation in the U.S. District Court for the District of Delaware Jacobs and Hindes vs. FHFA and Treasury. This case was filed on August 17, 2015 as a putative class action lawsuit purportedly on behalf of a class of holders of preferred stock or common stock issued by Freddie Mac or Fannie Mae. The case was also filed as a shareholder derivative lawsuit, purportedly on behalf of Freddie Mac and Fannie Mae as “nominal” defendants. The complaint alleges, among other items, that the August 2012 amendment to the Purchase Agreement violated applicable state law and constituted a breach of contract, as well as a breach of covenants of good faith and fair dealing. Plaintiffs seek equitable and injunctive relief (including restitution of the monies paid by Freddie Mac and Fannie Mae to Treasury under the net worth sweep dividend), compensatory damages, attorneys’ fees, costs and expenses. At present, it is not possible for us to predict the probable outcome of the lawsuits discussed above in the U.S. District Courts for the District of Columbia and the District of Delaware and the U.S. Court of Federal Claims (including the outcome of any appeal) or any potential effect on our business, financial condition, liquidity, or results of operations. In addition, we are unable to reasonably estimate the possible loss or range of possible loss in the event of an adverse judgment in the foregoing matters due to a number of factors, including the inherent uncertainty of pre-trial litigation. In addition, with respect to the In re Fannie Mae/Freddie Mac Senior Preferred Stock Purchase Agreement Class Action Litigations case, the plaintiffs have not demanded a stated amount of damages they believe are due, and the Court has not certified a class.

Regulatory Capital

Regulatory Capital	9 Months Ended
	Sep. 30, 2015
Mortgage Banking [Abstract]
REGULATORY CAPITAL	NOTE 18: REGULATORY CAPITAL On October 9, 2008, FHFA announced that it was suspending capital classification of us during conservatorship in light of the Purchase Agreement. FHFA continues to monitor our capital levels, but the existing statutory and FHFA-directed regulatory capital requirements are not binding during conservatorship. We continue to provide quarterly submissions to FHFA on minimum capital. The table below summarizes our minimum capital requirements and deficits and net worth. Table 18.1 — Net Worth and Minimum Capital September 30, 2015 December 31, 2014 (in millions) GAAP net worth $ 1,299 $ 2,651 Core capital (deficit) (1)(2) $ (72,707 ) $ (71,415 ) Less: Minimum capital requirement (1) 19,364 20,090 Minimum capital surplus (deficit) (1) $ (92,071 ) $ (91,505 ) (1) Core capital and minimum capital figures for September 30, 2015 are estimates. FHFA is the authoritative source for our regulatory capital. (2) Core capital excludes certain components of GAAP total equity (i.e., AOCI and the liquidation preference of the senior preferred stock) as these items do not meet the statutory definition of core capital. At September 30, 2015 , our assets exceeded our liabilities under GAAP; therefore no draw is being requested from Treasury under the Purchase Agreement. As of September 30, 2015 , our aggregate funding received from Treasury under the Purchase Agreement was $71.3 billion . This aggregate funding amount does not include the initial $1 billion liquidation preference of senior preferred stock that we issued to Treasury in September 2008 as an initial commitment fee and for which no cash was received. We paid quarterly dividends of $0.9 billion , $0.7 billion and $3.9 billion on the senior preferred stock in cash in March 2015, June 2015 and September 2015, respectively, at the direction of the Conservator.

Selected Financial Statement Li

Selected Financial Statement Line Items	9 Months Ended
	Sep. 30, 2015
Selected Financial Statement Data [Abstract]
Selected Financial Statement Line Items	NOTE 19: SELECTED FINANCIAL STATEMENT LINE ITEMS The table below presents the significant components of other income (loss) and other expense on our consolidated statements of comprehensive income. Table 19.1 — Significant Components of Other Income (Loss) and Other Expense on Our Consolidated Statements of Comprehensive Income Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Other income (loss): Non-agency mortgage-related securities settlements (1) $ — $ 1,187 $ — $ 6,084 Gains (losses) on mortgage loans (197 ) 168 (1,321 ) 383 Other 322 441 889 862 Total other income (loss) $ 125 $ 1,796 $ (432 ) $ 7,329 Other expense: Property tax and insurance expense on held-for-sale loans $ (176 ) $ — $ (937 ) $ (62 ) Other (94 ) (43 ) (297 ) (137 ) Total other expense $ (270 ) $ (43 ) $ (1,234 ) $ (199 ) (1) Settlement agreements primarily related to lawsuits regarding our investments in certain non-agency mortgage-related securities is a significant component of other income during the three and nine months ended September 30, 2014 . For more information, see “NOTE 15: CONCENTRATION OF CREDIT AND OTHER RISKS — Non-Agency Mortgage-Related Security Issuers” in our 2014 Annual Report. The table below presents the significant components of other assets and other liabilities on our consolidated balance sheets. Table 19.2 — Significant Components of Other Assets and Other Liabilities on Our Consolidated Balance Sheets September 30, 2015 December 31, 2014 (in millions) Other assets: Accounts and other receivables (1) $ 4,527 $ 3,899 Current income tax receivable 1,718 1,048 Guarantee asset 1,604 1,626 Advances to lenders 858 — All other 1,079 1,121 Total other assets $ 9,786 $ 7,694 Other liabilities: Servicer liabilities $ 1,427 $ 1,847 Guarantee obligation 1,573 1,623 Accounts payable and accrued expenses 1,347 803 All other 1,307 785 Total other liabilities $ 5,654 $ 5,058 (1) Primarily consists of servicer receivables and other non-interest receivables. END OF CONSOLIDATED FINANCIAL STATEMENTS AND ACCOMPANYING NOTES

Summary of Significant Accoun25

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2015
Accounting Policies [Abstract]
Segment Reporting	We have three reportable segments, which are based on the type of business activities each performs — Single-family Guarantee, Investments, and Multifamily. See “NOTE 13: SEGMENT REPORTING” in our 2014 Annual Report for additional information.
Basis of Presentation	Basis of Presentation The accompanying unaudited condensed consolidated financial statements have been prepared in accordance with GAAP for interim financial information and include our accounts as well as the accounts of other entities in which we have a controlling financial interest. All intercompany balances and transactions have been eliminated. We are operating under the basis that we will realize assets and satisfy liabilities in the normal course of business as a going concern and in accordance with the delegation of authority from FHFA to the Board of Directors and management. Certain financial statement information that is normally included in annual financial statements prepared in conformity with GAAP, but is not required for interim reporting purposes, has been condensed or omitted. Certain amounts in prior periods’ consolidated financial statements have been reclassified to conform to the current presentation. In the opinion of management, all adjustments, which include only normal recurring adjustments, have been recorded for a fair presentation of our unaudited condensed consolidated financial statements.
Use of Estimates	Use of Estimates The preparation of financial statements requires us to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses and gains and losses during the reporting period. Management has made significant estimates in preparing the financial statements for establishing the allowance for loan losses and reserve for guarantee losses, valuing financial instruments and other assets and liabilities, and assessing impairments on investments. Actual results could be different from these estimates.
Allowance for Loan Losses and Reserve for Guarantee Losses	Change in Estimate Adoption of Regulatory Guidance on Determining when a Loan is Uncollectible On January 1, 2015, we adopted regulatory guidance issued by FHFA that establishes guidelines for adverse classification and identification of specified single-family and multifamily assets and off-balance sheet credit exposures, including guidelines for recognizing charge-offs on certain single-family loans. We analyze loans for collectability based on several factors, including, but not limited to: (a) servicing actions that indicate the potential for near-term loss mitigation, such as whether we have achieved quality borrower contact; (b) credit risk factors, such as whether the loan is in a state with foreclosure practices that prevent timely resolution of delinquencies; and (c) loan characteristics that indicate whether repayment is likely to occur, such as the borrower's payment history, loan status, and historical performance of loans with similar characteristics. Upon adoption of the FHFA regulatory guidance on January 1, 2015, we changed the timing of when we deem certain single-family loans to be uncollectible, and we began to charge-off the amount of recorded investment in excess of the fair value of the underlying collateral for mortgage loans that have been deemed uncollectible prior to foreclosure, based on the factors identified above. This adoption resulted in a reduction to both the recorded investment of mortgage loans, held-for-investment, and our allowance for loan losses of $1.9 billion on January 1, 2015. However, these additional charge-offs did not have a material impact on our comprehensive income during the nine months ended September 30, 2015, as we had already measured impairment for these loans based on collateral value in prior periods.
Earnings Per Common Share	Earnings Per Common Share The August 2012 amendment to the Purchase Agreement changed the manner in which the dividend on the senior preferred stock is determined. For each quarter from January 1, 2013 through and including December 31, 2017, the dividend payment will be the amount, if any, by which our Net Worth Amount at the end of the immediately preceding fiscal quarter, less the applicable Capital Reserve Amount, exceeds zero. See "NOTE 11: STOCKHOLDERS' EQUITY — Senior Preferred Stock" for additional information regarding the Capital Reserve Amount. For each quarter beginning January 1, 2018, the dividend payment will be the amount, if any, by which our Net Worth Amount at the end of the immediately preceding fiscal quarter exceeds zero. The dividend is presented in the period in which it is determinable for the senior preferred stock as a reduction to net income (loss) available to common stockholders and net income (loss) per common share. The dividend is declared and paid in the following period and recorded as a reduction to equity in the period declared. Because we have issued participating securities, we use the “two-class” method of computing earnings per common share. Basic earnings per common share is computed as net income attributable to common stockholders divided by the weighted average common shares outstanding for the period. The weighted average common shares outstanding for the period includes the weighted average number of shares that are associated with the warrant for our common stock issued to Treasury pursuant to the Purchase Agreement. These shares are included since the warrant is unconditionally exercisable by the holder at a minimal cost. Diluted earnings per common share is computed as net income attributable to common stockholders divided by the weighted average common shares outstanding during the period adjusted for the dilutive effect of common equivalent shares outstanding. For periods with net income attributable to common stockholders, the calculation includes the effect of the weighted average shares related to stock options if the average market price during the period exceeds the exercise price. During periods in which a net loss attributable to common stockholders has been incurred, potential common equivalent shares outstanding are not included in the calculation because it would have an antidilutive effect. See “NOTE 1: SUMMARY OF SIGNIFICANT ACCOUNTING POLICIES — Earnings Per Common Share” in our 2014 Annual Report for further discussion of our significant accounting policies regarding our calculation of earnings per common share and “NOTE 11: STOCKHOLDERS’ EQUITY — Stock-Based Compensation” for additional information on our earnings-per-share calculation.
Recently Adopted or Issued Accounting Guidance	Recent Accounting Guidance The following table provides a brief description of recent accounting pronouncements that could affect our financial statements. Standard Description Date of Adoption Effect on the Financial Statements Recently Adopted Accounting Guidance ASU 2014-04, Reclassification of Residential Real Estate Collateralized Consumer Mortgage Loans upon Foreclosure (Topic 310) The amendment clarifies that a creditor is considered to have received physical possession of residential real estate property collateralizing a consumer mortgage loan, upon either the creditor obtaining legal title to the residential real estate property upon completion of a foreclosure or the borrower conveying all interest in the residential real estate property to the creditor to satisfy that loan through completion of a deed in lieu of foreclosure or through a similar legal agreement. January 1, 2015 The adoption of this amendment did not have a material effect on our consolidated financial statements. ASU 2014-11, Repurchase-to-Maturity Transactions, Repurchase Financings, and Disclosures (Topic 860) The amendment requires repurchase-to-maturity transactions to be accounted for as secured borrowings and requires separate accounting for a transfer of a financial asset completed contemporaneously with a repurchase agreement with the same counterparty. January 1, 2015 The adoption of this amendment did not have a material effect on our consolidated financial statements. ASU 2014-14, Classification of Certain Government-Guaranteed Mortgage Loans upon Foreclosure (Topic 310) The amendment requires that a mortgage loan be de-recognized and a separate receivable be recognized upon foreclosure if certain conditions are met. If those conditions are met and such a receivable is recognized, the receivable should be measured based on the amount of principal and interest related to the loan expected to be recovered from the guarantor. January 1, 2015 The adoption of this amendment did not have a material effect on our consolidated financial statements. Recently Issued Accounting Guidance, Not Yet Adopted Within our Consolidated Financial Statements ASU 2015-14, Revenue from Contracts with Customers (Topic 606) The amendment defers the effective date of ASU 2014-09 for all entities by one year. January 1, 2018 We are evaluating the effect that the adoption of this amendment will have on our consolidated financial statements. ASU 2015-03, Simplifying the Presentation of Debt Issuance Costs (Subtopic 835-30) The amendment requires that debt issuance costs related to a recognized debt liability be presented in the balance sheet as a direct deduction from the carrying amount of that debt liability, consistent with debt discounts. January 1, 2016 We do not expect that the adoption of this amendment will have a material effect on our consolidated financial statements. ASU 2015-02, Amendments to the Consolidation Analysis (Topic 810) The amendment affects reporting entities that are required to evaluate whether they should consolidate certain legal entities. January 1, 2016 We do not expect that the adoption of this amendment will have a material effect on our consolidated financial statements.

Variable Interest Entities (Tab

Variable Interest Entities (Tables)	9 Months Ended
	Sep. 30, 2015
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Table - Variable Interests in VIEs for Which We are not the Primary Beneficiary	Table 3.1 — Variable Interests in VIEs for which We are not the Primary Beneficiary September 30, 2015 Freddie Mac Securities (1) Other (in millions) Assets and Liabilities Recorded on our Consolidated Balance Sheets Assets: Restricted cash and cash equivalents $ — $ 3 Investments in securities: Available-for-sale, at fair value 35,577 — Trading, at fair value 16,324 — Accrued interest receivable 218 8 Other assets 1,117 527 Liabilities: Derivative liabilities, net — (28 ) Other liabilities (1,112 ) (565 ) Maximum Exposure to Loss (2) $ 102,527 $ 10,613 Total Assets of Non-Consolidated VIEs (3) $ 121,143 $ 23,070 December 31, 2014 Freddie Mac Securities (1) Other (in millions) Assets and Liabilities Recorded on our Consolidated Balance Sheets Assets: Restricted cash and cash equivalents $ — $ 3 Investments in securities: Available-for-sale, at fair value 39,099 — Trading, at fair value 17,469 — Accrued interest receivable 236 7 Other assets 914 495 Liabilities: Derivative liabilities, net — (30 ) Other liabilities (1,005 ) (560 ) Maximum Exposure to Loss (2) $ 87,529 $ 10,419 Total Assets of Non-Consolidated VIEs (3) $ 103,253 $ 22,855 (1) Freddie Mac securities include our variable interests in single-family multiclass REMICs and Other Structured Securities, multifamily Other Structured Securities, and Other Guarantee Transactions that we do not consolidate. Our maximum exposure to loss includes guaranteed UPB of assets held by the non-consolidated VIEs related to multifamily Other Structured Securities and Other Guarantee Transactions. Our maximum exposure to loss on Freddie Mac securities excludes investments in single-family multiclass REMICs and Other Structured Securities, because we already consolidate the collateral of these trusts on our consolidated balance sheets. (2) For Freddie Mac securities, this represents the UPB of the securities. For other VIEs, this represents either the carrying amount or amortized cost recorded on our consolidated balance sheets. (3) Represents the UPB of assets held by non-consolidated VIEs using the most current information available to us.

Mortgage Loans and Loan Loss 27

Mortgage Loans and Loan Loss Reserves (Tables)	9 Months Ended
	Sep. 30, 2015
Mortgage Loans on Real Estate [Abstract]
Table - Mortgage Loans	Table 4.1 — Mortgage Loans September 30, 2015 December 31, 2014 Unsecuritized Held By Consolidated Trusts Total Unsecuritized Held By Consolidated Trusts Total (in millions) Single-family: Fixed-rate Amortizing $ 94,573 $ 1,492,466 $ 1,587,039 $ 105,560 $ 1,431,872 $ 1,537,432 Interest-only 641 2,461 3,102 939 3,298 4,237 Total fixed-rate 95,214 1,494,927 1,590,141 106,499 1,435,170 1,541,669 Adjustable-rate Amortizing 1,070 66,755 67,825 1,353 68,632 69,985 Interest-only 2,458 17,922 20,380 3,191 20,373 23,564 Total adjustable-rate 3,528 84,677 88,205 4,544 89,005 93,549 Other Guarantee Transactions — 6,123 6,123 — 7,042 7,042 FHA/VA and other governmental 453 2,848 3,301 473 3,139 3,612 Total single-family 99,195 1,588,575 1,687,770 111,516 1,534,356 1,645,872 Multifamily: Fixed-rate 42,785 1,737 44,522 43,632 524 44,156 Adjustable-rate 11,432 — 11,432 9,321 — 9,321 Other governmental 3 — 3 3 — 3 Total multifamily 54,220 1,737 55,957 52,956 524 53,480 Total UPB of mortgage loans 153,415 1,590,312 1,743,727 164,472 1,534,880 1,699,352 Deferred fees, unamortized premiums, discounts and other cost basis adjustments (4,611 ) 28,030 23,419 (3,366 ) 26,098 22,732 Fair value adjustments on mortgage loans held-for sale (860 ) — (860 ) 257 — 257 Allowance for loan losses on mortgage loans held-for-investment (13,368 ) (3,051 ) (16,419 ) (18,877 ) (2,884 ) (21,761 ) Total mortgage loans, net $ 134,576 $ 1,615,291 $ 1,749,867 $ 142,486 $ 1,558,094 $ 1,700,580 Mortgage loans, net: Held-for-investment $ 106,723 $ 1,615,291 $ 1,722,014 $ 130,118 $ 1,558,094 $ 1,688,212 Held-for-sale 27,853 — 27,853 12,368 — 12,368 Total mortgage loans, net $ 134,576 $ 1,615,291 $ 1,749,867 $ 142,486 $ 1,558,094 $ 1,700,580
Table - Recorded Investment of Held-For-Invstment Mortgage Loans, by LTV Ratio and Credit Classification	Table 4.2 — Recorded Investment of Single-Family Mortgage Loans, by LTV Ratio As of September 30, 2015 As of December 31, 2014 Estimated Current LTV Ratio (1) Estimated Current LTV Ratio (1) ≤ 80 > 80 to 100 > 100 (2) Total ≤ 80 > 80 to 100 > 100 (2) Total (in millions) Single-family mortgage loans: 20 and 30-year or more, amortizing fixed-rate (3) $ 988,352 $ 251,940 $ 60,174 $ 1,300,466 $ 911,071 $ 258,126 $ 85,398 $ 1,254,595 15-year amortizing fixed-rate (3) 270,533 13,427 2,161 286,121 265,098 14,101 3,338 282,537 Adjustable-rate 60,044 5,559 347 65,950 60,463 6,701 709 67,873 Alt-A, interest-only, and option ARM 27,696 14,597 10,376 52,669 28,935 18,232 16,448 63,615 Total single-family mortgage loans $ 1,346,625 $ 285,523 $ 73,058 $ 1,705,206 $ 1,265,567 $ 297,160 $ 105,893 $ 1,668,620 (1) The current LTV ratios are management estimates, which are updated on a monthly basis. Current market values are estimated by adjusting the value of the property at origination based on changes in the market value of homes in the same geographic area since that time. Changes in market value are derived from our internal index which measures price changes for repeat sales and refinancing activity on the same properties using Freddie Mac and Fannie Mae single-family mortgage loan acquisitions, including foreclosure sales. Estimates of the current LTV ratio include the credit-enhanced portion of the mortgage loan and exclude any secondary financing by third parties. (2) The serious delinquency rate for the total of single-family held-for-investment mortgage loans with estimated current LTV ratios in excess of 100% was 6.39% and 9.01% as of September 30, 2015 and December 31, 2014, respectively. (3) The majority of our mortgage loan modifications result in new terms that include fixed interest rates after modification. As of September 30, 2015 and December 31, 2014, we have categorized UPB of approximately $39.5 billion and $42.3 billion , respectively, of modified mortgage loans as fixed-rate mortgage loans (instead of as adjustable rate mortgage loans), even though the modified mortgage loans have rate adjustment provisions. In these cases, while the terms of the modified mortgage loans provide for the interest rate to adjust in the future, such future rates are determined at the time of modification rather than at a subsequent date. Table 4.3 — Recorded Investment of Multifamily Mortgage Loans, by Credit Classification September 30, 2015 December 31, 2014 (in millions) Credit risk profile by internally assigned grade: (1) Pass $ 31,341 $ 38,518 Special mention 1,291 1,805 Substandard 595 1,030 Doubtful — — Total $ 33,227 $ 41,353 (1) A mortgage loan categorized as: "Pass" is current and adequately protected by the current financial strength and debt service capacity of the borrower; "Special mention" has signs of potential financial weakness; "Substandard" has a well-defined financial weakness that jeopardizes the timely full repayment; and "Doubtful" has a weakness that makes collection or liquidation in full highly questionable and improbable based on existing conditions.
Table - Detail of Loan Loss Reserves	Table 4.4 — Detail of Loan Loss Reserves Three Months Ended September 30, 2015 2014 Allowance for Loan Losses Reserve for Allowance for Loan Losses Reserve for Unsecuritized Held By Consolidated Trusts Total Unsecuritized Held By Consolidated Trusts Total (dollars in millions) Single-family: Beginning balance $ 14,535 $ 2,738 $ 67 $ 17,340 $ 19,956 $ 2,652 $ 100 $ 22,708 Provision (benefit) for credit losses (652 ) 122 2 (528 ) 211 378 (5 ) 584 Charge-offs (605 ) (73 ) (2 ) (680 ) (1,014 ) (72 ) (2 ) (1,088 ) Recoveries 174 3 — 177 184 6 — 190 Transfers, net (1) (128 ) 260 (1 ) 131 55 137 — 192 Ending balance $ 13,324 $ 3,050 $ 66 $ 16,440 $ 19,392 $ 3,101 $ 93 $ 22,586 Multifamily: Beginning balance $ 54 $ — $ 14 $ 68 $ 91 $ — $ 16 $ 107 Provision (benefit) for credit losses (6 ) — 6 — (11 ) — 1 (10 ) Charge-offs (3 ) — — (3 ) — — — — Recoveries — — — — 1 — — 1 Transfers, net (1) (1 ) 1 — — — — — — Ending balance $ 44 $ 1 $ 20 $ 65 $ 81 $ — $ 17 $ 98 Total: Beginning balance $ 14,589 $ 2,738 $ 81 $ 17,408 $ 20,047 $ 2,652 $ 116 $ 22,815 Provision (benefit) for credit losses (658 ) 122 8 (528 ) 200 378 (4 ) 574 Charge-offs (608 ) (73 ) (2 ) (683 ) (1,014 ) (72 ) (2 ) (1,088 ) Recoveries 174 3 — 177 185 6 — 191 Transfers, net (1) (129 ) 261 (1 ) 131 55 137 — 192 Ending balance $ 13,368 $ 3,051 $ 86 $ 16,505 $ 19,473 $ 3,101 $ 110 $ 22,684 Ratio of total loan loss reserves (excluding reserves for TDR concessions) to annualized net charge-offs for single-family mortgage loans 2.9 3.1 Ratio of total loan loss reserves to annualized net charge-offs for single-family mortgage loans 8.2 6.3 Nine Months Ended September 30, 2015 2014 Allowance for Loan Losses Reserve for Allowance for Loan Losses Reserve for Unsecuritized Held By Consolidated Trusts Total Unsecuritized Held By Consolidated Trusts Total (in millions) Single-family: Beginning balance $ 18,800 $ 2,884 $ 109 $ 21,793 $ 21,487 $ 3,006 $ 85 $ 24,578 Provision (benefit) for credit losses (2,050 ) 222 (36 ) (1,864 ) (665 ) 745 13 93 Charge-offs (4,179 ) (298 ) (6 ) (4,483 ) (3,464 ) (298 ) (5 ) (3,767 ) Recoveries 535 12 — 547 848 252 — 1,100 Transfers, net (1) 218 230 (1 ) 447 1,186 (604 ) — 582 Ending balance $ 13,324 $ 3,050 $ 66 $ 16,440 $ 19,392 $ 3,101 $ 93 $ 22,586 Multifamily: Beginning balance $ 77 $ — $ 17 $ 94 $ 125 $ — $ 26 $ 151 Provision (benefit) for credit losses (23 ) — 3 (20 ) (43 ) — (9 ) (52 ) Charge-offs (9 ) — — (9 ) (2 ) — — (2 ) Recoveries — — — — 1 — — 1 Transfers, net (1) (1 ) 1 — — — — — — Ending balance $ 44 $ 1 $ 20 $ 65 $ 81 $ — $ 17 $ 98 Total: Beginning balance $ 18,877 $ 2,884 $ 126 $ 21,887 $ 21,612 $ 3,006 $ 111 $ 24,729 Provision (benefit) for credit losses (2,073 ) 222 (33 ) (1,884 ) (708 ) 745 4 41 Charge-offs (4,188 ) (298 ) (6 ) (4,492 ) (3,466 ) (298 ) (5 ) (3,769 ) Recoveries 535 12 — 547 849 252 — 1,101 Transfers, net (1) 217 231 (1 ) 447 1,186 (604 ) — 582 Ending balance $ 13,368 $ 3,051 $ 86 $ 16,505 $ 19,473 $ 3,101 $ 110 $ 22,684 (1) Includes approximately $0.1 billion and $0.2 billion during the three months ended September 30, 2015 and the three months ended September 30, 2014, respectively; and $0.4 billion and $0.6 billion during the nine months ended September 30, 2015 and the nine months ended September 30, 2014, respectively, attributable to capitalization of past due interest on modified mortgage loans. Also includes amounts associated with reclassified single-family reserves related to our removal of mortgage loans previously held by consolidated trusts, net of reclassifications for single-family mortgage loans subsequently resecuritized after such removal.
Table - Net Investment in Mortgage Loans	Table 4.5 — Net Investment in Mortgage Loans September 30, 2015 December 31, 2014 Single-family Multifamily Total Single-family Multifamily Total (in millions) Recorded investment: Collectively evaluated $ 1,612,481 $ 32,659 $ 1,645,140 $ 1,568,237 $ 40,451 $ 1,608,688 Individually evaluated 92,725 568 93,293 100,383 902 101,285 Total recorded investment 1,705,206 33,227 1,738,433 1,668,620 41,353 1,709,973 Ending balance of the allowance for loan losses: Collectively evaluated (1,527 ) (21 ) (1,548 ) (3,847 ) (25 ) (3,872 ) Individually evaluated (14,847 ) (24 ) (14,871 ) (17,837 ) (52 ) (17,889 ) Total ending balance of the allowance (16,374 ) (45 ) (16,419 ) (21,684 ) (77 ) (21,761 ) Net investment in mortgage loans $ 1,688,832 $ 33,182 $ 1,722,014 $ 1,646,936 $ 41,276 $ 1,688,212
Table - Recourse and other forms of credit protection	Table 4.6 — Recourse and Other Forms of Credit Protection (1) UPB at Maximum Coverage (2) at September 30, 2015 December 31, 2014 September 30, 2015 December 31, 2014 (in millions) Single-family: Primary mortgage insurance $ 249,182 $ 227,495 $ 63,693 $ 57,938 Other credit protection: STACR debt note and ACIS transactions (3) 214,902 144,272 11,906 6,657 Lender recourse and indemnifications 6,267 6,527 5,505 6,092 Pool insurance (4) 1,821 2,284 790 947 HFA indemnification 2,715 3,357 2,715 3,324 Subordination (5) 2,477 2,377 315 339 Other credit enhancements 19 20 15 18 Total $ 477,383 $ 386,332 $ 84,939 $ 75,315 Multifamily: K Certificates $ 90,704 $ 75,541 $ 16,488 $ 13,576 Subordination (5) 5,252 4,724 887 796 HFA indemnification 711 772 699 699 Other credit enhancements 6,269 5,706 2,298 1,685 Total $ 102,936 $ 86,743 $ 20,372 $ 16,756 (1) Except for the majority of our single-family credit risk transfer transactions, our credit enhancements generally provide protection for the first, or initial, credit losses associated with the related mortgage loans. Excludes: (a) FHA/VA and other governmental mortgage loans; (b) purchased credit protection associated with $8.7 billion and $9.8 billion in UPB of single-family mortgage loans underlying Other Guarantee Transactions as of September 30, 2015 and December 31, 2014, respectively; and (c) repurchase rights (subject to certain conditions and limitations) we have under representations and warranties provided by our agreements with seller/servicers to underwrite mortgage loans and service them in accordance with our standards. (2) Except for subordination and K Certificates, this represents the remaining amount of loss recovery that is available subject to terms of counterparty agreements. For subordination and K Certificates coverage, this represents the UPB of the securities that are subordinate to our guarantee, which provide protection by absorbing first losses. (3) Excludes $72.6 billion and $48.3 billion in UPB at September 30, 2015 and December 31, 2014, respectively, where the related mortgage loans are also covered by primary mortgage insurance. Maximum coverage amounts presented represent the outstanding balance of STACR debt notes held by third parties as well as the remaining aggregate limit of insurance purchased from third parties in ACIS transactions. (4) Excludes approximately $0.7 billion and $0.9 billion in UPB at September 30, 2015 and December 31, 2014, respectively, where the related mortgage loans are also covered by primary mortgage insurance. (5) Represents Freddie Mac issued mortgage-related securities with subordination protection, excluding multifamily K Certificates and those securities backed by state and local HFA bonds related to the HFA initiative.

Impaired Mortgage Loans (Tables

Impaired Mortgage Loans (Tables)	9 Months Ended
	Sep. 30, 2015
Loan and Lease Receivables, Impaired [Abstract]
Table - Individually Impaired Mortgage Loans	Table 5.1 — Individually Impaired Mortgage Loans Balance at September 30, 2015 For the Three Months Ended September 30, 2015 For the Nine Months Ended September 30, 2015 UPB Recorded Investment Associated Allowance Net Investment Average Recorded Investment Interest Income Recognized Interest Income Recognized On Cash Basis (1) Average Recorded Investment Interest Income Recognized Interest Income Recognized On Cash Basis (1) (in millions) Single-family — With no specific allowance recorded: (2) 20 and 30-year or more, amortizing fixed-rate $ 4,583 $ 3,390 N/A $ 3,390 $ 3,415 $ 100 $ 2 $ 3,265 $ 288 $ 9 15-year amortizing fixed-rate 45 37 N/A 37 38 2 — 42 6 — Adjustable-rate 137 133 N/A 133 135 1 — 84 2 — Alt-A, interest-only, and option ARM 1,158 840 N/A 840 844 20 — 781 59 2 Total with no specific allowance recorded 5,923 4,400 N/A 4,400 4,432 123 2 4,172 355 11 With specific allowance recorded: (3) 20 and 30-year or more, amortizing fixed-rate 74,152 72,351 $ (11,882 ) 60,469 72,585 627 67 74,209 1,898 242 15-year amortizing fixed-rate 1,001 1,004 (22 ) 982 989 11 2 1,056 35 8 Adjustable-rate 591 585 (32 ) 553 579 4 1 676 14 3 Alt-A, interest-only, and option ARM 14,959 14,385 (2,911 ) 11,474 14,509 100 11 15,201 305 44 Total with specific allowance recorded 90,703 88,325 (14,847 ) 73,478 88,662 742 81 91,142 2,252 297 Combined single-family: 20 and 30-year or more, amortizing fixed-rate 78,735 75,741 (11,882 ) 63,859 76,000 727 69 77,474 2,186 251 15-year amortizing fixed-rate 1,046 1,041 (22 ) 1,019 1,027 13 2 1,098 41 8 Adjustable-rate 728 718 (32 ) 686 714 5 1 760 16 3 Alt-A, interest-only, and option ARM 16,117 15,225 (2,911 ) 12,314 15,353 120 11 15,982 364 46 Total single-family $ 96,626 $ 92,725 $ (14,847 ) $ 77,878 $ 93,094 $ 865 $ 83 $ 95,314 $ 2,607 $ 308 Multifamily — With no specific allowance recorded (4) $ 399 $ 391 N/A $ 391 $ 423 $ 6 $ 3 $ 635 $ 20 $ 7 With specific allowance recorded 182 177 $ (24 ) 153 197 2 1 261 7 5 Total multifamily $ 581 $ 568 $ (24 ) $ 544 $ 620 $ 8 $ 4 $ 896 $ 27 $ 12 Total single-family and multifamily $ 97,207 $ 93,293 $ (14,871 ) $ 78,422 $ 93,714 $ 873 $ 87 $ 96,210 $ 2,634 $ 320 Balance at December 31, 2014 For the Three Months Ended September 30, 2014 For the Nine Months Ended September 30, 2014 UPB Recorded Investment Associated Allowance Net Investment Average Recorded Investment Interest Income Recognized Interest Income Recognized On Cash Basis (1) Average Recorded Investment Interest Income Recognized Interest Income Recognized On Cash Basis (1) (in millions) Single-family — With no specific allowance recorded: (2) 20 and 30-year or more, amortizing fixed-rate $ 6,041 $ 4,007 N/A $ 4,007 $ 3,941 $ 105 $ 12 $ 3,618 $ 277 $ 27 15-year amortizing fixed-rate 63 44 N/A 44 45 3 — 37 7 1 Adjustable rate 27 22 N/A 22 22 — — 15 1 — Alt-A, interest-only, and option ARM 1,717 1,168 N/A 1,168 1,151 22 2 1,119 60 4 Total with no specific allowance recorded 7,848 5,241 N/A 5,241 5,159 130 14 4,789 345 32 With specific allowance recorded: (3) 20 and 30-year or more, amortizing fixed-rate 77,798 76,708 $ (14,051 ) 62,657 76,001 588 82 75,562 1,760 213 15-year amortizing fixed-rate 1,226 1,233 (40 ) 1,193 1,225 13 3 1,255 41 7 Adjustable rate 868 866 (65 ) 801 857 5 2 891 17 4 Alt-A, interest-only, and option ARM 16,734 16,335 (3,681 ) 12,654 16,410 95 19 16,531 286 46 Total with specific allowance recorded 96,626 95,142 (17,837 ) 77,305 94,493 701 106 94,239 2,104 270 Combined single-family: 20 and 30-year or more, amortizing fixed-rate 83,839 80,715 (14,051 ) 66,664 79,942 693 94 79,180 2,037 240 15-year amortizing fixed-rate 1,289 1,277 (40 ) 1,237 1,270 16 3 1,292 48 8 Adjustable rate 895 888 (65 ) 823 879 5 2 906 18 4 Alt-A, interest-only, and option ARM 18,451 17,503 (3,681 ) 13,822 17,561 117 21 17,650 346 50 Total single-family $ 104,474 $ 100,383 $ (17,837 ) $ 82,546 $ 99,652 $ 831 $ 120 $ 99,028 $ 2,449 $ 302 Multifamily — With no specific allowance recorded (4) $ 440 $ 431 N/A $ 431 $ 526 $ 8 $ 2 $ 656 $ 24 $ 7 With specific allowance recorded 480 471 $ (52 ) 419 474 6 4 521 19 13 Total multifamily $ 920 $ 902 $ (52 ) $ 850 $ 1,000 $ 14 $ 6 $ 1,177 $ 43 $ 20 Total single-family and multifamily $ 105,394 $ 101,285 $ (17,889 ) $ 83,396 $ 100,652 $ 845 $ 126 $ 100,205 $ 2,492 $ 322 (1) Consists of income recognized during the period related to mortgage loans on non-accrual status. (2) Individually impaired single-family mortgage loans with no specific allowance primarily represent mortgage loans removed from PC pools and accounted for in accordance with the accounting guidance for loans and debt securities acquired with deteriorated credit quality that have not experienced further deterioration. (3) Consists primarily of mortgage loans classified as TDRs. (4) Individually impaired multifamily mortgage loans with no specific allowance primarily represent those mortgage loans for which the collateral value is sufficiently in excess of the mortgage loan balance to result in recovery of the entire recorded investment if the property were foreclosed upon or otherwise subject to disposition.
Table - Payment Status of Mortgage Loans	Table 5.2 — Payment Status of Mortgage Loans September 30, 2015 Current One Month Past Due Two Months Past Due Three Months or More Past Due, or in Foreclosure (1) Total Non-accrual (in millions) Single-family: 20 and 30-year or more, amortizing fixed-rate $ 1,265,447 $ 16,770 $ 5,151 $ 13,098 $ 1,300,466 $ 13,095 15-year amortizing fixed-rate 284,626 965 185 345 286,121 345 Adjustable-rate 65,206 393 94 257 65,950 257 Alt-A, interest-only, and option ARM 47,027 2,098 777 2,767 52,669 2,765 Total single-family 1,662,306 20,226 6,207 16,467 1,705,206 16,462 Total multifamily 33,227 — — — 33,227 242 Total single-family and multifamily $ 1,695,533 $ 20,226 $ 6,207 $ 16,467 $ 1,738,433 $ 16,704 December 31, 2014 Current One Month Past Due Two Months Past Due Three Months or More Past Due, or in Foreclosure (1) Total Non-accrual (in millions) Single-family: 20 and 30-year or more, amortizing fixed-rate $ 1,207,826 $ 17,516 $ 5,817 $ 23,436 $ 1,254,595 $ 23,433 15-year amortizing fixed-rate 280,629 1,010 216 682 282,537 682 Adjustable-rate 66,737 406 118 612 67,873 612 Alt-A, interest-only, and option ARM 53,251 2,368 948 7,048 63,615 7,045 Total single-family 1,608,443 21,300 7,099 31,778 1,668,620 31,772 Total multifamily 41,335 7 11 — 41,353 385 Total single-family and multifamily $ 1,649,778 $ 21,307 $ 7,110 $ 31,778 $ 1,709,973 $ 32,157 (1) Includes $7.5 billion and $17.9 billion of mortgage loans that were in the process of foreclosure as of September 30, 2015 and December 31, 2014 , respectively.
Table - Delinquency Rates	Table 5.3 — Delinquency Rates September 30, 2015 December 31, 2014 Single-family: (1) Non-credit-enhanced portfolio Serious delinquency rate 1.36 % 1.74 % Total number of seriously delinquent mortgage loans 111,964 150,300 Credit-enhanced portfolio: (2) Primary mortgage insurance: Serious delinquency rate 2.26 % 3.10 % Total number of seriously delinquent mortgage loans 29,805 38,595 Other credit protection: (3) Serious delinquency rate 0.67 % 1.21 % Total number of seriously delinquent mortgage loans 9,762 12,175 Total single-family: Serious delinquency rate 1.41 % 1.88 % Total number of seriously delinquent mortgage loans 150,564 200,069 Multifamily: (4) Non-credit-enhanced portfolio: Delinquency rate — % 0.02 % UPB of delinquent mortgage loans (in millions) $ — $ 11 Credit-enhanced portfolio: Delinquency rate 0.02 % 0.05 % UPB of delinquent mortgage loans (in millions) $ 21 $ 44 Total Multifamily: Delinquency rate 0.01 % 0.04 % UPB of delinquent mortgage loans (in millions) $ 21 $ 55 (1) Serious delinquencies on single-family mortgage loans underlying certain REMICs and Other Structured Securities, Other Guarantee Transactions, and other guarantee commitments may be reported on a different schedule due to variances in industry practice. (2) The credit enhanced categories are not mutually exclusive as a single mortgage loan may be covered by both primary mortgage insurance and other credit protection. (3) Consists of single-family mortgage loans covered by financial arrangements (other than primary mortgage insurance) that are designed to reduce our credit risk exposure. See " Table 4.6 — Recourse and Other Forms of Credit Protection " for more information. (4) Multifamily delinquency performance is based on UPB of mortgage loans that are two monthly payments or more past due or those in the process of foreclosure and includes multifamily Other Guarantee Transactions (e.g., K Certificates).
Table - TDR Activity, by Segment	Table 5.4 — TDR Activity, by Segment Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Number of Mortgage Loans Post-TDR Recorded Investment Number of Mortgage Loans Post-TDR Recorded Investment Number of Mortgage Loans Post-TDR Recorded Investment Number of Mortgage Loans Post-TDR Recorded Investment (dollars in millions) Single-family: (1) 20 and 30-year or more, amortizing fixed-rate 10,899 $ 1,530 17,194 $ 2,518 35,922 $ 5,121 52,356 $ 7,863 15-year amortizing fixed-rate 1,428 102 1,931 139 4,483 327 5,278 394 Adjustable-rate 293 42 397 61 1,026 150 1,336 207 Alt-A, interest-only, and option ARM 941 167 2,070 418 3,455 642 7,206 1,472 Total Single-family 13,561 1,841 21,592 3,136 44,886 6,240 66,176 9,936 Multifamily — — — — 1 30 1 10 Total 13,561 $ 1,841 21,592 $ 3,136 44,887 $ 6,270 66,177 $ 9,946 (1) The pre-TDR recorded investment for single-family mortgage loans initially classified as TDR during the three and nine months ended September 30, 2015 was $1.8 billion and $6.2 billion , respectively, compared to $3.1 billion and $9.9 billion during the three and nine months ended September 30, 2014 , respectively.
Table - Payment Defaults of Completed TDR Modifications, by Segment	Table 5.5 — Payment Defaults of Completed TDR Modifications, by Segment (1) Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 Number of Mortgage Loans Post-TDR Recorded Investment (2) Number of Mortgage Loans Post-TDR Recorded Investment (2) Number of Mortgage Loans Post-TDR Recorded Investment (2) Number of Mortgage Loans Post-TDR Recorded Investment (2) (dollars in millions) Single-family: 20 and 30-year or more, amortizing fixed-rate 4,919 $ 787 5,190 $ 922 13,692 $ 2,278 13,814 $ 2,483 15-year amortizing fixed-rate 227 17 170 16 664 54 461 45 Adjustable-rate 93 15 88 15 243 41 250 46 Alt-A, interest-only, and option ARM 506 109 604 138 1,464 337 1,778 428 Total single-family 5,745 $ 928 6,052 $ 1,091 16,063 $ 2,710 16,303 $ 3,002 Multifamily — $ — — $ — — $ — — $ — (1) Represents TDR mortgage loans that experienced a payment default during the period and had completed a modification during the year preceding the payment default. (2) Represents the recorded investment at the end of the period in which the mortgage loan was modified and does not represent the recorded investment as of September 30.

Real Estate Owned (Tables)

Real Estate Owned (Tables)	9 Months Ended
	Sep. 30, 2015
Repossessed Assets [Abstract]
Table - REO	Table 6.1 — REO Three Months Ended Nine Months Ended 2015 2014 2015 2014 (in millions) Beginning balance — REO $ 2,034 $ 3,696 $ 2,684 $ 4,602 Additions 524 815 1,769 3,293 Dispositions (696 ) (1,475 ) (2,591 ) (4,859 ) Ending balance — REO 1,862 3,036 1,862 3,036 Beginning balance, valuation allowance (56 ) (19 ) (126 ) (51 ) Change in valuation allowance (11 ) (106 ) 59 (74 ) Ending balance, valuation allowance (67 ) (125 ) (67 ) (125 ) Ending balance — REO, net $ 1,795 $ 2,911 $ 1,795 $ 2,911

Investments in Securities (Tabl

Investments in Securities (Tables)	9 Months Ended
	Sep. 30, 2015
Investments, Debt and Equity Securities [Abstract]
Table - Available-For-Sale Securities	Table 7.1 — Available-For-Sale Securities Gross Unrealized Losses September 30, 2015 Amortized Cost Gross Unrealized Gains Other-Than-Temporary Impairment (1) Temporary Impairment (2) Fair Value (in millions) Available-for-sale securities: Freddie Mac $ 34,130 $ 1,480 $ — $ (33 ) $ 35,577 Fannie Mae 7,544 313 — (21 ) 7,836 Ginnie Mae 159 14 — — 173 CMBS 13,907 669 — — 14,576 Subprime 13,501 702 (321 ) (73 ) 13,809 Option ARM 3,630 326 (68 ) (6 ) 3,882 Alt-A and other 3,158 513 (20 ) (5 ) 3,646 Obligations of states and political subdivisions 1,458 23 — (1 ) 1,480 Manufactured housing 504 91 (1 ) — 594 Total available-for-sale securities $ 77,991 $ 4,131 $ (410 ) $ (139 ) $ 81,573 December 31, 2014 Available-for-sale securities: Freddie Mac $ 37,710 $ 1,435 $ — $ (46 ) $ 39,099 Fannie Mae 10,860 463 — (10 ) 11,313 Ginnie Mae 183 16 — — 199 CMBS 20,988 890 (2 ) (54 ) 21,822 Subprime 20,210 989 (518 ) (92 ) 20,589 Option ARM 5,460 372 (179 ) (4 ) 5,649 Alt-A and other 4,500 578 (29 ) (6 ) 5,043 Obligations of states and political subdivisions 2,166 34 — (2 ) 2,198 Manufactured housing 556 84 (2 ) — 638 Total available-for-sale securities $ 102,633 $ 4,861 $ (730 ) $ (214 ) $ 106,550 (1) Represents the gross unrealized losses for securities for which we have previously recognized other-than-temporary impairments in earnings. (2) Represents the gross unrealized losses for securities for which we have not previously recognized other-than-temporary impairments in earnings.
Table - Available-For-Sale Securities in a Gross Unrealized Loss Position	Table 7.2 — Available-For-Sale Securities in a Gross Unrealized Loss Position Less than 12 Months 12 Months or Greater September 30, 2015 Fair Value Gross Unrealized Losses Fair Value Gross Unrealized Losses (in millions) Available-for-sale securities: Freddie Mac $ 2,547 $ (8 ) $ 1,188 $ (25 ) Fannie Mae 3,183 (19 ) 335 (2 ) Ginnie Mae — — 58 — CMBS 175 — 152 — Subprime 1,767 (18 ) 4,607 (376 ) Option ARM 348 (7 ) 691 (67 ) Alt-A and other 128 (1 ) 379 (24 ) Obligations of states and political subdivisions 9 — 12 (1 ) Manufactured housing — — 14 (1 ) Total available-for-sale securities in a gross unrealized loss position $ 8,157 $ (53 ) $ 7,436 $ (496 ) December 31, 2014 Available-for-sale securities: Freddie Mac $ 2,531 $ (14 ) $ 936 $ (32 ) Fannie Mae 2,693 (9 ) 5 (1 ) Ginnie Mae 66 — — — CMBS 184 (5 ) 1,149 (51 ) Subprime 286 (3 ) 6,533 (607 ) Option ARM 77 — 1,490 (183 ) Alt-A and other 185 (5 ) 499 (30 ) Obligations of states and political subdivisions 48 — 28 (2 ) Manufactured housing 42 — 15 (2 ) Total available-for-sale securities in a gross unrealized loss position $ 6,112 $ (36 ) $ 10,655 $ (908 )
Table - Significant Modeled Attributes for Certain Available-For-Sale Non-Agency Mortgage-Related Securities	Table 7.3 — Significant Modeled Attributes for Certain Available-For-Sale Non-Agency Mortgage-Related Securities September 30, 2015 Subprime Option ARM Alt-A (dollars in millions) UPB $ 18,539 $ 5,604 $ 3,066 Weighted average collateral defaults (1) 44 % 28 % 23 % Weighted average collateral severities (2) 65 % 62 % 48 % Weighted average voluntary prepayment rates (3) 3 % 9 % 10 % Average credit enhancements (4) 7 % (1 )% 1 % (1) The expected cumulative default rate is expressed as a percentage of the current collateral UPB. (2) The expected average loss given default is calculated as the ratio of cumulative loss over cumulative default for each security. (3) The security’s voluntary prepayment rate represents the average of the monthly voluntary prepayment rate weighted by the security’s outstanding UPB. (4) Positive values reflect the amount of subordination and other financial support (excluding credit enhancement provided by bond insurance) that will incur losses in the securitization structure before any losses are allocated to securities that we own. Percentage generally calculated based on the total UPB of securities subordinate to the securities we own divided by the total UPB of all of the securities issued by the trust (excluding notional balances). Negative values are shown when unallocated collateral losses will be allocated to the securities that we own in excess of current remaining credit enhancement, if any. The unallocated collateral losses have been considered in our assessment of other-than-temporary impairment.
Table - Net Impairment of Available-For-Sale Securities Recognized in Earnings	Table 7.4 — Net Impairment of Available-For-Sale Securities Recognized in Earnings Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Available-for-sale securities: (1) CMBS $ — $ — $ (29 ) $ — Subprime (34 ) (125 ) (123 ) (582 ) Option ARM (19 ) (39 ) (88 ) (72 ) Alt-A and other (1 ) (2 ) (5 ) (33 ) Total net impairment of available-for-sale securities recognized in earnings $ (54 ) $ (166 ) $ (245 ) $ (687 ) (1) Includes $38 million and $203 million of other-than-temporary impairments recognized in earnings during the three and nine months ended September 30, 2015, respectively, compared to $132 million and $598 million during the three and nine months ended September 30, 2014, respectively, as we had the intent to sell the related securities before recovery of their amortized cost basis.
Table - Other-Than-Temporary Impairments Related to Credit Losses on Available-For-Sale Securities	Table 7.5 — Other-Than-Temporary Impairments Related to Credit Losses on Available-For-Sale Securities Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Beginning balance — remaining credit losses on available-for-sale securities where other-than-temporary impairments were recognized in earnings $ 5,679 $ 11,118 $ 6,798 $ 14,463 Additions: Amounts related to credit losses for which an other-than-temporary impairment was previously recognized 16 34 42 89 Reductions: Amounts related to securities which were sold, written off, or matured (21 ) (807 ) (108 ) (1,141 ) Amounts for which we intend to sell the security or it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis (60 ) (1,949 ) (951 ) (4,736 ) Amounts related to amortization resulting from significant increases in cash flows expected to be collected and/or due to the passage of time that are recognized over the remaining life of the security (79 ) (110 ) (246 ) (389 ) Ending balance — remaining credit losses on available-for-sale securities where other-than-temporary impairments were recognized in earnings (1) $ 5,535 $ 8,286 $ 5,535 $ 8,286 (1) Excludes other-than-temporary impairments on securities that we intend to sell or it is more likely than not that we will be required to sell before recovery of the unrealized losses.
Table - Gross Realized Gains and Gross Realized Losses on Sales of Available-For-Sale Securities	Table 7.6 — Gross Realized Gains and Gross Realized Losses on Sales of Available-For-Sale Securities Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Gross realized gains $ 324 $ 273 $ 1,177 $ 1,394 Gross realized losses (12 ) (166 ) (23 ) (182 ) Net realized gains (losses) $ 312 $ 107 $ 1,154 $ 1,212
Table - Contractual Maturities of Available-For-Sale Securities	Table 7.7 — Contractual Maturities of Available-For-Sale Securities As of September 30, 2015 After One Year Through Five Years After Five Years Through Ten Years Total Amortized Cost Total Fair Value One Year or Less After Ten Years Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value Amortized Cost Fair Value (in millions) Available-for-sale securities: Freddie Mac $ 34,130 $ 35,577 $ — $ — $ 79 $ 79 $ 730 $ 731 $ 33,321 $ 34,767 Fannie Mae 7,544 7,836 3 3 19 20 80 90 7,442 7,723 Ginnie Mae 159 173 — — 2 2 20 24 137 147 CMBS 13,907 14,576 — — 315 325 8 8 13,584 14,243 Subprime 13,501 13,809 — — — — — — 13,501 13,809 Option ARM 3,630 3,882 — — — — — — 3,630 3,882 Alt-A and other 3,158 3,646 1 1 16 16 7 8 3,134 3,621 Obligations of states and political subdivisions 1,458 1,480 — — 34 36 65 68 1,359 1,376 Manufactured housing 504 594 — — 1 — 7 10 496 584 Total available-for-sale securities $ 77,991 $ 81,573 $ 4 $ 4 $ 466 $ 478 $ 917 $ 939 $ 76,604 $ 80,152
Table - Trading Securities	Table 7.8 — Trading Securities September 30, 2015 December 31, 2014 (in millions) Mortgage-related securities: Freddie Mac $ 16,324 $ 17,469 Fannie Mae 6,887 6,099 Ginnie Mae 290 16 Other 147 171 Total mortgage-related securities 23,648 23,755 U.S. Treasury securities 12,158 6,682 Total fair value of trading securities $ 35,806 $ 30,437

Debt Securities and Subordina31

Debt Securities and Subordinated Borrowings (Tables)	9 Months Ended
	Sep. 30, 2015
Debt Disclosure [Abstract]
Table - Other Debt	Table 8.1 — Other Debt September 30, 2015 December 31, 2014 Par Value Carrying Amount (1) Weighted Average Effective Rate (2) Par Value Carrying Amount (1) Weighted Average Effective Rate (2) (dollars in millions) Other short-term debt: Reference Bills ® securities and other discount notes $ 104,484 $ 104,435 0.18 % $ 134,670 $ 134,619 0.12 % Medium-term notes 7,845 7,845 0.17 — — — Total other short-term debt $ 112,329 $ 112,280 0.18 $ 134,670 $ 134,619 0.12 Other long-term debt: Original maturities on or before December 31, 2015 $ 13,026 $ 13,025 1.73 % $ 58,841 $ 58,830 1.62 % 2016 59,500 59,599 2.11 72,504 72,696 1.88 2017 83,610 83,756 1.58 77,482 77,489 1.78 2018 46,224 46,250 1.53 30,850 30,823 1.67 2019 28,615 28,540 1.88 30,671 30,570 1.97 Thereafter 68,501 64,831 3.11 49,011 45,042 3.42 Total other long-term debt (3) 299,476 296,001 2.05 319,359 315,450 2.02 Total other debt $ 411,805 $ 408,281 $ 454,029 $ 450,069 (1) Represents par value, net of associated discounts or premiums, and hedge-related basis adjustments. Includes $7.4 billion and $5.8 billion at September 30, 2015 and December 31, 2014, respectively, of other long-term debt that represents the fair value of debt securities with the fair value option elected. (2) Represents the weighted average effective rate that remains constant over the life of the instrument, which includes the amortization of discounts or premiums, issuance costs, and hedge-related basis adjustments. (3) Balance, net for other long-term debt includes callable debt of $101.1 billion and $106.3 billion at September 30, 2015 and December 31, 2014, respectively, which gives us the option to call or not call debt for a variety of reasons that include managing the composition of liabilities or economic reasons.
Table - Debt Securities of Consolidated Trusts Held by Third Parties	Table 8.2 — Debt Securities of Consolidated Trusts Held by Third Parties September 30, 2015 December 31, 2014 Contractual Maturity UPB Carrying Amount Weighted Average Coupon (1) Contractual Maturity UPB Carrying Amount Weighted Average Coupon (1) (dollars in millions) (dollars in millions) Single-family: 30-year or more, fixed-rate (2) 2015 - 2053 $ 1,071,730 $ 1,103,502 3.91 % 2015 - 2053 $ 1,018,357 $ 1,047,302 4.04 % 20-year fixed-rate 2015 - 2035 73,369 75,611 3.63 2015 - 2035 71,545 73,764 3.74 15-year fixed-rate 2015 - 2030 271,722 278,285 3.03 2015 - 2030 266,117 272,538 3.13 Adjustable-rate 2015 - 2047 62,327 63,735 2.60 2015 - 2047 65,082 66,518 2.62 Interest-only 2026 - 2041 14,967 15,028 3.16 2026 - 2041 17,474 17,524 3.29 FHA/VA 2016 - 2044 1,040 1,060 5.39 2015 - 2044 1,226 1,250 5.42 Total single-family 1,495,155 1,537,221 1,439,801 1,478,896 Multifamily (2) 2017 - 2028 1,737 1,887 4.78 2017 - 2019 524 577 4.93 Total debt securities of consolidated trusts held by third parties $ 1,496,892 $ 1,539,108 $ 1,440,325 $ 1,479,473 (1) The effective rate for debt securities of consolidated trusts held by third parties was 3.01% and 3.19% as of September 30, 2015 and December 31, 2014, respectively. (2) Carrying amount includes securities recorded at fair value.

Derivatives (Tables)

Derivatives (Tables)	9 Months Ended
	Sep. 30, 2015
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Table - Derivative Assets and Liabilities at Fair Value	Table 9.1 — Derivative Assets and Liabilities at Fair Value September 30, 2015 December 31, 2014 Notional or Contractual Amount Derivatives at Fair Value Notional or Contractual Amount Derivatives at Fair Value Assets Liabilities Assets Liabilities (in millions) Total derivative portfolio Interest-rate swaps: Receive-fixed $ 210,020 $ 5,605 $ (21 ) $ 205,219 $ 5,243 $ (487 ) Pay-fixed 213,522 22 (14,829 ) 213,325 408 (12,829 ) Basis (floating to floating) 300 2 — 300 2 — Total interest-rate swaps 423,842 5,629 (14,850 ) 418,844 5,653 (13,316 ) Option-based: Call swaptions Purchased 50,375 3,693 — 56,390 3,315 — Written 3,875 — (130 ) 10,660 — (90 ) Put Swaptions Purchased 17,800 335 — 22,125 179 — Written 8,775 — (13 ) 3,560 — (9 ) Other option-based derivatives (1) 12,610 813 — 19,733 730 (28 ) Total option-based 93,435 4,841 (143 ) 112,468 4,224 (127 ) Futures 65,000 — — 40,263 — — Commitments 53,625 103 (178 ) 27,054 40 (79 ) Credit derivatives 4,714 19 (10 ) 5,207 27 (11 ) Swap guarantee derivatives 3,081 — (25 ) 3,204 — (27 ) Total derivatives not designated as hedging instruments 643,697 10,592 (15,206 ) 607,040 9,944 (13,560 ) Derivative interest receivable (payable) 822 (1,429 ) 817 (1,500 ) Netting adjustments (2) (10,809 ) 14,965 (9,939 ) 13,097 Total derivative portfolio, net $ 643,697 $ 605 $ (1,670 ) $ 607,040 $ 822 $ (1,963 ) (1) Primarily includes purchased interest-rate caps and floors and options on Treasury futures. (2) Represents counterparty netting and cash collateral netting. Net cash collateral posted was $4.2 billion and $3.2 billion at September 30, 2015 and December 31, 2014, respectively.
Table - Gains and Losses on Derivatives	Table 9.2 — Gains and Losses on Derivatives Derivative Gains (Losses) Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Interest-rate swaps: Receive-fixed $ 1,845 $ (751 ) $ 1,563 $ 2,300 Pay-fixed (6,538 ) 568 (4,076 ) (5,804 ) Basis (floating to floating) — (1 ) (1 ) (1 ) Total interest-rate swaps (4,693 ) (184 ) (2,514 ) (3,505 ) Option based: Call swaptions Purchased 1,293 99 795 1,172 Written (49 ) 7 (40 ) (145 ) Put swaptions Purchased (259 ) (41 ) (194 ) (817 ) Written 47 — 70 — Other option-based derivatives (1) 139 13 91 134 Total option-based 1,171 78 722 344 Futures (2 ) (3 ) (13 ) (43 ) Commitments (114 ) 100 40 296 Credit derivatives 2 19 (36 ) (9 ) Swap guarantee derivatives 1 1 5 6 Other (1 ) (1 ) (5 ) (9 ) Subtotal (3,636 ) 10 (1,801 ) (2,920 ) Accrual of periodic settlements: Receive-fixed interest-rate swaps 647 726 1,948 2,343 Pay-fixed interest-rate swaps (1,183 ) (1,354 ) (3,588 ) (4,319 ) Other — 1 1 2 Total accrual of periodic settlements (536 ) (627 ) (1,639 ) (1,974 ) Total $ (4,172 ) $ (617 ) $ (3,440 ) $ (4,894 ) (1) Primarily includes purchased interest-rate caps and floors and options on Treasury futures.

Collateral and Offsetting of 33

Collateral and Offsetting of Assets and Liabilities (Tables)	9 Months Ended
	Sep. 30, 2015
Offsetting [Abstract]
Table - Offsetting of Financial Assets and Liabilities	Table 10.1 — Offsetting of Financial Assets and Liabilities September 30, 2015 Gross Amount Recognized Amount Offset in the Consolidated Balance Sheets Net Amount Presented in the Consolidated Balance Sheets (1) Gross Amount Not Offset in the Consolidated Balance Sheets (2) Net Amount (in millions) Assets: Derivatives: Over-the-counter interest-rate swaps and option-based derivatives $ 9,390 $ (9,061 ) $ 329 $ (288 ) $ 41 Cleared and exchange-traded derivatives 1,902 (1,748 ) 154 — 154 Other 122 — 122 — 122 Total derivatives 11,414 (10,809 ) 605 (288 ) 317 Securities purchased under agreements to resell 38,738 — 38,738 (38,738 ) — Total $ 50,152 $ (10,809 ) $ 39,343 $ (39,026 ) $ 317 Liabilities: Derivatives: Over-the-counter interest-rate swaps and option-based derivatives $ (10,254 ) $ 8,798 $ (1,456 ) $ 1,411 $ (45 ) Cleared and exchange-traded derivatives (6,168 ) 6,167 (1 ) — (1 ) Other (213 ) — (213 ) — (213 ) Total $ (16,635 ) $ 14,965 $ (1,670 ) $ 1,411 $ (259 ) December 31, 2014 Gross Amount Recognized Amount Offset in the Consolidated Balance Sheets Net Amount Presented in the Consolidated Balance Sheets (1) Gross Amount Not Offset in the Consolidated Balance Sheets (2) Net Amount (in millions) Assets: Derivatives: Over-the-counter interest-rate and option-based derivatives $ 10,315 $ (9,688 ) $ 627 $ (453 ) $ 174 Cleared and exchange-traded derivatives 379 (251 ) 128 — 128 Other 67 — 67 — 67 Total derivatives 10,761 (9,939 ) 822 (453 ) 369 Securities purchased under agreements to resell 51,903 — 51,903 (51,903 ) — Total $ 62,664 $ (9,939 ) $ 52,725 $ (52,356 ) $ 369 Liabilities: Derivatives: Over-the-counter interest-rate and option-based derivatives $ (10,666 ) $ 8,845 $ (1,821 ) $ 1,743 $ (78 ) Cleared and exchange-traded derivatives (4,277 ) 4,252 (25 ) — (25 ) Other (117 ) — (117 ) — (117 ) Total $ (15,060 ) $ 13,097 $ (1,963 ) $ 1,743 $ (220 ) (1) For derivatives, includes cash collateral posted or held in excess of exposure. (2) Does not include the fair value amount of non-cash collateral posted or held that exceeds the associated net asset or liability presented on the consolidated balance sheets. For cleared and exchange-traded derivatives, does not include non-cash collateral posted by us with an aggregate fair value of $2.8 billion and $2.3 billion as of September 30, 2015 and December 31, 2014, respectively.
Table - Collateral in the Form of Securities Pledged	Table 10.2 — Collateral in the Form of Securities Pledged September 30, 2015 December 31, 2014 (in millions) Securities pledged with the ability for the secured party to repledge: Debt securities of consolidated trusts held by third parties (1) $ 1,832 $ 2,539 Available-for-sale securities — 9 Trading securities 2,455 1,884 Total securities pledged $ 4,287 $ 4,432 (1) Represents PCs held by us in our Investments segment mortgage investments portfolio and pledged as collateral which are recorded as a reduction to debt securities of consolidated trusts held by third parties on our consolidated balance sheets.

Stockholders' Equity (Tables)

Stockholders' Equity (Tables)	9 Months Ended
	Sep. 30, 2015
Stockholders' Equity Note [Abstract]
Table - Changes in AOCI by Component, Net of Tax	Table 11.1 — Changes in AOCI by Component, Net of Tax Nine Months Ended September 30, 2015 AOCI Related to Available- For-Sale Securities AOCI Related to Cash Flow Hedge Relationships AOCI Related to Defined Benefit Plans Total (in millions) Beginning balance $ 2,546 $ (803 ) $ (13 ) $ 1,730 Other comprehensive income before reclassifications (1) 373 — 27 400 Amounts reclassified from accumulated other comprehensive income (591 ) 132 (1 ) (460 ) Changes in AOCI by component (218 ) 132 26 (60 ) Ending balance $ 2,328 $ (671 ) $ 13 $ 1,670 Nine Months Ended September 30, 2014 AOCI Related to Available- For-Sale Securities AOCI Related to Cash Flow Hedge Relationships AOCI Related to Defined Benefit Plans Total (in millions) Beginning balance $ 962 $ (1,000 ) $ 32 $ (6 ) Other comprehensive income before reclassifications (1) 1,903 — 1 1,904 Amounts reclassified from accumulated other comprehensive income (341 ) 151 (2 ) (192 ) Changes in AOCI by component 1,562 151 (1 ) 1,712 Ending balance $ 2,524 $ (849 ) $ 31 $ 1,706 (1) For the nine months ended September 30, 2015 and the nine months ended September 30, 2014, net of tax expense of $0.2 billion and $1.0 billion , respectively, for AOCI related to available-for-sale securities.
Table - Reclassifications from AOCI to Net Income	Table 11.2 — Reclassifications from AOCI to Net Income Details about Accumulated Other Comprehensive Income Components Three Months Ended September 30, Nine Months Ended September 30, Affected Line Item in the Consolidated Statements of Comprehensive Income 2015 2014 2015 2014 (in millions) AOCI related to available-for-sale securities $ 312 $ 107 $ 1,154 $ 1,212 Other gains (losses) on investment securities recognized in earnings (54 ) (166 ) (245 ) (687 ) Net impairment of available-for-sale securities recognized in earnings 258 (59 ) 909 525 Total before tax (89 ) 21 (318 ) (184 ) Tax (expense) or benefit 169 (38 ) 591 341 Net of tax AOCI related to cash flow hedge relationships — (1 ) (1 ) (2 ) Interest expense — Other debt (53 ) (75 ) (176 ) (230 ) Expense related to derivatives (53 ) (76 ) (177 ) (232 ) Total before tax 18 26 45 81 Tax (expense) or benefit (35 ) (50 ) (132 ) (151 ) Net of tax AOCI related to defined benefit plans 1 1 1 3 Salaries and employee benefits — — — (1 ) Tax (expense) or benefit 1 1 1 2 Net of tax Total reclassifications in the period $ 135 $ (87 ) $ 460 $ 192 Net of tax

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2015
Segment Reporting [Abstract]
Table - Summary of Segment Earnings and Comprehensive Income (Loss)	Table 13.1 — Summary of Segment Earnings (Loss) and Comprehensive Income (Loss) Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Segment Earnings (loss), net of taxes: Single-family Guarantee $ 591 $ 196 $ 1,140 $ 1,077 Investments (963 ) 1,440 2,424 5,060 Multifamily (103 ) 445 654 1,339 All Other — — — (13 ) Total Segment Earnings (loss), net of taxes (475 ) 2,081 4,218 7,463 Net income (loss) $ (475 ) $ 2,081 $ 4,218 $ 7,463 Comprehensive income (loss) of segments: Single-family Guarantee $ 591 $ 195 $ 1,139 $ 1,076 Investments (1,008 ) 2,259 2,446 6,953 Multifamily (84 ) 332 546 1,159 All Other — — 27 (13 ) Comprehensive income (loss) of segments (501 ) 2,786 4,158 9,175 Comprehensive income (loss) $ (501 ) $ 2,786 $ 4,158 $ 9,175
Table - Segment Earnings and Reconciliation to GAAP Results	Table 13.2 — Segment Earnings (Loss) and Reconciliation to GAAP Results Three Months Ended September 30, 2015 Total Segment Earnings (Loss), Net of Tax Reconciliation to Consolidated Statements of Comprehensive Income Total per Consolidated Statements of Comprehensive Income Single-family Guarantee Investments Multifamily All Other Reclassifications Segment Adjustments Total Reconciling Items (in millions) Net interest income $ 52 $ 394 $ 148 $ — $ 594 $ 2,944 $ 205 $ 3,149 $ 3,743 Benefit for credit losses 360 — — — 360 168 — 168 528 Non-interest income (loss): Management and guarantee income (1) 1,345 — 87 — 1,432 (1,280 ) (62 ) (1,342 ) 90 Net impairment of available-for-sale securities recognized in earnings — 108 4 — 112 (166 ) — (166 ) (54 ) Derivative gains (losses) 2 (2,950 ) (502 ) — (3,450 ) (722 ) — (722 ) (4,172 ) Gains (losses) on trading securities — (103 ) 47 — (56 ) — — — (56 ) Gains (losses) on mortgage loans (319 ) — 122 — (197 ) — — — (197 ) Other non-interest income (loss) 175 1,028 41 — 1,244 (696 ) — (696 ) 548 Non-interest expense: Administrative expenses (309 ) (76 ) (80 ) — (465 ) — — — (465 ) REO operations expense (116 ) — — — (116 ) — — — (116 ) Other non-interest expense (257 ) — (13 ) — (270 ) (248 ) — (248 ) (518 ) Segment adjustments (62 ) 205 — — 143 — (143 ) (143 ) — Income tax (expense) benefit (280 ) 431 43 — 194 — — — 194 Net income (loss) 591 (963 ) (103 ) — (475 ) — — — (475 ) Changes in unrealized gains (losses) related to available-for-sale securities — (80 ) 19 — (61 ) — — — (61 ) Changes in unrealized gains (losses) related to cash flow hedge relationships — 35 — — 35 — — — 35 Changes in defined benefit plans — — — — — — — — — Total other comprehensive income (loss), net of taxes — (45 ) 19 — (26 ) — — — (26 ) Comprehensive income (loss) $ 591 $ (1,008 ) $ (84 ) $ — $ (501 ) $ — $ — $ — $ (501 ) Nine Months Ended September 30, 2015 Total Segment Earnings (Loss), Net of Tax Reconciliation to Consolidated Statements of Comprehensive Income Total per Consolidated Statements of Comprehensive Income Single-family Guarantee Investments Multifamily All Other Reclassifications Segment Adjustments Total Reconciling Items (in millions) Net interest income $ (59 ) $ 1,479 $ 671 $ — $ 2,091 $ 8,666 $ 602 $ 9,268 $ 11,359 Benefit for credit losses 1,335 — 20 — 1,355 529 — 529 1,884 Non-interest income (loss): Management and guarantee income (1) 4,066 — 239 — 4,305 (3,834 ) (202 ) (4,036 ) 269 Net impairment of available-for-sale securities recognized in earnings — 322 (22 ) — 300 (545 ) — (545 ) (245 ) Derivative gains (losses) (36 ) (1,221 ) 7 — (1,250 ) (2,190 ) — (2,190 ) (3,440 ) Gains (losses) on trading securities — (329 ) — — (329 ) — — — (329 ) Gains (losses) on mortgage loans (1,537 ) — 216 — (1,321 ) — — — (1,321 ) Other non-interest income 485 2,949 106 — 3,540 (1,921 ) — (1,921 ) 1,619 Non-interest expense: Administrative expense (938 ) (239 ) (240 ) — (1,417 ) — — — (1,417 ) REO operations expense (243 ) — — — (243 ) — — — (243 ) Other non-interest expense (1,196 ) (2 ) (36 ) — (1,234 ) (705 ) — (705 ) (1,939 ) Segment adjustments (202 ) 602 — — 400 — (400 ) (400 ) — Income tax expense (535 ) (1,137 ) (307 ) — (1,979 ) — — — (1,979 ) Net income 1,140 2,424 654 — 4,218 — — — 4,218 Changes in unrealized gains (losses) related to available-for-sale securities — (110 ) (108 ) — (218 ) — — — (218 ) Changes in unrealized gains (losses) related to cash flow hedge relationships — 132 — — 132 — — — 132 Changes in defined benefit plans (1 ) — — 27 26 — — — 26 Total other comprehensive income (loss), net of taxes (1 ) 22 (108 ) 27 (60 ) — — — (60 ) Comprehensive income $ 1,139 $ 2,446 $ 546 $ 27 $ 4,158 $ — $ — $ — $ 4,158 Three Months Ended September 30, 2014 Total Segment Earnings (Loss), Net of Tax Reconciliation to Consolidated Statements of Comprehensive Income Total per Consolidated Statements of Comprehensive Income Single-family Guarantee Investments Multifamily All Other Reclassifications Segment Adjustments Total Reconciling Items (in millions) Net interest income $ 19 $ 762 $ 240 $ — $ 1,021 $ 2,474 $ 168 $ 2,642 $ 3,663 (Provision) benefit for credit losses (818 ) — 10 — (808 ) 234 — 234 (574 ) Non-interest income (loss): Management and guarantee income (1) 1,143 — 65 — 1,208 (1,049 ) (75 ) (1,124 ) 84 Net impairment of available-for-sale securities recognized in earnings — 37 — — 37 (203 ) — (203 ) (166 ) Derivative gains (losses) 19 (133 ) 310 — 196 (813 ) — (813 ) (617 ) Gains (losses) on trading securities — (202 ) (14 ) — (216 ) — — — (216 ) Gains (losses) on mortgage loans 52 — 116 — 168 — — — 168 Other non-interest income 351 1,594 11 — 1,956 (445 ) — (445 ) 1,511 Non-interest expense: Administrative expenses (302 ) (104 ) (66 ) — (472 ) — — — (472 ) REO operations income (expense) (109 ) — 6 — (103 ) — — — (103 ) Other non-interest expense (40 ) — (3 ) — (43 ) (198 ) — (198 ) (241 ) Segment adjustments (75 ) 168 — — 93 — (93 ) (93 ) — Income tax expense (44 ) (682 ) (230 ) — (956 ) — — — (956 ) Net income 196 1,440 445 — 2,081 — — — 2,081 Changes in unrealized gains (losses) related to available-for-sale securities — 769 (113 ) — 656 — — — 656 Changes in unrealized gains (losses) related to cash flow hedge relationships — 50 — — 50 — — — 50 Changes in defined benefit plans (1 ) — — — (1 ) — — — (1 ) Total other comprehensive income (loss), net of taxes (1 ) 819 (113 ) — 705 — — — 705 Comprehensive income $ 195 $ 2,259 $ 332 $ — $ 2,786 $ — $ — $ — $ 2,786 Nine Months Ended September 30, 2014 Total Segment Earnings (Loss), Net of Tax Reconciliation to Consolidated Statements of Comprehensive Income Total per Consolidated Statements of Comprehensive Income Single-family Guarantee Investments Multifamily All Other Reclassifications Segment Adjustments Total Reconciling Items (in millions) Net interest income $ (27 ) $ 2,324 $ 705 $ — $ 3,002 $ 7,206 $ 468 $ 7,674 $ 10,676 (Provision) benefit for credit losses (742 ) — 52 — (690 ) 649 — 649 (41 ) Non-interest income (loss): Management and guarantee income (1) 3,201 — 186 — 3,387 (2,910 ) (233 ) (3,143 ) 244 Net impairment of available-for-sale securities recognized in earnings — (95 ) — — (95 ) (592 ) — (592 ) (687 ) Derivative gains (losses) (9 ) (2,745 ) 507 — (2,247 ) (2,647 ) — (2,647 ) (4,894 ) Gains (losses) on trading securities — (243 ) 60 — (183 ) — — — (183 ) Gains (losses) on mortgage loans (143 ) — 526 — 383 — — — 383 Other non-interest income 602 8,004 143 — 8,749 (1,143 ) — (1,143 ) 7,606 Non-interest expense: Administrative expense (855 ) (339 ) (199 ) — (1,393 ) — — — (1,393 ) REO operations income (expense) (120 ) — 8 — (112 ) — — — (112 ) Other non-interest expense (159 ) (6 ) (16 ) (18 ) (199 ) (563 ) — (563 ) (762 ) Segment adjustments (233 ) 468 — — 235 — (235 ) (235 ) — Income tax (expense) benefit (438 ) (2,308 ) (633 ) 5 (3,374 ) — — — (3,374 ) Net income (loss) 1,077 5,060 1,339 (13 ) 7,463 — — — 7,463 Changes in unrealized gains (losses) related to available-for-sale securities — 1,742 (180 ) — 1,562 — — — 1,562 Changes in unrealized gains (losses) related to cash flow hedge relationships — 151 — — 151 — — — 151 Changes in defined benefit plans (1 ) — — — (1 ) — — — (1 ) Total other comprehensive income (loss), net of taxes (1 ) 1,893 (180 ) — 1,712 — — — 1,712 Comprehensive income $ 1,076 $ 6,953 $ 1,159 $ (13 ) $ 9,175 $ — $ — $ — $ 9,175 (1) Management and guarantee income is included in other income on our GAAP consolidated statements of comprehensive income.

Financial Guarantees (Tables)

Financial Guarantees (Tables)	9 Months Ended
	Sep. 30, 2015
Guarantees [Abstract]
Table - Financial Guarantees	Table 14.1 — Financial Guarantees September 30, 2015 December 31, 2014 Maximum Exposure (1) Recognized Liability (2) Maximum Remaining Term Maximum Exposure (1) Recognized Liability (2) Maximum Remaining Term (dollars in millions, terms in years) Non-consolidated Freddie Mac securities $ 102,527 $ 1,013 40 $ 87,529 $ 861 39 Other guarantee commitments 12,551 576 39 26,147 772 39 Derivative instruments 15,609 168 30 21,336 154 31 (1) The maximum exposure represents the contractual amounts that could be lost if counterparties or borrowers defaulted, without consideration of possible recoveries under credit enhancement arrangements, such as recourse provisions, third-party insurance contracts, or from collateral held or pledged. The maximum exposure disclosed above is not representative of the actual loss we are likely to incur, based on our historical loss experience and after consideration of proceeds from related collateral liquidation. The maximum exposure for our liquidity guarantees is not mutually exclusive of our default guarantees on the same securities; therefore, these amounts are included within the maximum exposure of non-consolidated Freddie Mac securities and other guarantee commitments. (2) For non-consolidated Freddie Mac securities and other guarantee commitments, this amount represents the guarantee obligation on our consolidated balance sheets. This amount excludes our reserve for guarantee losses, which totaled $86 million and $126 million as of September 30, 2015 and December 31, 2014 , respectively, and is included within other liabilities on our consolidated balance sheets.

Concentration of Credit and O37

Concentration of Credit and Other Risks (Tables)	9 Months Ended
	Sep. 30, 2015
Risks and Uncertainties [Abstract]
Table - Concentration of Credit Risk	Table 15.1 — Concentration of Credit Risk — Single-Family Credit Guarantee Portfolio September 30, 2015 December 31, 2014 Percent of Credit Losses Nine Months Ended Percentage of Portfolio (1) Serious Delinquency Rate Percentage of Portfolio (1) Serious Delinquency Rate September 30, 2015 September 30, 2014 Year of Origination 2015 12 % — % N/A N/A — % N/A 2014 11 0.07 12 % 0.02 % — — % 2013 14 0.10 16 0.06 — — 2012 13 0.09 14 0.09 — — 2011 5 0.26 6 0.26 — — 2010 5 0.46 6 0.46 1 — 2009 5 0.87 6 0.92 2 2 Subtotal - New single-family book 65 0.20 60 0.24 3 2 HARP and other relief refinance mortgage loans (1) 18 0.70 20 0.75 7 7 2005 to 2008 Legacy single-family book 11 6.26 13 7.59 80 83 Pre-2005 Legacy single-family book 6 2.64 7 3.10 10 8 Total 100 % 1.41 % 100 % 1.88 % 100 % 100 % Region (2) West 29 % 0.86 % 29 % 1.23 % 13 % 13 % Northeast 26 2.20 26 2.81 43 26 North Central 17 1.18 17 1.48 16 21 Southeast 16 1.69 16 2.40 25 36 Southwest 12 0.91 12 1.16 3 4 Total 100 % 1.41 % 100 % 1.88 % 100 % 100 % State Arizona, California, Florida, and Nevada (3) 26 % 1.25 % 26 % 1.91 % 27 % 37 % Illinois, Michigan, and Ohio (4) 10 1.36 10 1.70 13 17 New York and New Jersey (5) 9 3.63 9 4.62 28 10 All other 55 1.18 55 1.53 32 36 Total 100 % 1.41 % 100 % 1.88 % 100 % 100 % (1) HARP and other relief refinance mortgage loans are presented separately rather than in the year that the refinancing occurred (from 2009 to 2015). All other refinance mortgage loans are presented in the year that the refinancing occurred. (2) Region designation: West (AK, AZ, CA, GU, HI, ID, MT, NV, OR, UT, WA); Northeast (CT, DE, DC, MA, ME, MD, NH, NJ, NY, PA, RI, VT, VA, WV); North Central (IL, IN, IA, MI, MN, ND, OH, SD, WI); Southeast (AL, FL, GA, KY, MS, NC, PR, SC, TN, VI); Southwest (AR, CO, KS, LA, MO, NE, NM, OK, TX, WY). (3) Represents the four states that had the largest cumulative declines in home prices during the housing crisis that began in 2006, as measured using Freddie Mac’s home price index. (4) Represents selected states in the North Central region that have experienced adverse economic conditions since 2006. (5) Represents two states with a judicial foreclosure process in which there are a significant number of seriously delinquent mortgage loans within our single-family credit guarantee portfolio. Table 15.3 — Concentration of Credit Risk — Multifamily Mortgage Portfolio September 30, 2015 December 31, 2014 UPB Delinquency Rate (1) UPB Delinquency Rate (1) (dollars in billions) Legal Structure Unsecuritized mortgage loans: Unsecuritized mortgage loans held-for-investment $ 31.5 — % $ 40.9 0.03 % Unsecuritized mortgage loans held-for-sale 22.7 — 12.1 — K Certificates 92.4 0.02 76.0 0.01 Other Freddie-Mac mortgage-related securities 5.6 — 5.0 0.64 Other guarantee commitments 9.6 — 9.3 — Total $ 161.8 0.01 $ 143.3 0.04 (1) Based on mortgage loans two monthly payments or more delinquent or in foreclosure.
Certain Higher Risk Categories In The Single Family Credit Guarantee Portfolio [Table Text Block]	Table 15.2 — Certain Higher-Risk Categories in the Single-Family Credit Guarantee Portfolio (1) Percentage of Portfolio Serious Delinquency Rate September 30, 2015 December 31, 2014 September 30, 2015 December 31, 2014 Interest-only 1 % 2 % 7.11 % 9.36 % Option ARM (2) — — 8.46 9.87 Alt-A 3 3 7.01 8.53 Original LTV ratio greater than 90% (3) 16 16 2.07 2.58 Lower credit scores at origination (less than 620) 3 3 6.89 8.57 (1) Excludes mortgage loans underlying certain Other Guarantee Transactions for which data was not available. (2) For reporting purposes, mortgage loans within the option ARM category continue to be reported in that category following modification, even though the modified mortgage loan no longer provides for optional payment provisions. (3) Includes HARP mortgage loans, which we are required to purchase as part of our participation in the MHA Program.

Fair Value Disclosures (Tables)

Fair Value Disclosures (Tables)	9 Months Ended
	Sep. 30, 2015
Fair Value Disclosures [Abstract]
Table - Assets and Liabilities on Our Consolidated Balance Sheets Measured at Fair Value on a Recurring Basis	Table 16.1 — Assets and Liabilities on Our Consolidated Balance Sheets Measured at Fair Value on a Recurring Basis September 30, 2015 Level 1 Level 2 Level 3 Netting Adjustment (1) Total (in millions) Assets: Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ — $ 32,573 $ 3,004 $ — $ 35,577 Fannie Mae — 7,779 57 — 7,836 Ginnie Mae — 171 2 — 173 CMBS — 10,938 3,638 — 14,576 Subprime — — 13,809 — 13,809 Option ARM — — 3,882 — 3,882 Alt-A and other — 14 3,632 — 3,646 Obligations of states and political subdivisions — — 1,480 — 1,480 Manufactured housing — — 594 — 594 Total available-for-sale securities, at fair value — 51,475 30,098 — 81,573 Trading, at fair value: Mortgage-related securities: Freddie Mac — 15,881 443 — 16,324 Fannie Mae — 6,845 42 — 6,887 Ginnie Mae — 290 — — 290 Other — 145 2 — 147 Total mortgage-related securities — 23,161 487 — 23,648 U.S. Treasury securities 12,158 — — — 12,158 Total trading securities, at fair value 12,158 23,161 487 — 35,806 Total investments in securities 12,158 74,636 30,585 — 117,379 Mortgage loans: Held-for-sale, at fair value — 20,880 — — 20,880 Derivative assets, net: Interest-rate swaps — 5,629 — — 5,629 Option-based derivatives — 4,841 — — 4,841 Other — 103 19 — 122 Subtotal, before netting adjustments — 10,573 19 — 10,592 Netting adjustments (1) — — — (9,987 ) (9,987 ) Total derivative assets, net — 10,573 19 (9,987 ) 605 Other assets: Guarantee asset — — 1,604 — 1,604 Total assets carried at fair value on a recurring basis $ 12,158 $ 106,089 $ 32,208 $ (9,987 ) $ 140,468 Liabilities: Debt securities of consolidated trusts held by third parties, at fair value $ — $ 131 $ — $ — $ 131 Other debt, at fair value — 7,379 — — 7,379 Derivative liabilities, net: Interest-rate swaps — 14,843 7 — 14,850 Option-based derivatives — 143 — — 143 Other — 178 35 — 213 Subtotal, before netting adjustments — 15,164 42 — 15,206 Netting adjustments (1) — — — (13,536 ) (13,536 ) Total derivative liabilities, net — 15,164 42 (13,536 ) 1,670 Other liabilities: All other, at fair value — — 7 — 7 Total liabilities carried at fair value on a recurring basis $ — $ 22,674 $ 49 $ (13,536 ) $ 9,187 Fair Value at December 31, 2014 Level 1 Level 2 Level 3 Netting Adjustment (1) Total (in millions) Assets: Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ — $ 34,868 $ 4,231 $ — $ 39,099 Fannie Mae — 11,228 85 — 11,313 Ginnie Mae — 195 4 — 199 CMBS — 18,348 3,474 — 21,822 Subprime — — 20,589 — 20,589 Option ARM — — 5,649 — 5,649 Alt-A and other — 16 5,027 — 5,043 Obligations of states and political subdivisions — — 2,198 — 2,198 Manufactured housing — — 638 — 638 Total available-for-sale securities, at fair value — 64,655 41,895 — 106,550 Trading, at fair value: Mortgage-related securities: Freddie Mac — 16,542 927 — 17,469 Fannie Mae — 5,867 232 — 6,099 Ginnie Mae — 15 1 — 16 Other — 167 4 — 171 Total mortgage-related securities — 22,591 1,164 — 23,755 U.S. Treasury securities 6,682 — — — 6,682 Total trading securities, at fair value 6,682 22,591 1,164 — 30,437 Total investments in securities 6,682 87,246 43,059 — 136,987 Mortgage loans: Held-for-sale, at fair value — 12,130 — — 12,130 Derivative assets, net: Interest-rate swaps — 5,653 — — 5,653 Option-based derivatives 5 4,219 — — 4,224 Other — 40 27 — 67 Subtotal, before netting adjustments 5 9,912 27 — 9,944 Netting adjustments (1) — — — (9,122 ) (9,122 ) Total derivative assets, net 5 9,912 27 (9,122 ) 822 Other assets: Guarantee asset, at fair value — — 1,626 — 1,626 All other, at fair value — — 5 — 5 Total other assets — — 1,631 — 1,631 Total assets carried at fair value on a recurring basis $ 6,687 $ 109,288 $ 44,717 $ (9,122 ) $ 151,570 Liabilities: Debt securities of consolidated trusts held by third parties, at fair value $ — $ 42 $ — $ — $ 42 Other debt, at fair value — 5,820 — — 5,820 Derivative liabilities, net: Interest-rate swaps — 13,316 — — 13,316 Option-based derivatives 28 99 — — 127 Other — 80 37 — 117 Subtotal, before netting adjustments 28 13,495 37 — 13,560 Netting adjustments (1) — — — (11,597 ) (11,597 ) Total derivative liabilities, net 28 13,495 37 (11,597 ) 1,963 Total liabilities carried at fair value on a recurring basis $ 28 $ 19,357 $ 37 $ (11,597 ) $ 7,825 (1) Represents counterparty netting, cash collateral netting and net derivative interest receivable or payable. The net cash collateral posted was $4.2 billion and $3.2 billion , respectively, at September 30, 2015 and December 31, 2014. The net interest receivable (payable) of derivative assets and derivative liabilities was $(0.6) billion and $(0.7) billion at September 30, 2015 and December 31, 2014, respectively, which was mainly related to interest-rate swaps.
Table - Assets and Liabilities on Our Consolidated Balance Sheets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs	Table 16.2 — Assets and Liabilities on Our Consolidated Balance Sheets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs Three Months Ended September 30, 2015 Realized and unrealized gains (losses) Balance, June 30, 2015 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 (2) Transfers out of Level 3 (2) Balance, September 30, 2015 Unrealized gains (losses) still held (in millions) Assets Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ 3,143 $ 3 $ 37 $ 40 $ 186 $ 34 $ (155 ) $ (88 ) $ — $ (156 ) $ 3,004 $ (1 ) Fannie Mae 104 — — — — — — (7 ) — (40 ) 57 — Ginnie Mae 2 — — — — — — — — — 2 — CMBS 3,534 4 108 112 — — — (8 ) — — 3,638 4 Subprime 15,802 177 (176 ) 1 — — (1,392 ) (602 ) — — 13,809 37 Option ARM 4,833 66 4 70 — — (832 ) (189 ) — — 3,882 30 Alt-A and other 4,222 84 (82 ) 2 — — (346 ) (232 ) — (14 ) 3,632 35 Obligations of states and political subdivisions 1,627 — 1 1 — — — (148 ) — — 1,480 — Manufactured housing 614 — (3 ) (3 ) — — — (17 ) — — 594 — Total available-for-sale mortgage-related securities 33,881 334 (111 ) 223 186 34 (2,725 ) (1,291 ) — (210 ) 30,098 105 Trading, at fair value: Mortgage-related securities: Freddie Mac 345 (29 ) — (29 ) 212 — — (2 ) 28 (111 ) 443 (29 ) Fannie Mae 171 (6 ) — (6 ) — — (1 ) — — (122 ) 42 (6 ) Ginnie Mae — — — — — — — — — — — — Other 3 — — — — — — (1 ) — — 2 — Total trading mortgage-related securities 519 (35 ) — (35 ) 212 — (1 ) (3 ) 28 (233 ) 487 (35 ) Other assets: Guarantee asset (3) 1,652 (6 ) — (6 ) — 131 — (173 ) — — 1,604 (6 ) All other, at fair value 7 (7 ) — (7 ) — — — — — — — — Total other assets 1,659 (13 ) — (13 ) — 131 — (173 ) — — 1,604 (6 ) Realized and unrealized (gains) losses Balance, June 30, 2015 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 (2) Transfers out of Level 3 (2) Balance, September 30, 2015 Unrealized (gains) losses still held (in millions) Liabilities Net derivatives (4) $ 22 $ (12 ) $ — $ (12 ) $ — $ — $ — $ 13 $ — $ — $ 23 $ 1 Other Liabilities: All other, at fair value — 7 — 7 — — — — — — 7 14 Nine Months Ended September 30, 2015 Realized and unrealized gains (losses) Balance, January 1, 2015 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 (2) Transfers out of Level 3 (2) Balance, September 30, 2015 Unrealized gains (losses) still held (in millions) Assets Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ 4,231 $ 29 $ 19 $ 48 $ 800 $ 34 $ (527 ) $ 214 $ — $ (1,796 ) $ 3,004 $ (1 ) Fannie Mae 85 — (1 ) (1 ) — — — (18 ) 1 (10 ) 57 — Ginnie Mae 4 — — — — — — (2 ) — — 2 — CMBS 3,474 (21 ) 209 188 — — (2 ) (22 ) — — 3,638 (21 ) Subprime 20,589 704 (71 ) 633 — — (5,532 ) (1,881 ) — — 13,809 109 Option ARM 5,649 186 63 249 — — (1,522 ) (494 ) — — 3,882 105 Alt-A and other 5,027 221 (55 ) 166 — — (919 ) (642 ) — — 3,632 — Obligations of states and political subdivisions 2,198 — (11 ) (11 ) — — — (707 ) — — 1,480 (1 ) Manufactured housing 638 (1 ) 8 7 — — (1 ) (50 ) — — 594 80 Total available-for-sale mortgage-related securities 41,895 1,118 161 1,279 800 34 (8,503 ) (3,602 ) 1 (1,806 ) 30,098 271 Trading, at fair value: Mortgage-related securities: Freddie Mac 927 (40 ) — (40 ) 212 — (10 ) (6 ) 26 (666 ) 443 (40 ) Fannie Mae 232 4 — 4 — — (95 ) — — (99 ) 42 (8 ) Ginnie Mae 1 — — — — — (1 ) — — — — — Other 4 3 — 3 — — (3 ) (2 ) — — 2 — Total trading mortgage-related securities 1,164 (33 ) — (33 ) 212 — (109 ) (8 ) 26 (765 ) 487 (48 ) Other assets: Guarantee asset (3) 1,626 (30 ) — (30 ) — 457 — (449 ) — — 1,604 (30 ) All other, at fair value 5 (5 ) — (5 ) — — — — — — — — Total other assets 1,631 (35 ) — (35 ) — 457 — (449 ) — — 1,604 (30 ) Realized and unrealized (gains) losses Balance, Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 (2) Transfers out of Level 3 (2) Balance, September 30, 2015 Unrealized (gains) losses still held (in millions) Liabilities Net derivatives (4) $ 10 $ 5 $ — $ 5 $ — $ — $ — $ 8 $ — $ — $ 23 $ 13 Other Liabilities: All other, at fair value — 7 — 7 — — — — — — 7 12 Three months ended September 30, 2014 Realized and unrealized gains (losses) Balance, June 30, 2014 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 Transfers out of Level 3 Balance, September 30, 2014 Unrealized gains (losses) still held (in millions) Assets Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ 2,892 $ 3 $ 1 $ 4 $ 4,364 $ — $ (2,077 ) $ (34 ) $ — $ (843 ) $ 4,306 $ — Fannie Mae 136 — (1 ) (1 ) — — — (4 ) 45 (70 ) 106 — Ginnie Mae 5 — — — — — — (1 ) — — 4 — CMBS 3,326 — 41 41 — — — (15 ) — — 3,352 — Subprime 24,291 (53 ) 1,068 1,015 — — (2,423 ) (182 ) — — 22,701 (125 ) Option ARM 6,231 (12 ) 172 160 — — (616 ) (68 ) — — 5,707 (39 ) Alt-A and other 6,454 (85 ) 96 11 — — (1,021 ) 69 — — 5,513 (2 ) Obligations of states and political subdivisions 2,898 — (1 ) (1 ) — — — (404 ) — — 2,493 — Manufactured housing 668 — — — — — — (18 ) — — 650 — Total available-for-sale mortgage-related securities 46,901 (147 ) 1,376 1,229 4,364 — (6,137 ) (657 ) 45 (913 ) 44,832 (166 ) Trading, at fair value: Mortgage-related securities: Freddie Mac 1,252 41 — 41 915 7 (443 ) (13 ) — (864 ) 895 42 Fannie Mae 167 (2 ) — (2 ) — — — (3 ) 15 — 177 (2 ) Ginnie Mae — — — — — — — — — — — — Other 6 — — — — — — (2 ) — — 4 — Total trading mortgage-related securities 1,425 39 — 39 915 7 (443 ) (18 ) 15 (864 ) 1,076 40 Other assets: Guarantee asset (3) 1,587 (41 ) — (41 ) — 142 — (118 ) — — 1,570 (41 ) All other, at fair value 12 (4 ) — (4 ) — — — — — — 8 (4 ) Total other assets 1,599 (45 ) — (45 ) — 142 — (118 ) — — 1,578 (45 ) Realized and unrealized (gains) losses Balance, June 30, 2014 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 Transfers out of Level 3 Balance, September 30, 2014 Unrealized (gains) losses still held (in millions) Liabilities Other debt, at fair value $ 1,000 $ — $ — $ — $ — $ — $ — $ (1,000 ) $ — $ — $ — $ — Net derivatives (4) 58 (66 ) — (66 ) — — — 19 — — 11 (49 ) Nine months ended September 30, 2014 Realized and unrealized gains (losses) Balance, January 1, 2014 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 Transfers out of Level 3 Balance, September 30, 2014 Unrealized gains (losses) still held (in millions) Assets Investments in securities: Available-for-sale, at fair value: Mortgage-related securities: Freddie Mac $ 1,939 $ 1 $ 3 $ 4 $ 5,567 $ — $ (3,086 ) $ (79 ) $ 3 $ (42 ) $ 4,306 $ — Fannie Mae 131 — (4 ) (4 ) 48 — (55 ) (15 ) 1 — 106 — Ginnie Mae 12 — — — — — (6 ) (3 ) 1 — 4 — CMBS 3,109 — 269 269 — — — (26 ) — — 3,352 — Subprime 27,499 (456 ) 2,556 2,100 — — (5,628 ) (1,270 ) — — 22,701 (582 ) Option ARM 6,574 (41 ) 174 133 — — (791 ) (209 ) — — 5,707 (72 ) Alt-A and other 8,706 86 232 318 — — (3,409 ) (102 ) — — 5,513 (33 ) Obligations of states and political subdivisions 3,495 1 71 72 1 — (13 ) (1,062 ) — — 2,493 — Manufactured housing 684 — 21 21 — — — (55 ) — — 650 — Total available-for-sale mortgage-related securities 52,149 (409 ) 3,322 2,913 5,616 — (12,988 ) (2,821 ) 5 (42 ) 44,832 (687 ) Trading, at fair value: Mortgage-related securities: Freddie Mac 343 26 — 26 2,064 42 (1,480 ) (33 ) — (67 ) 895 30 Fannie Mae 221 (20 ) — (20 ) 14 — — (7 ) — (31 ) 177 (20 ) Ginnie Mae 74 — — — — — (70 ) (4 ) — — — (2 ) Other 8 (1 ) — (1 ) — — — (3 ) — — 4 (1 ) Total trading mortgage-related securities 646 5 — 5 2,078 42 (1,550 ) (47 ) — (98 ) 1,076 7 Other assets: Guarantee asset (3) 1,611 (146 ) — (146 ) — 290 — (185 ) — — 1,570 (145 ) All other, at fair value 9 (1 ) — (1 ) — — — — — — 8 (1 ) Total other assets 1,620 (147 ) — (147 ) — 290 — (185 ) — — 1,578 (146 ) Realized and unrealized (gains) losses Balance, January 1, 2014 Included in earnings (1) Included in other comprehensive income (1) Total Purchases Issues Sales Settlements, net Transfers into Level 3 Transfers out of Level 3 Balance, September 30, 2014 Unrealized (gains) losses still held (in millions) Liabilities Other debt, at fair value $ 1,528 $ (7 ) $ — $ (7 ) $ — $ — $ — $ (1,521 ) $ — $ — $ — $ — Net derivatives (4) 325 (95 ) — (95 ) — — — 62 — (281 ) 11 (30 ) (1) Changes in fair value for available-for-sale securities are recorded in AOCI, while gains and losses from sales are recorded in other gains (losses) on investment securities recognized in earnings on our consolidated statements of comprehensive income. For mortgage-related securities classified as trading, the realized and unrealized gains (losses) are recorded in other gains (losses) on investment securities recognized in earnings on our consolidated statements of comprehensive income. (2) Transfers out of Level 3 during the three and nine months ended September 30, 2015 consist primarily of certain mortgage-related securities due to an increased volume and level of activity in the market and availability of price quotes from dealers and third-party pricing services. Transfers into Level 3 during the three and nine months ended September 30, 2015 consist primarily of certain mortgage-related securities due to a lack of market activity and relevant price quotes from dealers and third-party pricing services. (3) Changes in fair value of the guarantee asset are recorded in other income on our consolidated statements of comprehensive income. (4) Amounts are prior to counterparty netting, cash collateral netting, net trade/settle receivable or payable and net derivative interest receivable or payable.
Table - Assets on Our Consolidated Balance Sheets Measured at Fair Value on a Non-Recurring Basis	Table 16.3 — Assets on Our Consolidated Balance Sheets Measured at Fair Value on a Non-Recurring Basis September 30, 2015 December 31, 2014 Level 1 Level 2 Level 3 Total Level 1 Level 2 Level 3 Total (in millions) Assets measured at fair value on a non-recurring basis: Mortgage loans (1) $ — $ 926 $ 6,039 $ 6,965 $ — $ 80 $ 8,962 $ 9,042 REO, net (2) — — 1,240 1,240 — — 1,665 1,665 Total assets measured at fair value on a non-recurring basis $ — $ 926 $ 7,279 $ 8,205 $ — $ 80 $ 10,627 $ 10,707 (1) Includes impaired mortgage loans that are classified as held-for-investment and have been measured for impairment based on the fair value of the underlying collateral, and held-for-sale mortgage loans where the fair value is below cost. (2) Represents the fair value of foreclosed properties that were measured at fair value subsequent to their initial classification as REO, net. The carrying amount of REO, net was reduced to fair value of $1.2 billion , less estimated costs to sell of $81 million (or approximately $1.1 billion ) at September 30, 2015 . The carrying amount of REO, net was reduced to fair value of $1.7 billion , less estimated costs to sell of $109 million (or approximately $1.6 billion ) at December 31, 2014 .
Table - Quantitative Information about Recurring Level 3 Fair Value Measurements for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value	Table 16.4 — Quantitative Information about Recurring Level 3 Fair Value Measurements for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value September 30, 2015 Total Fair Value Level 3 Fair Value Predominant Valuation Technique(s) Unobservable Inputs Type Range Weighted Average (dollars in millions) Recurring fair value measurements Assets Investments in securities Available-for-sale, at fair value Mortgage-related securities Freddie Mac $ 2,336 Discounted cash flows OAS (46) - 503 bps 89 bps 338 Risk metric Effective duration (1) (0.44) - 9.12 years 2.16 years 330 Other Total Freddie Mac $ 35,577 3,004 Fannie Mae 38 Single external source 19 Discounted cash flows Total Fannie Mae 7,836 57 Ginnie Mae 2 Discounted cash flows Total Ginnie Mae 173 2 CMBS 3,638 Risk metric Effective duration (1) 3.40 - 11.27 years 9.77 years Total CMBS 14,576 3,638 Subprime, option ARM, and Alt-A: Subprime 13,447 Median of external sources External pricing sources $72.4 - $76.6 $ 74.4 362 Other Total subprime 13,809 13,809 Option ARM 3,556 Median of external sources External pricing sources $67.3 - $73.5 $ 69.6 326 Other Total option ARM 3,882 3,882 Alt-A and other 2,908 Median of external sources External pricing sources $84.9 - $88.2 $ 86.5 724 Other Total Alt-A and other 3,646 3,632 Obligations of states and political subdivisions 1,331 Median of external sources External pricing sources $101.3 - $101.7 $ 101.5 149 Other Total obligations of states and political subdivisions 1,480 1,480 Manufactured housing 523 Median of external sources External pricing sources $91.4 - $94.8 $ 93.0 71 Other Total manufactured housing 594 594 Total available-for-sale mortgage-related securities 81,573 30,098 Trading, at fair value Mortgage-related securities Freddie Mac 266 Discounted cash flows OAS (145) - 1,542 bps 192 bps 149 Risk Metrics Effective duration (1) 2.07 - 14.72 years 7.33 years 28 Other Total Freddie Mac 16,324 443 Fannie Mae 42 Discounted cash flows Total Fannie Mae 6,887 42 Ginnie Mae 290 — Other 1 Discounted cash flows 1 Median of external sources Total other 147 2 Total trading mortgage-related securities 23,648 487 Total investments in securities $ 105,221 $ 30,585 Other assets: Guarantee asset, at fair value $ 1,494 Discounted cash flows OAS 17 - 198 bps 56 bps 110 Other Total guarantee asset, at fair value $ 1,604 1,604 Liabilities Net derivatives 23 Other Total net derivatives 1,065 23 Other liabilities: All other, at fair value 7 Other Total all other, at fair value 7 7 December 31, 2014 Total Fair Value Level 3 Fair Value Predominant Valuation Technique(s) Unobservable Inputs Type Range Weighted Average (dollars in millions) Recurring fair value measurements Assets Investments in securities Available-for-sale, at fair value Mortgage-related securities Freddie Mac $ 2,980 Discounted cash flows OAS (146) - 144 bps 83 bps 375 Risk metric Effective duration (1) 0.18 - 7.54 years 3.82 years 143 Median of external sources External pricing sources $103.2 - $104.4 $ 103.8 733 Other Total Freddie Mac $ 39,099 4,231 Fannie Mae 47 Median of external sources 29 Discounted cash flows 9 Other Total Fannie Mae 11,313 85 Ginnie Mae 4 Discounted cash flows Total Ginnie Mae 199 4 CMBS 2,726 Risk Metrics Effective duration (1) 5.84 - 10.65 years 9.59 years 748 Discounted cash flows OAS 181 -766 bps 421 bps Total CMBS 21,822 3,474 Subprime, option ARM, and Alt-A: Subprime 18,789 Median of external sources External pricing sources $71.0 - $76.1 $ 73.5 1,800 Other Total subprime 20,589 20,589 Option ARM 5,205 Median of external sources External pricing sources $65.3 - $70.9 $ 67.9 444 Other Total option ARM 5,649 5,649 Alt-A and other 4,116 Median of external sources External pricing sources $83.0 - $86.2 $ 84.5 911 Other Total Alt-A and other 5,043 5,027 Obligations of states and political subdivisions 1,992 Median of external sources External pricing sources $101.3 - $101.9 $ 101.6 206 Other Total obligations of states and political subdivisions 2,198 2,198 Manufactured housing 515 Median of external sources External pricing sources $89.3 - $92.4 $ 91.0 123 Single external source External pricing source $89.8 - $89.8 $ 89.8 Total manufactured housing 638 638 Total available-for-sale mortgage-related securities 106,550 41,895 Trading, at fair value Mortgage-related securities Freddie Mac 478 Discounted cash flows OAS (219) - 9,748 bps 169 bps 320 Risk Metrics Effective duration (1) 1.78 - 2.30 years 2.27 years 129 Other Total Freddie Mac 17,469 927 Fannie Mae 207 Discounted cash flows OAS (173) - 2,027 bps 204 bps 25 Other Total Fannie Mae 6,099 232 Ginnie Mae 16 1 Other 3 Median of external sources 1 Discounted cash flows Total other 171 4 Total trading mortgage-related securities 23,755 1,164 Total investments in securities $ 130,305 $ 43,059 Other assets: Guarantee asset, at fair value $ 1,285 Discounted cash flows OAS 17 - 202 bps 53 bps 341 Median of external sources External pricing sources $10.0 - $21.2 $ 16.6 Total guarantee asset, at fair value $ 1,626 1,626 All other, at fair value 5 Other Total all other, at fair value 5 5 Total other assets 1,631 1,631 Liabilities Net derivatives 10 Other Total net derivatives 1,141 10 (1) Effective duration is used as a proxy to represent the aggregate impact of key rate durations.
Table - Quantitative Information about Non-Recurring Level 3 Fair Value Measurements for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value	Table 16.5 — Quantitative Information about Non-Recurring Level 3 Fair Value Measurements for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value September 30, 2015 Total Fair Value Level 3 Fair Value Predominant Valuation Technique(s) Unobservable Inputs Type Range Weighted Average (dollars in millions) Non-recurring fair value measurements Mortgage loans $ 6,965 $ 6,039 Internal model Historical sales $3,000 - $854,400 $165,048 Internal model Housing sales index 42 - 418 bps 87 bps Third-party appraisal Property value $1 million - $30 million $28 million Income capitalization (1) Capitalization rates 6%- 9% 7% Median of external sources External pricing sources $39.5 - $95.4 $72.0 REO, net $ 1,240 $ 1,240 Internal model Historical sales proceeds $3,000 - $626,005 $154,140 Internal model Housing sales index 44 - 418 bps 86 bps December 31, 2014 Total Fair Value Level 3 Fair Value Predominant Valuation Technique(s) Unobservable Inputs Type Range Weighted Average (dollars in millions) Non-recurring fair value measurements Mortgage loans $ 8,962 $ 8,962 Internal model Historical sales $3,000 - $896,519 $162,556 Internal model Housing sales index 38 - 294 bps 82 bps Third-party appraisal Property value $11 million - $44 million $31 million Income capitalization (1) Capitalization rates 6%- 9% 7% REO, net $ 1,665 $ 1,665 Internal model Historical sales proceeds $3,008 - $896,519 $154,165 Internal model Housing sales index 38 - 294 bps 82 bps (1) The predominant valuation technique used for multifamily mortgage loans. Certain loans in this population are valued using other techniques, and the capitalization rate for those is not represented in the “Range” or “Weighted Average” above.
Table - Fair Value of Financial Instruments	Table 16.6 — Fair Value of Financial Instruments September 30, 2015 Fair Value GAAP Carrying Amount Level 1 Level 2 Level 3 Netting Adjustments Total (in millions) Financial Assets Cash and cash equivalents $ 5,000 $ 5,000 $ — $ — $ — $ 5,000 Restricted cash and cash equivalents 15,108 15,108 — — — 15,108 Federal funds sold and securities purchased under agreements to resell 38,738 — 38,738 — — 38,738 Investments in securities: Available-for-sale, at fair value 81,573 — 51,475 30,098 — 81,573 Trading, at fair value 35,806 12,158 23,161 487 — 35,806 Total investments in securities 117,379 12,158 74,636 30,585 — 117,379 Mortgage loans: Mortgage loans held by consolidated trusts 1,615,291 — 1,467,806 175,951 — 1,643,757 Unsecuritized mortgage loans 134,576 — 35,119 101,759 — 136,878 Total mortgage loans 1,749,867 — 1,502,925 277,710 — 1,780,635 Derivative assets, net 605 — 10,573 19 (9,987 ) 605 Guarantee asset 1,604 — — 1,812 — 1,812 Advances to lenders 858 — 858 — — 858 Total financial assets $ 1,929,159 $ 32,266 $ 1,627,730 $ 310,126 $ (9,987 ) $ 1,960,135 Financial Liabilities Debt, net: Debt securities of consolidated trusts held by third parties $ 1,539,108 $ — $ 1,623,303 $ 976 $ — $ 1,624,279 Other debt 408,281 — 405,038 10,768 — 415,806 Total debt, net 1,947,389 — 2,028,341 11,744 — 2,040,085 Derivative liabilities, net 1,670 — 15,164 42 (13,536 ) 1,670 Guarantee obligation 1,573 — — 2,995 — 2,995 Total financial liabilities $ 1,950,632 $ — $ 2,043,505 $ 14,781 $ (13,536 ) $ 2,044,750 December 31, 2014 Fair Value GAAP Carrying Amount Level 1 Level 2 Level 3 Netting Adjustments Total (in millions) Financial Assets Cash and cash equivalents $ 10,928 $ 10,928 $ — $ — $ — $ 10,928 Restricted cash and cash equivalents 8,535 8,535 — — — 8,535 Federal funds sold and securities purchased under agreements to resell 51,903 — 51,903 — — 51,903 Investments in securities: Available-for-sale, at fair value 106,550 — 64,655 41,895 — 106,550 Trading, at fair value 30,437 6,682 22,591 1,164 — 30,437 Total investments in securities 136,987 6,682 87,246 43,059 — 136,987 Mortgage loans: Mortgage loans held by consolidated trusts 1,558,094 — 1,387,412 197,896 — 1,585,308 Unsecuritized mortgage loans 142,486 — 22,305 119,157 — 141,462 Total mortgage loans 1,700,580 — 1,409,717 317,053 — 1,726,770 Derivative assets, net 822 5 9,912 27 (9,122 ) 822 Guarantee asset 1,626 — — 1,837 — 1,837 Total financial assets $ 1,911,381 $ 26,150 $ 1,558,778 $ 361,976 $ (9,122 ) $ 1,937,782 Financial Liabilities Debt, net: Debt securities of consolidated trusts held by third parties $ 1,479,473 $ — $ 1,521,508 $ 1,364 $ — $ 1,522,872 Other debt 450,069 — 444,748 13,371 — 458,119 Total debt, net 1,929,542 — 1,966,256 14,735 — 1,980,991 Derivative liabilities, net 1,963 28 13,495 37 (11,597 ) 1,963 Guarantee obligation 1,623 — — 3,127 — 3,127 Total financial liabilities $ 1,933,128 $ 28 $ 1,979,751 $ 17,899 $ (11,597 ) $ 1,986,081
Table - Difference between Fair Value and Unpaid Principal Balance for Certain Financial Instruments with Fair Value Option Elected	Table 16.7 — Difference between Fair Value and Unpaid Principal Balance for Certain Financial Instruments with Fair Value Option Elected September 30, 2015 December 31, 2014 Multifamily Held-For-Sale Mortgage Loans Other Debt - Long Term Multifamily Held-For-Sale Mortgage Loans Other Debt - Long Term (in millions) Fair value $ 20,880 $ 7,379 $ 12,130 $ 5,820 Unpaid principal balance 20,603 7,378 11,872 5,896 Difference $ 277 $ 1 $ 258 $ (76 )

Regulatory Capital (Tables)

Regulatory Capital (Tables)	9 Months Ended
	Sep. 30, 2015
Mortgage Banking [Abstract]
Table - Net Worth and Minimum Capital	Table 18.1 — Net Worth and Minimum Capital September 30, 2015 December 31, 2014 (in millions) GAAP net worth $ 1,299 $ 2,651 Core capital (deficit) (1)(2) $ (72,707 ) $ (71,415 ) Less: Minimum capital requirement (1) 19,364 20,090 Minimum capital surplus (deficit) (1) $ (92,071 ) $ (91,505 ) (1) Core capital and minimum capital figures for September 30, 2015 are estimates. FHFA is the authoritative source for our regulatory capital. (2) Core capital excludes certain components of GAAP total equity (i.e., AOCI and the liquidation preference of the senior preferred stock) as these items do not meet the statutory definition of core capital.

Selected Financial Statement 40

Selected Financial Statement Line Items (Tables)	9 Months Ended
	Sep. 30, 2015
Selected Financial Statement Data [Abstract]
Table - Significant Components of Other Income (Loss) and Other Expense on Our Consolidated Statements of Comprehensive Income	Table 19.1 — Significant Components of Other Income (Loss) and Other Expense on Our Consolidated Statements of Comprehensive Income Three Months Ended September 30, Nine Months Ended September 30, 2015 2014 2015 2014 (in millions) Other income (loss): Non-agency mortgage-related securities settlements (1) $ — $ 1,187 $ — $ 6,084 Gains (losses) on mortgage loans (197 ) 168 (1,321 ) 383 Other 322 441 889 862 Total other income (loss) $ 125 $ 1,796 $ (432 ) $ 7,329 Other expense: Property tax and insurance expense on held-for-sale loans $ (176 ) $ — $ (937 ) $ (62 ) Other (94 ) (43 ) (297 ) (137 ) Total other expense $ (270 ) $ (43 ) $ (1,234 ) $ (199 ) (1) Settlement agreements primarily related to lawsuits regarding our investments in certain non-agency mortgage-related securities is a significant component of other income during the three and nine months ended September 30, 2014 . For more information, see “NOTE 15: CONCENTRATION OF CREDIT AND OTHER RISKS — Non-Agency Mortgage-Related Security Issuers” in our 2014 Annual Report.
Table - Significant Components of Other Assets and Other Liabilities on Our Consolidated Balance Sheets	Table 19.2 — Significant Components of Other Assets and Other Liabilities on Our Consolidated Balance Sheets September 30, 2015 December 31, 2014 (in millions) Other assets: Accounts and other receivables (1) $ 4,527 $ 3,899 Current income tax receivable 1,718 1,048 Guarantee asset 1,604 1,626 Advances to lenders 858 — All other 1,079 1,121 Total other assets $ 9,786 $ 7,694 Other liabilities: Servicer liabilities $ 1,427 $ 1,847 Guarantee obligation 1,573 1,623 Accounts payable and accrued expenses 1,347 803 All other 1,307 785 Total other liabilities $ 5,654 $ 5,058 (1) Primarily consists of servicer receivables and other non-interest receivables.

Summary of Significant Accoun41

Summary of Significant Accounting Policies (Details) $ in Millions	Jan. 01, 2015USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)numberofreportablesegments	Sep. 30, 2014USD ($)
Change in Accounting Estimate [Line Items]
Number of reportable segments | numberofreportablesegments				3
Loan Loss Reserves Write Offs		$ 683	$ 1,088	$ 4,492	$ 3,769
Regulatory guidance AB 2012-02
Change in Accounting Estimate [Line Items]
Loan Loss Reserves Write Offs	$ 1,900

Conservatorship and Related M42

Conservatorship and Related Matters (Details) $ in Millions	3 Months Ended	9 Months Ended
	Sep. 30, 2015USD ($)	Sep. 30, 2015USD ($)
Conservatorship and Related Matters [Abstract]
Maximum limit of the UPB of mortgage-related investments portfolio at Dec. 31, 2015	$ 399,200	$ 399,200
Annual maximum percentage of mortgage-related investments portfolio limit under 2014 retained portfolio plan	90.00%	90.00%
Maximum limit of the UPB of mortgage-related investments portfolio under 2014 retained portfolio plan	$ 359,300	$ 359,300
Minimum limit of the UPB of mortgage-related investments portfolio	250,000	250,000
UPB of mortgage-related investments portfolio	367,100	$ 367,100
Annual percentage reduction of the mortgage-related investments portfolio		15.00%
Draw received	0
Aggregate dividend payments since conservatorship began	$ 96,500	$ 96,500

Variable Interest Entities (Det

Variable Interest Entities (Details) - USD ($) $ in Billions	Sep. 30, 2015	Dec. 31, 2014
Single-family trusts
Variable Interest Entity [Line Items]
Consolidated UPB of VIE	$ 1,600	$ 1,500
Other Guarantee Transactions
Variable Interest Entity [Line Items]
Consolidated UPB of VIE	$ 8.1	$ 7.4

Variable Interest Entities - Va

Variable Interest Entities - Variable Interests in VIEs for which We are not the Primary Beneficiary (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Assets [Abstract]
Restricted Cash and Cash Equivalents	$ 15,108	$ 8,535
Investments in Securities [Abstract]
Available-for-sale, at fair value	81,573	106,550
Trading Securities, Debt	35,806	30,437
Accrued interest receivable	6,052	6,034
Other Assets	9,786	7,694
Liabilities [Abstract]
Derivative liabilities, net	(1,670)	(1,963)
Other Liabilities	(5,654)	(5,058)
Freddie Mac Securities
Assets [Abstract]
Restricted Cash and Cash Equivalents	0	0
Investments in Securities [Abstract]
Available-for-sale, at fair value	35,577	39,099
Trading Securities, Debt	16,324	17,469
Accrued interest receivable	218	236
Other Assets	1,117	914
Liabilities [Abstract]
Derivative liabilities, net	0	0
Other Liabilities	(1,112)	(1,005)
Maximum Exposure to Loss	102,527	87,529
Total Assets of Non-Consolidated VIEs	121,143	103,253
Other
Assets [Abstract]
Restricted Cash and Cash Equivalents	3	3
Investments in Securities [Abstract]
Available-for-sale, at fair value	0	0
Trading Securities, Debt	0	0
Accrued interest receivable	8	7
Other Assets	527	495
Liabilities [Abstract]
Derivative liabilities, net	(28)	(30)
Other Liabilities	(565)	(560)
Maximum Exposure to Loss	10,613	10,419
Total Assets of Non-Consolidated VIEs	$ 23,070	$ 22,855

Mortgage Loans and Loan Loss 45

Mortgage Loans and Loan Loss Reserves (Details) $ in Millions	Jan. 01, 2015USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)transaction	Sep. 30, 2014USD ($)transaction	Dec. 31, 2014USD ($)
Accounts, Notes, Loans and Financing Receivables [Line Items]
Percent of Single-Family Credit Guarantee portfolio with second lien financing by third parties at origination		13.00%		13.00%		14.00%
Loan Loss Reseves Write Offs		$ 683	$ 1,088	$ 4,492	$ 3,769
Number of STACR transactions | transaction				6	5
Number of ACIS transactions | transaction				6	2
Mortgage loan UPB covered by federal agency issued insurance or partial guarantee		$ 3,300		$ 3,300		$ 3,600
Noncash acquisition, mortgage loans held-for-investment acquired				189,000	$ 137,100
Transfers from advances to lenders to loans HFI				$ 7,600
Regulatory guidance AB 2012-02
Accounts, Notes, Loans and Financing Receivables [Line Items]
Loan Loss Reseves Write Offs	$ 1,900
Unsecuritized
Accounts, Notes, Loans and Financing Receivables [Line Items]
Allowance for loan losses as a percentage of recorded investment of mortgage loans, held for investment		11.10%		11.10%		12.70%
Held by consolidated trusts
Accounts, Notes, Loans and Financing Receivables [Line Items]
Allowance for loan losses as a percentage of recorded investment of mortgage loans, held for investment		0.20%		0.20%		0.20%
Single-family
Accounts, Notes, Loans and Financing Receivables [Line Items]
Financing Receivable, Significant Purchases		$ 92,600	75,800	$ 271,600	182,200
Amount of mortgage loans reclassified to held-for-sale		2,500		10,600
Loan Loss Reseves Write Offs		680	1,088	4,483	3,767
Multifamily
Accounts, Notes, Loans and Financing Receivables [Line Items]
Financing Receivable, Significant Purchases		1,400	300	3,200	1,600
Financing Receivable, Significant Sales		6,000	4,500	21,200	12,900
Amount of mortgage loans reclassified to held-for-sale		1,800		2,100
Loan Loss Reseves Write Offs		$ 3	$ 0	$ 9	$ 2

Mortgage Loans and Loan Loss 46

Mortgage Loans and Loan Loss Reserves - Mortgage Loans (Details) - USD ($) $ in Millions	Sep. 30, 2015	Jun. 30, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	$ 1,743,727		$ 1,699,352
Deferred fees, unamortized premiums, discounts and other cost basis adjustments	23,419		22,732
Fair value adjustments on loans held-for-sale	(860)		257
Allowance for loan losses on mortgage loans held-for-investment	(16,419)		(21,761)
Total mortgage loans, net	1,749,867		1,700,580
Mortgage loans held-for-investment	1,722,014		1,688,212
Mortgage loans held-for-sale	27,853		12,368
Total mortgage loans, net	1,749,867		1,700,580
Single-family
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	1,687,770		1,645,872
Allowance for loan losses on mortgage loans held-for-investment	(16,374)		(21,684)
Mortgage loans held-for-investment	1,688,832		1,646,936
Single-family | Fixed-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	1,590,141		1,541,669
Single-family | Fixed-rate amortizing
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	1,587,039		1,537,432
Single-family | Fixed-rate interest-only
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	3,102		4,237
Single-family | Adjustable-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	88,205		93,549
Single-family | Adjustable-rate amortizing
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	67,825		69,985
Single-family | Adjustable-rate interest-only
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	20,380		23,564
Single-family | Other Guarantee Transactions
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	6,123		7,042
Single-family | FHA/VA and other governmental
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	3,301		3,612
Multifamily
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	55,957		53,480
Allowance for loan losses on mortgage loans held-for-investment	(45)		(77)
Mortgage loans held-for-investment	33,182		41,276
Multifamily | Fixed-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	44,522		44,156
Multifamily | Adjustable-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	11,432		9,321
Multifamily | FHA/VA and other governmental
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	3		3
Unsecuritized
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	153,415		164,472
Deferred fees, unamortized premiums, discounts and other cost basis adjustments	(4,611)		(3,366)
Fair value adjustments on loans held-for-sale	(860)		257
Allowance for loan losses on mortgage loans held-for-investment	(13,368)	$ (14,589)	(18,877)	$ (19,473)	$ (20,047)	$ (21,612)
Total mortgage loans, net	134,576		142,486
Mortgage loans held-for-investment	106,723		130,118
Mortgage loans held-for-sale	27,853		12,368
Total mortgage loans, net	134,576		142,486
Unsecuritized | Single-family
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	99,195		111,516
Allowance for loan losses on mortgage loans held-for-investment	(13,324)	(14,535)	(18,800)	(19,392)	(19,956)	(21,487)
Unsecuritized | Single-family | Fixed-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	95,214		106,499
Unsecuritized | Single-family | Fixed-rate amortizing
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	94,573		105,560
Unsecuritized | Single-family | Fixed-rate interest-only
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	641		939
Unsecuritized | Single-family | Adjustable-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	3,528		4,544
Unsecuritized | Single-family | Adjustable-rate amortizing
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	1,070		1,353
Unsecuritized | Single-family | Adjustable-rate interest-only
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	2,458		3,191
Unsecuritized | Single-family | Other Guarantee Transactions
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	0		0
Unsecuritized | Single-family | FHA/VA and other governmental
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	453		473
Unsecuritized | Multifamily
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	54,220		52,956
Allowance for loan losses on mortgage loans held-for-investment	(44)	(54)	(77)	(81)	(91)	(125)
Unsecuritized | Multifamily | Fixed-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	42,785		43,632
Unsecuritized | Multifamily | Adjustable-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	11,432		9,321
Unsecuritized | Multifamily | FHA/VA and other governmental
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	3		3
Held by consolidated trusts
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	1,590,312		1,534,880
Deferred fees, unamortized premiums, discounts and other cost basis adjustments	28,030		26,098
Fair value adjustments on loans held-for-sale	0		0
Allowance for loan losses on mortgage loans held-for-investment	(3,051)	(2,738)	(2,884)	(3,101)	(2,652)	(3,006)
Total mortgage loans, net	1,615,291		1,558,094
Mortgage loans held-for-investment	1,615,291		1,558,094
Mortgage loans held-for-sale	0		0
Total mortgage loans, net	1,615,291		1,558,094
Held by consolidated trusts | Single-family
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	1,588,575		1,534,356
Allowance for loan losses on mortgage loans held-for-investment	(3,050)	(2,738)	(2,884)	(3,101)	(2,652)	(3,006)
Held by consolidated trusts | Single-family | Fixed-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	1,494,927		1,435,170
Held by consolidated trusts | Single-family | Fixed-rate amortizing
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	1,492,466		1,431,872
Held by consolidated trusts | Single-family | Fixed-rate interest-only
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	2,461		3,298
Held by consolidated trusts | Single-family | Adjustable-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	84,677		89,005
Held by consolidated trusts | Single-family | Adjustable-rate amortizing
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	66,755		68,632
Held by consolidated trusts | Single-family | Adjustable-rate interest-only
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	17,922		20,373
Held by consolidated trusts | Single-family | Other Guarantee Transactions
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	6,123		7,042
Held by consolidated trusts | Single-family | FHA/VA and other governmental
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	2,848		3,139
Held by consolidated trusts | Multifamily
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	1,737		524
Allowance for loan losses on mortgage loans held-for-investment	(1)	$ 0	0	$ 0	$ 0	$ 0
Held by consolidated trusts | Multifamily | Fixed-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	1,737		524
Held by consolidated trusts | Multifamily | Adjustable-rate
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	0		0
Held by consolidated trusts | Multifamily | FHA/VA and other governmental
Accounts, Notes, Loans and Financing Receivables [Line Items]
UPB of Mortgage Loans	$ 0		$ 0

Mortgage Loans and Loan Loss 47

Mortgage Loans and Loan Loss Reserves - Recorded Investment of Single-Family Mortgage Loans, by LTV Ratio (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	$ 1,738,433	$ 1,709,973
Single-Family serious delinquency rate	1.41%	1.88%
UPB for Single-family reduced interest rate provision	$ 39,500	$ 42,300
Single-family 20 and 30-year or more, amortizing fixed-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	1,300,466	1,254,595
Single-family 15-year amortizing fixed-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	286,121	282,537
Single-family Adjustable-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	65,950	67,873
Single-family Alt-A, interest-only, and option ARM
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	52,669	63,615
Single Family Loans
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	$ 1,705,206	$ 1,668,620
Single-Family serious delinquency rate	1.41%	1.88%
Less Than Or Equal To 80 Estimated Current LTV Ratio | Single-family 20 and 30-year or more, amortizing fixed-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	$ 988,352	$ 911,071
Less Than Or Equal To 80 Estimated Current LTV Ratio | Single-family 15-year amortizing fixed-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	270,533	265,098
Less Than Or Equal To 80 Estimated Current LTV Ratio | Single-family Adjustable-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	60,044	60,463
Less Than Or Equal To 80 Estimated Current LTV Ratio | Single-family Alt-A, interest-only, and option ARM
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	27,696	28,935
Less Than Or Equal To 80 Estimated Current LTV Ratio | Single Family Loans
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	1,346,625	1,265,567
Greater Than 80 Through 100 Estimated Current LTV Ratio | Single-family 20 and 30-year or more, amortizing fixed-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	251,940	258,126
Greater Than 80 Through 100 Estimated Current LTV Ratio | Single-family 15-year amortizing fixed-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	13,427	14,101
Greater Than 80 Through 100 Estimated Current LTV Ratio | Single-family Adjustable-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	5,559	6,701
Greater Than 80 Through 100 Estimated Current LTV Ratio | Single-family Alt-A, interest-only, and option ARM
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	14,597	18,232
Greater Than 80 Through 100 Estimated Current LTV Ratio | Single Family Loans
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	285,523	297,160
Greater Than 100 Estimated Current LTV Ratio | Single-family 20 and 30-year or more, amortizing fixed-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	60,174	85,398
Greater Than 100 Estimated Current LTV Ratio | Single-family 15-year amortizing fixed-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	2,161	3,338
Greater Than 100 Estimated Current LTV Ratio | Single-family Adjustable-rate
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	347	709
Greater Than 100 Estimated Current LTV Ratio | Single-family Alt-A, interest-only, and option ARM
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	10,376	16,448
Greater Than 100 Estimated Current LTV Ratio | Single Family Loans
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	$ 73,058	$ 105,893
Single-Family serious delinquency rate	6.39%	9.01%

Mortgage Loans and Loan Loss 48

Mortgage Loans and Loan Loss Reserves - Recorded Investment of Multifamily Mortgage Loans, by Credit Classification (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	$ 1,738,433	$ 1,709,973
Multifamily Loans
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	33,227	41,353
Pass | Multifamily Loans
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	31,341	38,518
Special Mention | Multifamily Loans
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	1,291	1,805
Substandard | Multifamily Loans
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	595	1,030
Doubtful | Multifamily Loans
Financing Receivable, Recorded Investment [Line Items]
Recorded investment of held-for-investment mortgage loans	$ 0	$ 0

Mortgage Loans and Loan Loss 49

Mortgage Loans and Loan Loss Reserves - Detail of Loan Loss Reserves (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)
Rollforward of Allowance for Loan Losses
Beginning balance			$ 21,761
Ending balance	$ 16,419		16,419
Reserve For Guarantee Losses Rollforward
Beginning balance	81	$ 116	126	$ 111
Provision (benefit) for credit losses	8	(4)	(33)	4
Charge-offs	(2)	(2)	(6)	(5)
Recoveries	0	0	0	0
Transfers, net	(1)	0	(1)	0
Ending balance	86	110	86	110
Rollforward of Total loan loss reserves
Beginning balance	17,408	22,815	21,887	24,729
Provision (benefit) for credit losses	(528)	574	(1,884)	41
Charge-offs	(683)	(1,088)	(4,492)	(3,769)
Recoveries	177	191	547	1,101
Transfers, net	131	192	447	582
Ending balance	16,505	22,684	16,505	22,684
Capitalization of past due interest on modified loans
Rollforward of Total loan loss reserves
Transfers, net	100	200	400	600
Single-family
Rollforward of Allowance for Loan Losses
Beginning balance			21,684
Ending balance	16,374		16,374
Reserve For Guarantee Losses Rollforward
Beginning balance	67	100	109	85
Provision (benefit) for credit losses	2	(5)	(36)	13
Charge-offs	(2)	(2)	(6)	(5)
Recoveries	0	0	0	0
Transfers, net	(1)	0	(1)	0
Ending balance	66	93	66	93
Rollforward of Total loan loss reserves
Beginning balance	17,340	22,708	21,793	24,578
Provision (benefit) for credit losses	(528)	584	(1,864)	93
Charge-offs	(680)	(1,088)	(4,483)	(3,767)
Recoveries	177	190	547	1,100
Transfers, net	131	192	447	582
Ending balance	$ 16,440	$ 22,586	16,440	22,586
Ratio of total loan loss reserves (excluding reserves for TDR concessions) to annualized net charge-offs for single-family mortgage loans	2.9	3.1
Ratio of total loan loss reserves to annualized net charge-offs for single-family mortgage loans	8.2	6.3
Multifamily
Rollforward of Allowance for Loan Losses
Beginning balance			77
Ending balance	$ 45		45
Reserve For Guarantee Losses Rollforward
Beginning balance	14	$ 16	17	26
Provision (benefit) for credit losses	6	1	3	(9)
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Transfers, net	0	0	0	0
Ending balance	20	17	20	17
Rollforward of Total loan loss reserves
Beginning balance	68	107	94	151
Provision (benefit) for credit losses	0	(10)	(20)	(52)
Charge-offs	(3)	0	(9)	(2)
Recoveries	0	1	0	1
Transfers, net	0	0	0	0
Ending balance	65	98	65	98
Unsecuritized
Rollforward of Allowance for Loan Losses
Beginning balance	14,589	20,047	18,877	21,612
Provision (benefit) for credit losses	(658)	200	(2,073)	(708)
Charge-offs	(608)	(1,014)	(4,188)	(3,466)
Recoveries	174	185	535	849
Transfers, net	(129)	55	217	1,186
Ending balance	13,368	19,473	13,368	19,473
Unsecuritized | Single-family
Rollforward of Allowance for Loan Losses
Beginning balance	14,535	19,956	18,800	21,487
Provision (benefit) for credit losses	(652)	211	(2,050)	(665)
Charge-offs	(605)	(1,014)	(4,179)	(3,464)
Recoveries	174	184	535	848
Transfers, net	(128)	55	218	1,186
Ending balance	13,324	19,392	13,324	19,392
Unsecuritized | Multifamily
Rollforward of Allowance for Loan Losses
Beginning balance	54	91	77	125
Provision (benefit) for credit losses	(6)	(11)	(23)	(43)
Charge-offs	(3)	0	(9)	(2)
Recoveries	0	1	0	1
Transfers, net	(1)	0	(1)	0
Ending balance	44	81	44	81
Held by consolidated trusts
Rollforward of Allowance for Loan Losses
Beginning balance	2,738	2,652	2,884	3,006
Provision (benefit) for credit losses	122	378	222	745
Charge-offs	(73)	(72)	(298)	(298)
Recoveries	3	6	12	252
Transfers, net	261	137	231	(604)
Ending balance	3,051	3,101	3,051	3,101
Held by consolidated trusts | Single-family
Rollforward of Allowance for Loan Losses
Beginning balance	2,738	2,652	2,884	3,006
Provision (benefit) for credit losses	122	378	222	745
Charge-offs	(73)	(72)	(298)	(298)
Recoveries	3	6	12	252
Transfers, net	260	137	230	(604)
Ending balance	3,050	3,101	3,050	3,101
Held by consolidated trusts | Multifamily
Rollforward of Allowance for Loan Losses
Beginning balance	0	0	0	0
Provision (benefit) for credit losses	0	0	0	0
Charge-offs	0	0	0	0
Recoveries	0	0	0	0
Transfers, net	1	0	1	0
Ending balance	$ 1	$ 0	$ 1	$ 0

Mortgage Loans and Loan Loss 50

Mortgage Loans and Loan Loss Reserves - Net Investment in Mortgage Loans (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment, collectively evaluated	$ 1,645,140	$ 1,608,688
Recorded investment, individually evaluated	93,293	101,285
Total recorded investment	1,738,433	1,709,973
Allowance for loan losses, collectively evaluated	(1,548)	(3,872)
Allowance for loan losses, individually evaluated	(14,871)	(17,889)
Total ending balance of the allowance	(16,419)	(21,761)
Net investment in mortgage loans	1,722,014	1,688,212
Single-family
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment, collectively evaluated	1,612,481	1,568,237
Recorded investment, individually evaluated	92,725	100,383
Total recorded investment	1,705,206	1,668,620
Allowance for loan losses, collectively evaluated	(1,527)	(3,847)
Allowance for loan losses, individually evaluated	(14,847)	(17,837)
Total ending balance of the allowance	(16,374)	(21,684)
Net investment in mortgage loans	1,688,832	1,646,936
Multifamily
Financing Receivable, Allowance for Credit Losses [Line Items]
Recorded investment, collectively evaluated	32,659	40,451
Recorded investment, individually evaluated	568	902
Total recorded investment	33,227	41,353
Allowance for loan losses, collectively evaluated	(21)	(25)
Allowance for loan losses, individually evaluated	(24)	(52)
Total ending balance of the allowance	(45)	(77)
Net investment in mortgage loans	$ 33,182	$ 41,276

Mortgage Loans and Loan Loss 51

Mortgage Loans and Loan Loss Reserves - Recourse and Other Forms of Credit Protection (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Recourse And Other Forms Of Credit Protection [Line Items]
Excluded credit protected mortgage loans UPB underlying Other Guarantee Transactions	$ 8,700	$ 9,800
STACR debt note and ACIS transactions
Recourse And Other Forms Of Credit Protection [Line Items]
Excluded credit protected mortgage loans UPB also covered by primary mortgage insurance	72,600	48,300
Pool insurance
Recourse And Other Forms Of Credit Protection [Line Items]
Excluded credit protected mortgage loans UPB also covered by primary mortgage insurance	700	900
Single-family
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	477,383	386,332
Credit protected mortgage loans Maximum Coverage	84,939	75,315
Single-family | Primary mortgage insurance
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	249,182	227,495
Credit protected mortgage loans Maximum Coverage	63,693	57,938
Single-family | STACR debt note and ACIS transactions
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	214,902	144,272
Credit protected mortgage loans Maximum Coverage	11,906	6,657
Single-family | Lender recourse and indemnification
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	6,267	6,527
Credit protected mortgage loans Maximum Coverage	5,505	6,092
Single-family | Pool insurance
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	1,821	2,284
Credit protected mortgage loans Maximum Coverage	790	947
Single-family | HFA indemnification
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	2,715	3,357
Credit protected mortgage loans Maximum Coverage	2,715	3,324
Single-family | Subordination
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	2,477	2,377
Credit protected mortgage loans Maximum Coverage	315	339
Single-family | Other credit enhancements
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	19	20
Credit protected mortgage loans Maximum Coverage	15	18
Multifamily
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	102,936	86,743
Credit protected mortgage loans Maximum Coverage	20,372	16,756
Multifamily | K Certificates
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	90,704	75,541
Credit protected mortgage loans Maximum Coverage	16,488	13,576
Multifamily | HFA indemnification
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	711	772
Credit protected mortgage loans Maximum Coverage	699	699
Multifamily | Subordination
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	5,252	4,724
Credit protected mortgage loans Maximum Coverage	887	796
Multifamily | Other credit enhancements
Recourse And Other Forms Of Credit Protection [Line Items]
Credit protected mortgage loans UPB	6,269	5,706
Credit protected mortgage loans Maximum Coverage	$ 2,298	$ 1,685

Impaired Mortgage Loans (Detail

Impaired Mortgage Loans (Details) $ in Billions	3 Months Ended	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2015USD ($)numberofloans	Sep. 30, 2014USD ($)numberofloans
Other loss mitigation activities
Impaired Loans [Line Items]
Number of Loans, Modifications, Subsequent Default		7,280	6,779
Post-TDR Recorded Investment, Modifications, Subsequent Default | $		$ 0.9	$ 1
Loans discharged from Chapter 7 bankruptcy
Impaired Loans [Line Items]
Number of Loans, Modifications, Subsequent Default		1,821	3,027
Post-TDR Recorded Investment, Modifications, Subsequent Default | $		$ 0.2	$ 0.5
Single-family
Impaired Loans [Line Items]
Interest rate reduction and term extension types, percentage of completed modifications	43.00%	43.00%
Principal forebearance and interest rate reductions and term extension types, percentage of completed modifications	16.00%	16.00%
Average term extension, number of months of completed modifications	185 months	191 months
Average interest rate reduction, percentage of completed modifications	0.90%	0.90%

Impaired Mortgage Loans - Indiv

Impaired Mortgage Loans - Individially Impaired Mortgage Loans (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Individually Impaired Mortgage Loans [Abstract]
UPB	$ 97,207		$ 97,207		$ 105,394
Recorded Investment	93,293		93,293		101,285
Associated Allowance	(14,871)		(14,871)		(17,889)
Net Investment	78,422		78,422		83,396
Average Recorded Investment	93,714	$ 100,652	96,210	$ 100,205
Interest Income Recognized	873	845	2,634	2,492
Interest Income Recognized On Cash Basis	87	126	320	322
Single-family 20 and 30-year or more, amortizing fixed-rate
With no specific allowance recorded [Abstract]
UPB	4,583		4,583		6,041
Recorded Investment	3,390		3,390		4,007
Net Investment	3,390		3,390		4,007
Average Recorded Investment	3,415	3,941	3,265	3,618
Interest Income Recognized	100	105	288	277
Interest Income Recognized On Cash Basis	2	12	9	27
With specific allowance recorded [Abstract]
UPB	74,152		74,152		77,798
Recorded Investment	72,351		72,351		76,708
Net Investment	60,469		60,469		62,657
Average Recorded Investment	72,585	76,001	74,209	75,562
Interest Income Recognized	627	588	1,898	1,760
Interest Income Recognized On Cash Basis	67	82	242	213
Individually Impaired Mortgage Loans [Abstract]
UPB	78,735		78,735		83,839
Recorded Investment	75,741		75,741		80,715
Associated Allowance	(11,882)		(11,882)		(14,051)
Net Investment	63,859		63,859		66,664
Average Recorded Investment	76,000	79,942	77,474	79,180
Interest Income Recognized	727	693	2,186	2,037
Interest Income Recognized On Cash Basis	69	94	251	240
Single-family 15-year amortizing fixed-rate
With no specific allowance recorded [Abstract]
UPB	45		45		63
Recorded Investment	37		37		44
Net Investment	37		37		44
Average Recorded Investment	38	45	42	37
Interest Income Recognized	2	3	6	7
Interest Income Recognized On Cash Basis	0	0	0	1
With specific allowance recorded [Abstract]
UPB	1,001		1,001		1,226
Recorded Investment	1,004		1,004		1,233
Net Investment	982		982		1,193
Average Recorded Investment	989	1,225	1,056	1,255
Interest Income Recognized	11	13	35	41
Interest Income Recognized On Cash Basis	2	3	8	7
Individually Impaired Mortgage Loans [Abstract]
UPB	1,046		1,046		1,289
Recorded Investment	1,041		1,041		1,277
Associated Allowance	(22)		(22)		(40)
Net Investment	1,019		1,019		1,237
Average Recorded Investment	1,027	1,270	1,098	1,292
Interest Income Recognized	13	16	41	48
Interest Income Recognized On Cash Basis	2	3	8	8
Single-family Adjustable-rate
With no specific allowance recorded [Abstract]
UPB	137		137		27
Recorded Investment	133		133		22
Net Investment	133		133		22
Average Recorded Investment	135	22	84	15
Interest Income Recognized	1	0	2	1
Interest Income Recognized On Cash Basis	0	0	0	0
With specific allowance recorded [Abstract]
UPB	591		591		868
Recorded Investment	585		585		866
Net Investment	553		553		801
Average Recorded Investment	579	857	676	891
Interest Income Recognized	4	5	14	17
Interest Income Recognized On Cash Basis	1	2	3	4
Individually Impaired Mortgage Loans [Abstract]
UPB	728		728		895
Recorded Investment	718		718		888
Associated Allowance	(32)		(32)		(65)
Net Investment	686		686		823
Average Recorded Investment	714	879	760	906
Interest Income Recognized	5	5	16	18
Interest Income Recognized On Cash Basis	1	2	3	4
Single-family Alt-A, interest-only, and option ARM
With no specific allowance recorded [Abstract]
UPB	1,158		1,158		1,717
Recorded Investment	840		840		1,168
Net Investment	840		840		1,168
Average Recorded Investment	844	1,151	781	1,119
Interest Income Recognized	20	22	59	60
Interest Income Recognized On Cash Basis	0	2	2	4
With specific allowance recorded [Abstract]
UPB	14,959		14,959		16,734
Recorded Investment	14,385		14,385		16,335
Net Investment	11,474		11,474		12,654
Average Recorded Investment	14,509	16,410	15,201	16,531
Interest Income Recognized	100	95	305	286
Interest Income Recognized On Cash Basis	11	19	44	46
Individually Impaired Mortgage Loans [Abstract]
UPB	16,117		16,117		18,451
Recorded Investment	15,225		15,225		17,503
Associated Allowance	(2,911)		(2,911)		(3,681)
Net Investment	12,314		12,314		13,822
Average Recorded Investment	15,353	17,561	15,982	17,650
Interest Income Recognized	120	117	364	346
Interest Income Recognized On Cash Basis	11	21	46	50
Single-family
With no specific allowance recorded [Abstract]
UPB	5,923		5,923		7,848
Recorded Investment	4,400		4,400		5,241
Net Investment	4,400		4,400		5,241
Average Recorded Investment	4,432	5,159	4,172	4,789
Interest Income Recognized	123	130	355	345
Interest Income Recognized On Cash Basis	2	14	11	32
With specific allowance recorded [Abstract]
UPB	90,703		90,703		96,626
Recorded Investment	88,325		88,325		95,142
Net Investment	73,478		73,478		77,305
Average Recorded Investment	88,662	94,493	91,142	94,239
Interest Income Recognized	742	701	2,252	2,104
Interest Income Recognized On Cash Basis	81	106	297	270
Individually Impaired Mortgage Loans [Abstract]
UPB	96,626		96,626		104,474
Recorded Investment	92,725		92,725		100,383
Associated Allowance	(14,847)		(14,847)		(17,837)
Net Investment	77,878		77,878		82,546
Average Recorded Investment	93,094	99,652	95,314	99,028
Interest Income Recognized	865	831	2,607	2,449
Interest Income Recognized On Cash Basis	83	120	308	302
Multifamily
With no specific allowance recorded [Abstract]
UPB	399		399		440
Recorded Investment	391		391		431
Net Investment	391		391		431
Average Recorded Investment	423	526	635	656
Interest Income Recognized	6	8	20	24
Interest Income Recognized On Cash Basis	3	2	7	7
With specific allowance recorded [Abstract]
UPB	182		182		480
Recorded Investment	177		177		471
Net Investment	153		153		419
Average Recorded Investment	197	474	261	521
Interest Income Recognized	2	6	7	19
Interest Income Recognized On Cash Basis	1	4	5	13
Individually Impaired Mortgage Loans [Abstract]
UPB	581		581		920
Recorded Investment	568		568		902
Associated Allowance	(24)		(24)		(52)
Net Investment	544		544		$ 850
Average Recorded Investment	620	1,000	896	1,177
Interest Income Recognized	8	14	27	43
Interest Income Recognized On Cash Basis	$ 4	$ 6	$ 12	$ 20

Impaired Mortgage Loans - Payme

Impaired Mortgage Loans - Payment Status of Mortgage Loans (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	$ 1,695,533	$ 1,649,778
One Month Past Due	20,226	21,307
Two Months Past Due	6,207	7,110
Three Months or More Past Due, or in Foreclosure	16,467	31,778
Total recorded investment	1,738,433	1,709,973
Non-Accrual	16,704	32,157
Mortgage loans in process of foreclosure, amount	7,500	17,900
Single-family 20 and 30-year or more, amortizing fixed-rate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,265,447	1,207,826
One Month Past Due	16,770	17,516
Two Months Past Due	5,151	5,817
Three Months or More Past Due, or in Foreclosure	13,098	23,436
Total recorded investment	1,300,466	1,254,595
Non-Accrual	13,095	23,433
Single-family 15-year amortizing fixed-rate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	284,626	280,629
One Month Past Due	965	1,010
Two Months Past Due	185	216
Three Months or More Past Due, or in Foreclosure	345	682
Total recorded investment	286,121	282,537
Non-Accrual	345	682
Single-family Adjustable-rate
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	65,206	66,737
One Month Past Due	393	406
Two Months Past Due	94	118
Three Months or More Past Due, or in Foreclosure	257	612
Total recorded investment	65,950	67,873
Non-Accrual	257	612
Single-family Alt-A, interest-only, and option ARM
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	47,027	53,251
One Month Past Due	2,098	2,368
Two Months Past Due	777	948
Three Months or More Past Due, or in Foreclosure	2,767	7,048
Total recorded investment	52,669	63,615
Non-Accrual	2,765	7,045
Single-family
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	1,662,306	1,608,443
One Month Past Due	20,226	21,300
Two Months Past Due	6,207	7,099
Three Months or More Past Due, or in Foreclosure	16,467	31,778
Total recorded investment	1,705,206	1,668,620
Non-Accrual	16,462	31,772
Multifamily
Financing Receivable, Recorded Investment, Past Due [Line Items]
Current	33,227	41,335
One Month Past Due	0	7
Two Months Past Due	0	11
Three Months or More Past Due, or in Foreclosure	0	0
Total recorded investment	33,227	41,353
Non-Accrual	$ 242	$ 385

Impaired Mortgage Loans - Delin

Impaired Mortgage Loans - Delinquency Rates (Details) $ in Millions	Sep. 30, 2015USD ($)numberofloans	Dec. 31, 2014USD ($)numberofloans
Delinquent Mortgage Loan Attributes [Line Items]
Serious delinquency rate	1.41%	1.88%
Delinquency Rate	0.01%	0.04%
Single-family
Delinquent Mortgage Loan Attributes [Line Items]
Serious delinquency rate	1.41%	1.88%
Total number of seriously delinquent loans	150,564	200,069
Single-family | Non-credit-enhanced portfolio
Delinquent Mortgage Loan Attributes [Line Items]
Serious delinquency rate	1.36%	1.74%
Total number of seriously delinquent loans	111,964	150,300
Single-family | Credit-enhanced portfolio | Primary mortgage insurance
Delinquent Mortgage Loan Attributes [Line Items]
Serious delinquency rate	2.26%	3.10%
Total number of seriously delinquent loans	29,805	38,595
Single-family | Credit-enhanced portfolio | Other credit protection
Delinquent Mortgage Loan Attributes [Line Items]
Serious delinquency rate	0.67%	1.21%
Total number of seriously delinquent loans	9,762	12,175
Multifamily
Delinquent Mortgage Loan Attributes [Line Items]
Delinquency Rate	0.01%	0.04%
UPB of delinquent loans | $	$ 21	$ 55
Multifamily | Non-credit-enhanced portfolio
Delinquent Mortgage Loan Attributes [Line Items]
Delinquency Rate	0.00%	0.02%
UPB of delinquent loans | $	$ 0	$ 11
Multifamily | Credit-enhanced portfolio
Delinquent Mortgage Loan Attributes [Line Items]
Delinquency Rate	0.02%	0.05%
UPB of delinquent loans | $	$ 21	$ 44

Impaired Mortgage Loans - TDR A

Impaired Mortgage Loans - TDR Activity, By Segment (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)numberofloans	Sep. 30, 2014USD ($)numberofloans	Sep. 30, 2015USD ($)numberofloans	Sep. 30, 2014USD ($)numberofloans
Financing Receivable, Modifications [Line Items]
Number of Loans | numberofloans	13,561	21,592	44,887	66,177
Post TDR Recorded Investments	$ 1,841	$ 3,136	$ 6,270	$ 9,946
Single-family 20 and 30-year or more, amortizing fixed-rate
Financing Receivable, Modifications [Line Items]
Number of Loans | numberofloans	10,899	17,194	35,922	52,356
Post TDR Recorded Investments	$ 1,530	$ 2,518	$ 5,121	$ 7,863
Single-family 15-year amortizing fixed-rate
Financing Receivable, Modifications [Line Items]
Number of Loans | numberofloans	1,428	1,931	4,483	5,278
Post TDR Recorded Investments	$ 102	$ 139	$ 327	$ 394
Single-family Adjustable-rate
Financing Receivable, Modifications [Line Items]
Number of Loans | numberofloans	293	397	1,026	1,336
Post TDR Recorded Investments	$ 42	$ 61	$ 150	$ 207
Single-family Alt-A, interest-only, and option ARM
Financing Receivable, Modifications [Line Items]
Number of Loans | numberofloans	941	2,070	3,455	7,206
Post TDR Recorded Investments	$ 167	$ 418	$ 642	$ 1,472
Single-family
Financing Receivable, Modifications [Line Items]
Number of Loans | numberofloans	13,561	21,592	44,886	66,176
Post TDR Recorded Investments	$ 1,841	$ 3,136	$ 6,240	$ 9,936
Pre-TDR Recorded Investments	$ 1,800	$ 3,100	$ 6,200	$ 9,900
Multifamily
Financing Receivable, Modifications [Line Items]
Number of Loans | numberofloans	0	0	1	1
Post TDR Recorded Investments	$ 0	$ 0	$ 30	$ 10

Impaired Mortgage Loans - Pay57

Impaired Mortgage Loans - Payment Defaults of Completed TDR Modifications, by Segment (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)numberofloans	Sep. 30, 2014USD ($)numberofloans	Sep. 30, 2015USD ($)numberofloans	Sep. 30, 2014USD ($)numberofloans
Single-family 20 and 30-year or more, amortizing fixed-rate
Financing Receivable, Modifications and Other Loss Mitigation Activities
Number of Loans, Modifications, Subsequent Default	4,919	5,190	13,692	13,814
Post-TDR Recorded Investment, Modifications, Subsequent Default | $	$ 787	$ 922	$ 2,278	$ 2,483
Single-family 15-year amortizing fixed-rate
Financing Receivable, Modifications and Other Loss Mitigation Activities
Number of Loans, Modifications, Subsequent Default	227	170	664	461
Post-TDR Recorded Investment, Modifications, Subsequent Default | $	$ 17	$ 16	$ 54	$ 45
Single-family Adjustable-rate
Financing Receivable, Modifications and Other Loss Mitigation Activities
Number of Loans, Modifications, Subsequent Default	93	88	243	250
Post-TDR Recorded Investment, Modifications, Subsequent Default | $	$ 15	$ 15	$ 41	$ 46
Single-family Alt-A, interest-only, and option ARM
Financing Receivable, Modifications and Other Loss Mitigation Activities
Number of Loans, Modifications, Subsequent Default	506	604	1,464	1,778
Post-TDR Recorded Investment, Modifications, Subsequent Default | $	$ 109	$ 138	$ 337	$ 428
Single-family
Financing Receivable, Modifications and Other Loss Mitigation Activities
Number of Loans, Modifications, Subsequent Default	5,745	6,052	16,063	16,303
Post-TDR Recorded Investment, Modifications, Subsequent Default | $	$ 928	$ 1,091	$ 2,710	$ 3,002
Multifamily
Financing Receivable, Modifications and Other Loss Mitigation Activities
Number of Loans, Modifications, Subsequent Default	0	0	0	0
Post-TDR Recorded Investment, Modifications, Subsequent Default | $	$ 0	$ 0	$ 0	$ 0

Real Estate Owned (Details)

Real Estate Owned (Details) $ in Millions	9 Months Ended
	Sep. 30, 2015USD ($)numberofproperties	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)numberofproperties
Real Estate Acquired Through Foreclosure Data [Line Items]
Real estate owned, net	$ 1,795	$ 2,911	$ 2,558
REO acquired in non-cash transfer	1,600	$ 3,100
Single Family
Real Estate Acquired Through Foreclosure Data [Line Items]
Real estate owned, net	$ 1,800		$ 2,600
REO, number of properties | numberofproperties	17,780		25,768
Multifamily
Real Estate Acquired Through Foreclosure Data [Line Items]
Real estate owned, net	$ 8		$ 0

Real Estate Owned - REO (Detail

Real Estate Owned - REO (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
REO
Beginning balance - REO	$ 2,034	$ 3,696	$ 2,684	$ 4,602
Additions	524	815	1,769	3,293
Dispositions	(696)	(1,475)	(2,591)	(4,859)
Ending balance - REO	1,862	3,036	1,862	3,036
REO, valuation allowance
Beginning balance, valuation allowance	(56)	(19)	(126)	(51)
Change in valuation allowance	(11)	(106)	59	(74)
Ending balance, valuation allowance	(67)	(125)	(67)	(125)
Ending Balance - REO, net	$ 1,795	$ 2,911	$ 1,795	$ 2,911	$ 2,558

Investments in Securities (Deta

Investments in Securities (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)numberofsecuritiesnumberoflots	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)numberofsecuritiesnumberoflots	Sep. 30, 2014USD ($)
Investments, Debt and Equity Securities [Abstract]
Total Gross Unrealized Losses	$ 500		$ 500
Individual lots in gross unrealized loss position | numberoflots	332		332
Separate securities in gross unrealized loss position | numberofsecurities	299		299
Net unrealized gains (losses) on trading securities held at balance sheets date	$ (63)	$ (142)	$ (349)	$ (141)
Transfer to Investments			$ 0	$ 1,200

Investments in Securities - Ava

Investments in Securities - Available-For-Sale Securities (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	$ 77,991	$ 102,633
Gross Unrealized Gains	4,131	4,861
Available-for-sale, at fair value	81,573	106,550
Freddie Mac
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	34,130	37,710
Gross Unrealized Gains	1,480	1,435
Available-for-sale, at fair value	35,577	39,099
Fannie Mae
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	7,544	10,860
Gross Unrealized Gains	313	463
Available-for-sale, at fair value	7,836	11,313
Ginnie Mae
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	159	183
Gross Unrealized Gains	14	16
Available-for-sale, at fair value	173	199
CMBS
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13,907	20,988
Gross Unrealized Gains	669	890
Available-for-sale, at fair value	14,576	21,822
Subprime
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	13,501	20,210
Gross Unrealized Gains	702	989
Available-for-sale, at fair value	13,809	20,589
Option ARM
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,630	5,460
Gross Unrealized Gains	326	372
Available-for-sale, at fair value	3,882	5,649
Alt-A and other
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	3,158	4,500
Gross Unrealized Gains	513	578
Available-for-sale, at fair value	3,646	5,043
Obligations of states and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	1,458	2,166
Gross Unrealized Gains	23	34
Available-for-sale, at fair value	1,480	2,198
Manufactured housing
Schedule of Available-for-sale Securities [Line Items]
Amortized Cost	504	556
Gross Unrealized Gains	91	84
Available-for-sale, at fair value	594	638
Other-than-temporary impairment
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(410)	(730)
Other-than-temporary impairment | Freddie Mac
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	0	0
Other-than-temporary impairment | Fannie Mae
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	0	0
Other-than-temporary impairment | Ginnie Mae
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	0	0
Other-than-temporary impairment | CMBS
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	0	(2)
Other-than-temporary impairment | Subprime
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(321)	(518)
Other-than-temporary impairment | Option ARM
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(68)	(179)
Other-than-temporary impairment | Alt-A and other
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(20)	(29)
Other-than-temporary impairment | Obligations of states and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	0	0
Other-than-temporary impairment | Manufactured housing
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(1)	(2)
Temporary impairment
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(139)	(214)
Temporary impairment | Freddie Mac
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(33)	(46)
Temporary impairment | Fannie Mae
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(21)	(10)
Temporary impairment | Ginnie Mae
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	0	0
Temporary impairment | CMBS
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	0	(54)
Temporary impairment | Subprime
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(73)	(92)
Temporary impairment | Option ARM
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(6)	(4)
Temporary impairment | Alt-A and other
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(5)	(6)
Temporary impairment | Obligations of states and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	(1)	(2)
Temporary impairment | Manufactured housing
Schedule of Available-for-sale Securities [Line Items]
Gross Unrealized Losses	$ 0	$ 0

Investments in Securities - A62

Investments in Securities - Available-For-Sale Securities in a Gross Unrealized Loss Position (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	$ 8,157	$ 6,112
12 Months or Greater Fair Value	7,436	10,655
Less than 12 Months Gross Unrealized Losses	(53)	(36)
12 Months or Greater Gross Unrealized Losses	(496)	(908)
Freddie Mac
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	2,547	2,531
12 Months or Greater Fair Value	1,188	936
Less than 12 Months Gross Unrealized Losses	(8)	(14)
12 Months or Greater Gross Unrealized Losses	(25)	(32)
Fannie Mae
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	3,183	2,693
12 Months or Greater Fair Value	335	5
Less than 12 Months Gross Unrealized Losses	(19)	(9)
12 Months or Greater Gross Unrealized Losses	(2)	(1)
Ginnie Mae
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	0	66
12 Months or Greater Fair Value	58	0
Less than 12 Months Gross Unrealized Losses	0	0
12 Months or Greater Gross Unrealized Losses	0	0
CMBS
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	175	184
12 Months or Greater Fair Value	152	1,149
Less than 12 Months Gross Unrealized Losses	0	(5)
12 Months or Greater Gross Unrealized Losses	0	(51)
Subprime
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	1,767	286
12 Months or Greater Fair Value	4,607	6,533
Less than 12 Months Gross Unrealized Losses	(18)	(3)
12 Months or Greater Gross Unrealized Losses	(376)	(607)
Option ARM
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	348	77
12 Months or Greater Fair Value	691	1,490
Less than 12 Months Gross Unrealized Losses	(7)	0
12 Months or Greater Gross Unrealized Losses	(67)	(183)
Alt-A and other
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	128	185
12 Months or Greater Fair Value	379	499
Less than 12 Months Gross Unrealized Losses	(1)	(5)
12 Months or Greater Gross Unrealized Losses	(24)	(30)
Obligations of states and political subdivisions
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	9	48
12 Months or Greater Fair Value	12	28
Less than 12 Months Gross Unrealized Losses	0	0
12 Months or Greater Gross Unrealized Losses	(1)	(2)
Manufactured housing
Schedule of Available-for-sale Securities [Line Items]
Less than 12 Months Fair Value	0	42
12 Months or Greater Fair Value	14	15
Less than 12 Months Gross Unrealized Losses	0	0
12 Months or Greater Gross Unrealized Losses	$ (1)	$ (2)

Investments in Securities - Sig

Investments in Securities - Significant Modeled Attributes for Certain Available-For-Sale Non-Agency Mortgage-Related Securities (Details) $ in Millions	Sep. 30, 2015USD ($)
Subprime
Schedule of Available-for-sale Securities [Line Items]
UPB	$ 18,539
Weighted average collateral defaults	44.00%
Weighted average collateral severities	65.00%
Weighted average voluntary prepayment rates	3.00%
Average credit enhancement	7.00%
Option ARM
Schedule of Available-for-sale Securities [Line Items]
UPB	$ 5,604
Weighted average collateral defaults	28.00%
Weighted average collateral severities	62.00%
Weighted average voluntary prepayment rates	9.00%
Average credit enhancement	(1.00%)
Alt-A
Schedule of Available-for-sale Securities [Line Items]
UPB	$ 3,066
Weighted average collateral defaults	23.00%
Weighted average collateral severities	48.00%
Weighted average voluntary prepayment rates	10.00%
Average credit enhancement	1.00%

Investments in Securities - Net

Investments in Securities - Net Impairment of Available-For-Sale Securities Recognized in Earnings (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Schedule of Available-for-sale Securities [Line Items]
Net impairment of available-for-sale securities recognized in earnings	$ (54)	$ (166)	$ (245)	$ (687)
Net impairment charge in earnings due to change from intent to keep to sell	38	132	203	598
CMBS
Schedule of Available-for-sale Securities [Line Items]
Net impairment of available-for-sale securities recognized in earnings	0	0	(29)	0
Subprime
Schedule of Available-for-sale Securities [Line Items]
Net impairment of available-for-sale securities recognized in earnings	(34)	(125)	(123)	(582)
Option ARM
Schedule of Available-for-sale Securities [Line Items]
Net impairment of available-for-sale securities recognized in earnings	(19)	(39)	(88)	(72)
Alt-A and other
Schedule of Available-for-sale Securities [Line Items]
Net impairment of available-for-sale securities recognized in earnings	$ (1)	$ (2)	$ (5)	$ (33)

Investments in Securities - Oth

Investments in Securities - Other-Than-Temporary Impairments Related to Credit Losses on Available-For-Sale Securities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Credit-related other-than-temporary impairments on available-for-sale securities recognized in earnings:
Beginning balance - remaining credit losses on available-for-sale securities where other-than-temporary impairments were recognized in earnings	$ 5,679	$ 11,118	$ 6,798	$ 14,463
Amounts related to credit losses for which an other-than-temporary impairment was previously recognized	16	34	42	89
Amounts related to securities which were sold, written off or matured	(21)	(807)	(108)	(1,141)
Amounts for which we intend to sell the security or it is more likely than not that we will be required to sell the security before recovery of its amortized cost basis	(60)	(1,949)	(951)	(4,736)
Amounts related to amortization resulting from significant increases in cash flows expected to be collected and/or due to the passage of time that are recognized over the remaining life of the security	(79)	(110)	(246)	(389)
Ending balance - remaining credit losses on available-for-sale securities where other-than-temporary impairments were recognized in earnings	$ 5,535	$ 8,286	$ 5,535	$ 8,286

Investments in Securities - Gro

Investments in Securities - Gross Realized Gains and Gross Realized Losses on Sales of Available-For-Sale Securities (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Investments, Debt and Equity Securities [Abstract]
Gross realized gains	$ 324	$ 273	$ 1,177	$ 1,394
Gross realized losses	(12)	(166)	(23)	(182)
Net realized gains (losses)	$ 312	$ 107	$ 1,154	$ 1,212

Investments in Securities - Con

Investments in Securities - Contractual Maturities of Available-For-Sale Securities (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Amortized Cost
Due within 1 year or less	$ 4
Due after 1 through 5 years	466
Due after 5 through 10 years	917
Due after 10 years	76,604
Amortized Cost	77,991	$ 102,633
Fair Value
Due within 1 year or less	4
Due after 1 through 5 years	478
Due after 5 through 10 years	939
Due after 10 years	80,152
Fair Value	81,573	106,550
Freddie Mac
Amortized Cost
Due within 1 year or less	0
Due after 1 through 5 years	79
Due after 5 through 10 years	730
Due after 10 years	33,321
Amortized Cost	34,130	37,710
Fair Value
Due within 1 year or less	0
Due after 1 through 5 years	79
Due after 5 through 10 years	731
Due after 10 years	34,767
Fair Value	35,577	39,099
Fannie Mae
Amortized Cost
Due within 1 year or less	3
Due after 1 through 5 years	19
Due after 5 through 10 years	80
Due after 10 years	7,442
Amortized Cost	7,544	10,860
Fair Value
Due within 1 year or less	3
Due after 1 through 5 years	20
Due after 5 through 10 years	90
Due after 10 years	7,723
Fair Value	7,836	11,313
Ginnie Mae
Amortized Cost
Due within 1 year or less	0
Due after 1 through 5 years	2
Due after 5 through 10 years	20
Due after 10 years	137
Amortized Cost	159	183
Fair Value
Due within 1 year or less	0
Due after 1 through 5 years	2
Due after 5 through 10 years	24
Due after 10 years	147
Fair Value	173	199
CMBS
Amortized Cost
Due within 1 year or less	0
Due after 1 through 5 years	315
Due after 5 through 10 years	8
Due after 10 years	13,584
Amortized Cost	13,907	20,988
Fair Value
Due within 1 year or less	0
Due after 1 through 5 years	325
Due after 5 through 10 years	8
Due after 10 years	14,243
Fair Value	14,576	21,822
Subprime
Amortized Cost
Due within 1 year or less	0
Due after 1 through 5 years	0
Due after 5 through 10 years	0
Due after 10 years	13,501
Amortized Cost	13,501	20,210
Fair Value
Due within 1 year or less	0
Due after 1 through 5 years	0
Due after 5 through 10 years	0
Due after 10 years	13,809
Fair Value	13,809	20,589
Option ARM
Amortized Cost
Due within 1 year or less	0
Due after 1 through 5 years	0
Due after 5 through 10 years	0
Due after 10 years	3,630
Amortized Cost	3,630	5,460
Fair Value
Due within 1 year or less	0
Due after 1 through 5 years	0
Due after 5 through 10 years	0
Due after 10 years	3,882
Fair Value	3,882	5,649
Alt-A and other
Amortized Cost
Due within 1 year or less	1
Due after 1 through 5 years	16
Due after 5 through 10 years	7
Due after 10 years	3,134
Amortized Cost	3,158	4,500
Fair Value
Due within 1 year or less	1
Due after 1 through 5 years	16
Due after 5 through 10 years	8
Due after 10 years	3,621
Fair Value	3,646	5,043
Obligations of states and political subdivisions
Amortized Cost
Due within 1 year or less	0
Due after 1 through 5 years	34
Due after 5 through 10 years	65
Due after 10 years	1,359
Amortized Cost	1,458	2,166
Fair Value
Due within 1 year or less	0
Due after 1 through 5 years	36
Due after 5 through 10 years	68
Due after 10 years	1,376
Fair Value	1,480	2,198
Manufactured housing
Amortized Cost
Due within 1 year or less	0
Due after 1 through 5 years	1
Due after 5 through 10 years	7
Due after 10 years	496
Amortized Cost	504	556
Fair Value
Due within 1 year or less	0
Due after 1 through 5 years	0
Due after 5 through 10 years	10
Due after 10 years	584
Fair Value	$ 594	$ 638

Investments in Securities - Tra

Investments in Securities - Trading Securities (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Trading Securities [Line Items]
Total fair value of trading securities	$ 35,806	$ 30,437
Mortage-related securities
Trading Securities [Line Items]
Total fair value of trading securities	23,648	23,755
Freddie Mac
Trading Securities [Line Items]
Total fair value of trading securities	16,324	17,469
Fannie Mae
Trading Securities [Line Items]
Total fair value of trading securities	6,887	6,099
Ginnie Mae
Trading Securities [Line Items]
Total fair value of trading securities	290	16
Other
Trading Securities [Line Items]
Total fair value of trading securities	147	171
U.S. Treasury securities
Trading Securities [Line Items]
Total fair value of trading securities	$ 12,158	$ 6,682

Debt Securities and Subordina69

Debt Securities and Subordinated Borrowings (Details) - USD ($)	Sep. 30, 2015	Dec. 31, 2014
Other Debt [Line Items]
Debt limit as percentage of mortgage assets	120.00%
Debt cap under Purchase Agreement for the current year	$ 563,600,000,000
Debt cap under Purchase Agreement for the following year	479,000,000,000
Federal funds purchased and securities sold under agreements to repurchase	0	$ 0
Freddie Mac parent
Other Debt [Line Items]
Aggregate indebtedness as the par value of other debt	$ 411,805,000,000	$ 454,029,000,000

Debt Securities and Subordina70

Debt Securities and Subordinated Borrowings - Other Debt (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Long-term Debt [Abstract}
Total debt, net	$ 1,947,389	$ 1,929,542
Long-term Debt, Fair Value	7,379	5,820
Balance Net Of Callable Other Long Term Debt	101,100	106,300
Freddie Mac parent
Short-term Debt [Abstract]
Par Value	112,329	134,670
Carrying Amount	$ 112,280	$ 134,619
Weighted Average Effective Rate	0.18%	0.12%
Long-term Debt [Abstract}
Par Value	$ 299,476	$ 319,359
Carrying Amount	$ 296,001	$ 315,450
Weighted Average Interest Rate	2.05%	2.02%
Total par value	$ 411,805	$ 454,029
Total debt, net	408,281	450,069
Freddie Mac parent | 2015
Long-term Debt [Abstract}
Par Value	13,026	58,841
Carrying Amount	$ 13,025	$ 58,830
Weighted Average Interest Rate	1.73%	1.62%
Freddie Mac parent | 2016
Long-term Debt [Abstract}
Par Value	$ 59,500	$ 72,504
Carrying Amount	$ 59,599	$ 72,696
Weighted Average Interest Rate	2.11%	1.88%
Freddie Mac parent | 2017
Long-term Debt [Abstract}
Par Value	$ 83,610	$ 77,482
Carrying Amount	$ 83,756	$ 77,489
Weighted Average Interest Rate	1.58%	1.78%
Freddie Mac parent | 2018
Long-term Debt [Abstract}
Par Value	$ 46,224	$ 30,850
Carrying Amount	$ 46,250	$ 30,823
Weighted Average Interest Rate	1.53%	1.67%
Freddie Mac parent | 2019
Long-term Debt [Abstract}
Par Value	$ 28,615	$ 30,671
Carrying Amount	$ 28,540	$ 30,570
Weighted Average Interest Rate	1.88%	1.97%
Freddie Mac parent | Thereafter
Long-term Debt [Abstract}
Par Value	$ 68,501	$ 49,011
Carrying Amount	$ 64,831	$ 45,042
Weighted Average Interest Rate	3.11%	3.42%
Freddie Mac parent | Reference Bills securites and other discount notes
Short-term Debt [Abstract]
Par Value	$ 104,484	$ 134,670
Carrying Amount	$ 104,435	$ 134,619
Weighted Average Effective Rate	0.18%	0.12%
Freddie Mac parent | Medium-term notes
Short-term Debt [Abstract]
Par Value	$ 7,845	$ 0
Carrying Amount	$ 7,845	$ 0
Weighted Average Effective Rate	0.17%	0.00%

Debt Securities and Subordina71

Debt Securities and Subordinated Borrowings - Debt Securities of Consolidated Trusts Held by Third Parties (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Debt Securities Of Consolidated Trusts Held By Third Parties [Line Items]
Balance, Net	$ 1,947,389	$ 1,929,542
Variable Interest Entity Primary Beneficiary
Debt Securities Of Consolidated Trusts Held By Third Parties [Line Items]
UPB	1,496,892	1,440,325
Balance, Net	$ 1,539,108	$ 1,479,473
Effective rate for debt securities of consolidated trusts held by third parties	3.01%	3.19%
Variable Interest Entity Primary Beneficiary | Single-family
Debt Securities Of Consolidated Trusts Held By Third Parties [Line Items]
UPB	$ 1,495,155	$ 1,439,801
Balance, Net	1,537,221	1,478,896
Variable Interest Entity Primary Beneficiary | Multifamily
Debt Securities Of Consolidated Trusts Held By Third Parties [Line Items]
UPB	1,737	524
Balance, Net	$ 1,887	$ 577
Weighted Average Coupon	4.78%	4.93%
Variable Interest Entity Primary Beneficiary | Single-family 30-year or more, fixed-rate | Single-family
Debt Securities Of Consolidated Trusts Held By Third Parties [Line Items]
UPB	$ 1,071,730	$ 1,018,357
Balance, Net	$ 1,103,502	$ 1,047,302
Weighted Average Coupon	3.91%	4.04%
Variable Interest Entity Primary Beneficiary | Single-family 20-year fixed-rate | Single-family
Debt Securities Of Consolidated Trusts Held By Third Parties [Line Items]
UPB	$ 73,369	$ 71,545
Balance, Net	$ 75,611	$ 73,764
Weighted Average Coupon	3.63%	3.74%
Variable Interest Entity Primary Beneficiary | Single-family 15-year fixed-rate | Single-family
Debt Securities Of Consolidated Trusts Held By Third Parties [Line Items]
UPB	$ 271,722	$ 266,117
Balance, Net	$ 278,285	$ 272,538
Weighted Average Coupon	3.03%	3.13%
Variable Interest Entity Primary Beneficiary | Single-family Adjustable-rate | Single-family
Debt Securities Of Consolidated Trusts Held By Third Parties [Line Items]
UPB	$ 62,327	$ 65,082
Balance, Net	$ 63,735	$ 66,518
Weighted Average Coupon	2.60%	2.62%
Variable Interest Entity Primary Beneficiary | Single-family Interest-only | Single-family
Debt Securities Of Consolidated Trusts Held By Third Parties [Line Items]
UPB	$ 14,967	$ 17,474
Balance, Net	$ 15,028	$ 17,524
Weighted Average Coupon	3.16%	3.29%
Variable Interest Entity Primary Beneficiary | FHA/VA | Single-family
Debt Securities Of Consolidated Trusts Held By Third Parties [Line Items]
UPB	$ 1,040	$ 1,226
Balance, Net	$ 1,060	$ 1,250
Weighted Average Coupon	5.39%	5.42%

Derivatives (Details)

Derivatives (Details)	9 Months Ended
	Sep. 30, 2015USD ($)category	Dec. 31, 2014USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
Number of derivative categories | category	3
Derivatives in Hedge Accounting Relationships	$ 0	$ 0

Derivatives - Derivative Assets

Derivatives - Derivative Assets and Liabilities at Fair Value (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Derivative [Line Items]
Netting adjustments to derivative assets	$ (10,809)	$ (9,939)
Derivative assets, net	605	822
Netting adjustments to derivative liabilities	14,965	13,097
Derivative liabilities, net	(1,670)	(1,963)
Net cash collateral posted	4,200	3,200
Derivatives
Derivative [Line Items]
Net cash collateral posted	4,200	3,200
Not Designated as Hedging Instrument
Derivative [Line Items]
Notional or contractual amount	643,697	607,040
Derivative assets at fair value	10,592	9,944
Derivative interest receivable	822	817
Netting adjustments to derivative assets	(10,809)	(9,939)
Derivative assets, net	605	822
Derivative liabilities at fair value	(15,206)	(13,560)
Derivative interest payable	(1,429)	(1,500)
Netting adjustments to derivative liabilities	14,965	13,097
Derivative liabilities, net	(1,670)	(1,963)
Not Designated as Hedging Instrument | Interest Rate Swaps
Derivative [Line Items]
Notional or contractual amount	423,842	418,844
Derivative assets at fair value	5,629	5,653
Derivative liabilities at fair value	(14,850)	(13,316)
Not Designated as Hedging Instrument | Receive-fixed
Derivative [Line Items]
Notional or contractual amount	210,020	205,219
Derivative assets at fair value	5,605	5,243
Derivative liabilities at fair value	(21)	(487)
Not Designated as Hedging Instrument | Pay-fixed
Derivative [Line Items]
Notional or contractual amount	213,522	213,325
Derivative assets at fair value	22	408
Derivative liabilities at fair value	(14,829)	(12,829)
Not Designated as Hedging Instrument | Basis (floating to floating)
Derivative [Line Items]
Notional or contractual amount	300	300
Derivative assets at fair value	2	2
Derivative liabilities at fair value	0	0
Not Designated as Hedging Instrument | Option-based
Derivative [Line Items]
Notional or contractual amount	93,435	112,468
Derivative assets at fair value	4,841	4,224
Derivative liabilities at fair value	(143)	(127)
Not Designated as Hedging Instrument | Call swaptions | Purchased
Derivative [Line Items]
Notional or contractual amount	50,375	56,390
Derivative assets at fair value	3,693	3,315
Derivative liabilities at fair value	0	0
Not Designated as Hedging Instrument | Call swaptions | Written
Derivative [Line Items]
Notional or contractual amount	3,875	10,660
Derivative assets at fair value	0	0
Derivative liabilities at fair value	(130)	(90)
Not Designated as Hedging Instrument | Put swaptions | Purchased
Derivative [Line Items]
Notional or contractual amount	17,800	22,125
Derivative assets at fair value	335	179
Derivative liabilities at fair value	0	0
Not Designated as Hedging Instrument | Put swaptions | Written
Derivative [Line Items]
Notional or contractual amount	8,775	3,560
Derivative assets at fair value	0	0
Derivative liabilities at fair value	(13)	(9)
Not Designated as Hedging Instrument | Other option-based derivatives
Derivative [Line Items]
Notional or contractual amount	12,610	19,733
Derivative assets at fair value	813	730
Derivative liabilities at fair value	0	(28)
Not Designated as Hedging Instrument | Futures
Derivative [Line Items]
Notional or contractual amount	65,000	40,263
Derivative assets at fair value	0	0
Derivative liabilities at fair value	0	0
Not Designated as Hedging Instrument | Commitments
Derivative [Line Items]
Notional or contractual amount	53,625	27,054
Derivative assets at fair value	103	40
Derivative liabilities at fair value	(178)	(79)
Not Designated as Hedging Instrument | Credit derivatives
Derivative [Line Items]
Notional or contractual amount	4,714	5,207
Derivative assets at fair value	19	27
Derivative liabilities at fair value	(10)	(11)
Not Designated as Hedging Instrument | Swap guarantee derivatives
Derivative [Line Items]
Notional or contractual amount	3,081	3,204
Derivative assets at fair value	0	0
Derivative liabilities at fair value	$ (25)	$ (27)

Derivatives - Gains and Losses

Derivatives - Gains and Losses on Derivatives (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	$ (4,172)	$ (617)	$ (3,440)	$ (4,894)
Not Designated as Hedging Instrument
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(4,172)	(617)	(3,440)	(4,894)
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(3,636)	10	(1,801)	(2,920)
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Interest Rate Swaps
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(4,693)	(184)	(2,514)	(3,505)
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Receive-fixed
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	1,845	(751)	1,563	2,300
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Pay-fixed
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(6,538)	568	(4,076)	(5,804)
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Basis (floating to floating)
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	0	(1)	(1)	(1)
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Option-based
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	1,171	78	722	344
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Call swaptions | Purchased
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	1,293	99	795	1,172
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Call swaptions | Written
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(49)	7	(40)	(145)
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Put swaptions | Purchased
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(259)	(41)	(194)	(817)
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Put swaptions | Written
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	47	0	70	0
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Other option-based derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	139	13	91	134
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Futures
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(2)	(3)	(13)	(43)
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Commitments
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(114)	100	40	296
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Credit derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	2	19	(36)	(9)
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Swap guarantee derivatives
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	1	1	5	6
Not Designated as Hedging Instrument | Derivative gains (losses) excluding accrual of periodic settlements | Other
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(1)	(1)	(5)	(9)
Not Designated as Hedging Instrument | Accrual of periodic settlements
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(536)	(627)	(1,639)	(1,974)
Not Designated as Hedging Instrument | Accrual of periodic settlements | Receive-fixed
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	647	726	1,948	2,343
Not Designated as Hedging Instrument | Accrual of periodic settlements | Pay-fixed
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	(1,183)	(1,354)	(3,588)	(4,319)
Not Designated as Hedging Instrument | Accrual of periodic settlements | Other
Derivative Instruments, Gain (Loss) [Line Items]
Derivative gains (losses)	$ 0	$ 1	$ 1	$ 2

Collateral and Offsetting of 75

Collateral and Offsetting of Assets and Liabilities (Details)	9 Months Ended
	Sep. 30, 2015USD ($)numberofcounterparties	Dec. 31, 2014USD ($)
Offsetting of Financial Assets and Liabilities [Line Items]
Derivative collateral, obligation to return cash	$ 0	$ 0
Derivative collateral, right to reclaim cash	0	0
Net uncollateralized exposure after applying netting agreements and collateral	317,000,000	369,000,000
Securities collateral pledged to Freddie Mac offsetting our exposure	288,000,000	453,000,000
Federal funds sold	0	0
Derivatives in a net liability position	2,400,000,000
Collateral already posted, aggregate fair value	2,400,000,000
Securities pledged with the ability for the secured party to repledge	4,287,000,000	4,432,000,000
Collateral pledged by Freddie Mac in form of cash	5,700,000,000	5,400,000,000
Securities purchased under agreements to resell
Offsetting of Financial Assets and Liabilities [Line Items]
Collateral pledged to Freddie Mac in form of securities	176,000,000	0
Derivatives and securities
Offsetting of Financial Assets and Liabilities [Line Items]
Collateral pledged by Freddie Mac in form of cash	4,700,000,000	4,200,000,000
OTC derivatives
Offsetting of Financial Assets and Liabilities [Line Items]
Net uncollateralized exposure after applying netting agreements and collateral	41,000,000	174,000,000
Maximum loss after applying netting agreements and collateral	41,000,000
Collateral pledged to Freddie Mac in form of cash	1,200,000,000	2,100,000,000
Securities collateral pledged to Freddie Mac offsetting our exposure	288,000,000	453,000,000
Derivatives in a net liability position	2,400,000,000	3,000,000,000
Collateral pledged by Freddie Mac in form of cash	$ 1,000,000,000	1,200,000,000
OTC derivatives | Counterparties accounted for 10% or more | Net uncollateralized exposure to derivative counterparties
Offsetting of Financial Assets and Liabilities [Line Items]
Number of counterparties | numberofcounterparties	3
Concentration risk percentage	88.00%
OTC derivatives | Counterparties accounted for 10% or more | Net uncollateralized exposure to derivative counterparties | S&P Equivalent A Minus Or Above Rating [Member]
Offsetting of Financial Assets and Liabilities [Line Items]
Number of counterparties | numberofcounterparties	3
Cleared and exchange-traded derivatives
Offsetting of Financial Assets and Liabilities [Line Items]
Net uncollateralized exposure after applying netting agreements and collateral	$ 154,000,000	128,000,000
Collateral pledged to Freddie Mac in form of cash	1,000,000	0
Securities collateral pledged to Freddie Mac offsetting our exposure	$ 0	$ 0

Collateral and Offsetting of 76

Collateral and Offsetting of Assets and Liabilities - Offsetting of Financial Assets and Liabilities (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Derivative Assets:
Gross Amount Recognized	$ 11,414	$ 10,761
Amount Offset in the Consolidated Balance Sheets	(10,809)	(9,939)
Net Amount Presented in the Consolidated Balance Sheets	605	822
Gross Amount Not Offset in the Consolidated Balance Sheets	(288)	(453)
Net Amount	317	369
Securities purchased under agreements to resell:
Gross Amount Recognized	38,738	51,903
Amount Offset in the Consolidated Balance Sheets	0	0
Net Amount Presented in the Consolidated Balance Sheets	38,738	51,903
Gross Amount Not Offset in the Consolidated Balance Sheets	(38,738)	(51,903)
Net Amount	0	0
Total:
Gross Amount Recognized	50,152	62,664
Amount Offset in the Consolidated Balance Sheets	(10,809)	(9,939)
Net Amount Presented in the Consolidated Balance Sheets	39,343	52,725
Gross Amount Not Offset in the Consolidated Balance Sheets	(39,026)	(52,356)
Net Amount	317	369
Derivative Liabilities:
Gross Amount Recognized	(16,635)	(15,060)
Amount Offset in the Consolidated Balance Sheets	14,965	13,097
Net Amount Presented in the Consolidated Balance Sheets	(1,670)	(1,963)
Gross Amount Not Offset in the Consolidated Balance Sheets	1,411	1,743
Net Amount	(259)	(220)
Over-the-counter interest-rate and foreign-currency swaps, and option-based derivatives
Derivative Assets:
Gross Amount Recognized	9,390	10,315
Amount Offset in the Consolidated Balance Sheets	(9,061)	(9,688)
Net Amount Presented in the Consolidated Balance Sheets	329	627
Gross Amount Not Offset in the Consolidated Balance Sheets	(288)	(453)
Net Amount	41	174
Derivative Liabilities:
Gross Amount Recognized	(10,254)	(10,666)
Amount Offset in the Consolidated Balance Sheets	8,798	8,845
Net Amount Presented in the Consolidated Balance Sheets	(1,456)	(1,821)
Gross Amount Not Offset in the Consolidated Balance Sheets	1,411	1,743
Net Amount	(45)	(78)
Cleared and exchange-traded derivatives
Derivative Assets:
Gross Amount Recognized	1,902	379
Amount Offset in the Consolidated Balance Sheets	(1,748)	(251)
Net Amount Presented in the Consolidated Balance Sheets	154	128
Gross Amount Not Offset in the Consolidated Balance Sheets	0	0
Net Amount	154	128
Derivative Liabilities:
Gross Amount Recognized	(6,168)	(4,277)
Amount Offset in the Consolidated Balance Sheets	6,167	4,252
Net Amount Presented in the Consolidated Balance Sheets	(1)	(25)
Gross Amount Not Offset in the Consolidated Balance Sheets	0	0
Net Amount	(1)	(25)
Aggregate fair value of securities posted	2,800	2,300
Other
Derivative Assets:
Gross Amount Recognized	122	67
Amount Offset in the Consolidated Balance Sheets	0	0
Net Amount Presented in the Consolidated Balance Sheets	122	67
Gross Amount Not Offset in the Consolidated Balance Sheets	0	0
Net Amount	122	67
Derivative Liabilities:
Gross Amount Recognized	(213)	(117)
Amount Offset in the Consolidated Balance Sheets	0	0
Net Amount Presented in the Consolidated Balance Sheets	(213)	(117)
Gross Amount Not Offset in the Consolidated Balance Sheets	0	0
Net Amount	$ (213)	$ (117)

Collateral and Offsetting of 77

Collateral and Offsetting of Assets and Liabilities - Collateral in the Form of Securities Pledged (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Collateral in the Form of Securities Pledged [Line Items]
Securities pledged with the ability for the secured party to repledge	$ 4,287	$ 4,432
Debt securities of consolidated trusts held by third parties
Collateral in the Form of Securities Pledged [Line Items]
Securities pledged with the ability for the secured party to repledge	1,832	2,539
Available-for-sale securities
Collateral in the Form of Securities Pledged [Line Items]
Securities pledged with the ability for the secured party to repledge	0	9
Trading securities
Collateral in the Form of Securities Pledged [Line Items]
Securities pledged with the ability for the secured party to repledge	$ 2,455	$ 1,884

Stockholders' Equity (Deficit)

Stockholders' Equity (Deficit) (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014	Dec. 31, 2013
Stockholders' Equity Note [Abstract]
Federal statutory tax rate				35.00%	35.00%
Total AOCI related to derivatives designated as cash flow hedges	$ (671,000,000)			$ (671,000,000)	$ (800,000,000)	$ (803,000,000)
Cash flow hedge gain (loss) to be reclassified over the next 12 months	$ (146,000,000)
Maximum remaining length of time hedged in cash flow hedge	18 years
Cash dividends paid on senior preferred stock	$ 3,900,000,000	$ 700,000,000	$ 900,000,000	5,510,000,000	$ 16,824,000,000
Draw received from Treasury	0
Expected draw request from Treasury	0			0
Applicable capital reserve amount	1,800,000,000			1,800,000,000			$ 3,000,000,000
Applicable capital reserve amount for 2018	0			0
Expected Senior Preferred Stock Dividend Payable To Treasury	0			0
Aggregate liquidation preference on senior preferred stock	72,336,000,000			72,336,000,000		$ 72,336,000,000
Common shares or non-cumulative preferred stock repurchased	0			0
Common shares or non-cumulative preferred stock issued	$ 0			0
Common dividends declared				0
Dividends declared on preferred stock				0
Dividends paid on preferred stock				$ 0

Stockholders' Equity - Changes

Stockholders' Equity - Changes in AOCI by Component, Net of Tax (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			$ 1,730
Total other comprehensive income (loss), net of taxes and reclassification adjustments	$ (26)	$ 705	(60)	$ 1,712
Ending balance	1,670		1,670
Total
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			1,730	(6)
Other comprehensive income (loss) before reclassifications			400	1,904
Amounts reclassified from accumulated other comprehensive income			(460)	(192)
Total other comprehensive income (loss), net of taxes and reclassification adjustments			(60)	1,712
Ending balance	1,670	1,706	1,670	1,706
AOCI related to available-for-sale securities
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			2,546	962
Other comprehensive income (loss) before reclassifications			373	1,903
Amounts reclassified from accumulated other comprehensive income			(591)	(341)
Total other comprehensive income (loss), net of taxes and reclassification adjustments			(218)	1,562
Ending balance	2,328	2,524	2,328	2,524
Tax expense related to AFS - other comprehensive income before reclassifications			200	1,000
AOCI related to cash flow hedge relationships
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(803)	(1,000)
Other comprehensive income (loss) before reclassifications			0	0
Amounts reclassified from accumulated other comprehensive income			132	151
Total other comprehensive income (loss), net of taxes and reclassification adjustments			132	151
Ending balance	(671)	(849)	(671)	(849)
AOCI related to defined benefit plans
Accumulated Other Comprehensive Income (Loss) [Roll Forward]
Beginning balance			(13)	32
Other comprehensive income (loss) before reclassifications			27	1
Amounts reclassified from accumulated other comprehensive income			(1)	(2)
Total other comprehensive income (loss), net of taxes and reclassification adjustments			26	(1)
Ending balance	$ 13	$ 31	$ 13	$ 31

Stockholders' Equity - Reclassi

Stockholders' Equity - Reclassifications from AOCI to Net Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other gains (losses) on investment securities recognized in earnings	$ 256	$ (109)	$ 825	$ 1,029
Net impairment of available-for-sale securities recognized in earnings	(54)	(166)	(245)	(687)
Total interest expense	(12,963)	(13,484)	(38,679)	(41,416)
Expense related to derivatives	(53)	(75)	(176)	(230)
Salaries and employee benefits	(231)	(231)	(742)	(687)
Income before income tax (expense) benefit	(669)	3,037	6,197	10,837
Income tax benefit (expense)	194	(956)	(1,979)	(3,374)
Net income (loss)	(475)	2,081	4,218	7,463
Total reclassifications in the period
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Net income (loss)	135	(87)	460	192
AOCI related to available-for-sale securities | Total reclassifications in the period
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Other gains (losses) on investment securities recognized in earnings	312	107	1,154	1,212
Net impairment of available-for-sale securities recognized in earnings	(54)	(166)	(245)	(687)
Income before income tax (expense) benefit	258	(59)	909	525
Income tax benefit (expense)	(89)	21	(318)	(184)
Net income (loss)	169	(38)	591	341
AOCI related to cash flow hedge relationships | Total reclassifications in the period
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Expense related to derivatives	(53)	(75)	(176)	(230)
Income before income tax (expense) benefit	(53)	(76)	(177)	(232)
Income tax benefit (expense)	18	26	45	81
Net income (loss)	(35)	(50)	(132)	(151)
AOCI related to cash flow hedge relationships | Total reclassifications in the period | Freddie Mac parent
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Total interest expense	0	(1)	(1)	(2)
AOCI related to defined benefit plans | Total reclassifications in the period
Reclassification Adjustment Out Of Accumulated Other Comprehensive Income [Line Items]
Salaries and employee benefits	1	1	1	3
Income tax benefit (expense)	0	0	0	(1)
Net income (loss)	$ 1	$ 1	$ 1	$ 2

Income Taxes (Details)

Income Taxes (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Income Tax Disclosure [Abstract]
Income tax benefit (expense)	$ 194,000,000	$ (956,000,000)	$ (1,979,000,000)	$ (3,374,000,000)
Effective Tax Rate	29.00%	31.50%	31.90%	31.10%
Federal statutory tax rate			35.00%	35.00%
Deferred tax assets, net	$ 17,800,000,000		$ 17,800,000,000		$ 19,500,000,000
Unrecognized Tax Benefits	$ 0		$ 0

Segment Reporting (Details)

Segment Reporting (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015USD ($)	Sep. 30, 2014USD ($)	Sep. 30, 2015USD ($)numberofreportablesegments	Sep. 30, 2014USD ($)
Segment Reporting Information [Line Items]
Number of reportable segments | numberofreportablesegments			3
Other non-interest expense includes adjustments	$ 518	$ 241	$ 1,939	$ 762
Reclassifications [Member]
Segment Reporting Information [Line Items]
Other non-interest expense includes adjustments	248	$ 198	705	$ 563
Single-family Guarantee
Segment Reporting Information [Line Items]
Unamortized balance of buy down fees	200		200
Unamortized balance of delivery fees	600		600
Investments
Segment Reporting Information [Line Items]
Unamortized balance of cash premiums and discounts, net	3,800		3,800
Unamortized balance of buy up fees	$ 300		$ 300

Segment Reporting - Summary of

Segment Reporting - Summary of Segment Earnings and Comprehensive Income (Loss) (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting Information [Line Items]
Net income (loss)	$ (475)	$ 2,081	$ 4,218	$ 7,463
Comprehensive income (loss)	(501)	2,786	4,158	9,175
All Other
Segment Reporting Information [Line Items]
Net income (loss)	0	0	0	(13)
Comprehensive income (loss)	0	0	27	(13)
Operating segments and All Other
Segment Reporting Information [Line Items]
Net income (loss)	(475)	2,081	4,218	7,463
Comprehensive income (loss)	(501)	2,786	4,158	9,175
Single-family Guarantee | Operating segments
Segment Reporting Information [Line Items]
Net income (loss)	591	196	1,140	1,077
Comprehensive income (loss)	591	195	1,139	1,076
Investments | Operating segments
Segment Reporting Information [Line Items]
Net income (loss)	(963)	1,440	2,424	5,060
Comprehensive income (loss)	(1,008)	2,259	2,446	6,953
Multifamily | Operating segments
Segment Reporting Information [Line Items]
Net income (loss)	(103)	445	654	1,339
Comprehensive income (loss)	$ (84)	$ 332	$ 546	$ 1,159

Segment Reporting - Segment Ear

Segment Reporting - Segment Earnings and Reconciliation to GAAP Results (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Income (Expense), Net	$ 3,743	$ 3,663	$ 11,359	$ 10,676
Benefit (provision) for credit losses	528	(574)	1,884	(41)
Non-interest income (loss)
Management and guarantee income	90	84	269	244
Net impairment of available-for-sale securities recognized in earnings	(54)	(166)	(245)	(687)
Derivative gains (losses)	(4,172)	(617)	(3,440)	(4,894)
Gains (losses) on trading securities	(56)	(216)	(329)	(183)
Gains (losses) on mortgage loans	(197)	168	(1,321)	383
Other non-interest income (loss)	548	1,511	1,619	7,606
Non-interest expense
Administrative expenses	(465)	(472)	(1,417)	(1,393)
Real estate owned operations income (expense)	(116)	(103)	(243)	(112)
Other non-interest expense includes adjustments	(518)	(241)	(1,939)	(762)
Segment Adjustments	0	0	0	0
Income tax benefit (expense)	194	(956)	(1,979)	(3,374)
Net income (loss)	(475)	2,081	4,218	7,463
Changes in unrealized gains (losses) related to available-for-sale securities	(61)	656	(218)	1,562
Changes in unrealized gains (losses) related to cash flow hedge relationships	35	50	132	151
Changes in defined benefit plans	0	(1)	26	(1)
Total other comprehensive income (loss), net of taxes	(26)	705	(60)	1,712
Comprehensive income (loss)	(501)	2,786	4,158	9,175
All Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Income (Expense), Net	0	0	0	0
Benefit (provision) for credit losses	0	0	0	0
Non-interest income (loss)
Management and guarantee income	0	0	0	0
Net impairment of available-for-sale securities recognized in earnings	0	0	0	0
Derivative gains (losses)	0	0	0	0
Gains (losses) on trading securities	0	0	0	0
Gains (losses) on mortgage loans	0	0	0	0
Other non-interest income (loss)	0	0	0	0
Non-interest expense
Administrative expenses	0	0	0	0
Real estate owned operations income (expense)	0	0	0	0
Other non-interest expense includes adjustments	0	0	0	(18)
Segment Adjustments	0	0	0	0
Income tax benefit (expense)	0	0	0	5
Net income (loss)	0	0	0	(13)
Changes in unrealized gains (losses) related to available-for-sale securities	0	0	0	0
Changes in unrealized gains (losses) related to cash flow hedge relationships	0	0	0	0
Changes in defined benefit plans	0	0	27	0
Total other comprehensive income (loss), net of taxes	0	0	27	0
Comprehensive income (loss)	0	0	27	(13)
Operating segments and All Other
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Income (Expense), Net	594	1,021	2,091	3,002
Benefit (provision) for credit losses	360	(808)	1,355	(690)
Non-interest income (loss)
Management and guarantee income	1,432	1,208	4,305	3,387
Net impairment of available-for-sale securities recognized in earnings	112	37	300	(95)
Derivative gains (losses)	(3,450)	196	(1,250)	(2,247)
Gains (losses) on trading securities	(56)	(216)	(329)	(183)
Gains (losses) on mortgage loans	(197)	168	(1,321)	383
Other non-interest income (loss)	1,244	1,956	3,540	8,749
Non-interest expense
Administrative expenses	(465)	(472)	(1,417)	(1,393)
Real estate owned operations income (expense)	(116)	(103)	(243)	(112)
Other non-interest expense includes adjustments	(270)	(43)	(1,234)	(199)
Segment Adjustments	143	93	400	235
Income tax benefit (expense)	194	(956)	(1,979)	(3,374)
Net income (loss)	(475)	2,081	4,218	7,463
Changes in unrealized gains (losses) related to available-for-sale securities	(61)	656	(218)	1,562
Changes in unrealized gains (losses) related to cash flow hedge relationships	35	50	132	151
Changes in defined benefit plans	0	(1)	26	(1)
Total other comprehensive income (loss), net of taxes	(26)	705	(60)	1,712
Comprehensive income (loss)	(501)	2,786	4,158	9,175
Reconciling Items
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Income (Expense), Net	3,149	2,642	9,268	7,674
Benefit (provision) for credit losses	168	234	529	649
Non-interest income (loss)
Management and guarantee income	(1,342)	(1,124)	(4,036)	(3,143)
Net impairment of available-for-sale securities recognized in earnings	(166)	(203)	(545)	(592)
Derivative gains (losses)	(722)	(813)	(2,190)	(2,647)
Gains (losses) on trading securities	0	0	0	0
Gains (losses) on mortgage loans	0	0	0	0
Other non-interest income (loss)	(696)	(445)	(1,921)	(1,143)
Non-interest expense
Administrative expenses	0	0	0	0
Real estate owned operations income (expense)	0	0	0	0
Other non-interest expense includes adjustments	(248)	(198)	(705)	(563)
Segment Adjustments	(143)	(93)	(400)	(235)
Income tax benefit (expense)	0	0	0	0
Net income (loss)	0	0	0	0
Changes in unrealized gains (losses) related to available-for-sale securities	0	0	0	0
Changes in unrealized gains (losses) related to cash flow hedge relationships	0	0	0	0
Changes in defined benefit plans	0	0	0	0
Total other comprehensive income (loss), net of taxes	0	0	0	0
Comprehensive income (loss)	0	0	0	0
Reclassifications
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Income (Expense), Net	2,944	2,474	8,666	7,206
Benefit (provision) for credit losses	168	234	529	649
Non-interest income (loss)
Management and guarantee income	(1,280)	(1,049)	(3,834)	(2,910)
Net impairment of available-for-sale securities recognized in earnings	(166)	(203)	(545)	(592)
Derivative gains (losses)	(722)	(813)	(2,190)	(2,647)
Gains (losses) on trading securities	0	0	0	0
Gains (losses) on mortgage loans	0	0	0	0
Other non-interest income (loss)	(696)	(445)	(1,921)	(1,143)
Non-interest expense
Administrative expenses	0	0	0	0
Real estate owned operations income (expense)	0	0	0	0
Other non-interest expense includes adjustments	(248)	(198)	(705)	(563)
Segment Adjustments	0	0	0	0
Income tax benefit (expense)	0	0	0	0
Net income (loss)	0	0	0	0
Changes in unrealized gains (losses) related to available-for-sale securities	0	0	0	0
Changes in unrealized gains (losses) related to cash flow hedge relationships	0	0	0	0
Changes in defined benefit plans	0	0	0	0
Total other comprehensive income (loss), net of taxes	0	0	0	0
Comprehensive income (loss)	0	0	0	0
Segment Adjustments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Income (Expense), Net	205	168	602	468
Benefit (provision) for credit losses	0	0	0	0
Non-interest income (loss)
Management and guarantee income	(62)	(75)	(202)	(233)
Net impairment of available-for-sale securities recognized in earnings	0	0	0	0
Derivative gains (losses)	0	0	0	0
Gains (losses) on trading securities	0	0	0	0
Gains (losses) on mortgage loans	0	0	0	0
Other non-interest income (loss)	0	0	0	0
Non-interest expense
Administrative expenses	0	0	0	0
Real estate owned operations income (expense)	0	0	0	0
Other non-interest expense includes adjustments	0	0	0	0
Segment Adjustments	(143)	(93)	(400)	(235)
Income tax benefit (expense)	0	0	0	0
Net income (loss)	0	0	0	0
Changes in unrealized gains (losses) related to available-for-sale securities	0	0	0	0
Changes in unrealized gains (losses) related to cash flow hedge relationships	0	0	0	0
Changes in defined benefit plans	0	0	0	0
Total other comprehensive income (loss), net of taxes	0	0	0	0
Comprehensive income (loss)	0	0	0	0
Single-family Guarantee | Operating segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Income (Expense), Net	52	19	(59)	(27)
Benefit (provision) for credit losses	360	(818)	1,335	(742)
Non-interest income (loss)
Management and guarantee income	1,345	1,143	4,066	3,201
Net impairment of available-for-sale securities recognized in earnings	0	0	0	0
Derivative gains (losses)	2	19	(36)	(9)
Gains (losses) on trading securities	0	0	0	0
Gains (losses) on mortgage loans	(319)	52	(1,537)	(143)
Other non-interest income (loss)	175	351	485	602
Non-interest expense
Administrative expenses	(309)	(302)	(938)	(855)
Real estate owned operations income (expense)	(116)	(109)	(243)	(120)
Other non-interest expense includes adjustments	(257)	(40)	(1,196)	(159)
Segment Adjustments	(62)	(75)	(202)	(233)
Income tax benefit (expense)	(280)	(44)	(535)	(438)
Net income (loss)	591	196	1,140	1,077
Changes in unrealized gains (losses) related to available-for-sale securities	0	0	0	0
Changes in unrealized gains (losses) related to cash flow hedge relationships	0	0	0	0
Changes in defined benefit plans	0	(1)	(1)	(1)
Total other comprehensive income (loss), net of taxes	0	(1)	(1)	(1)
Comprehensive income (loss)	591	195	1,139	1,076
Investments | Operating segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Income (Expense), Net	394	762	1,479	2,324
Benefit (provision) for credit losses	0	0	0	0
Non-interest income (loss)
Management and guarantee income	0	0	0	0
Net impairment of available-for-sale securities recognized in earnings	108	37	322	(95)
Derivative gains (losses)	(2,950)	(133)	(1,221)	(2,745)
Gains (losses) on trading securities	(103)	(202)	(329)	(243)
Gains (losses) on mortgage loans	0	0	0	0
Other non-interest income (loss)	1,028	1,594	2,949	8,004
Non-interest expense
Administrative expenses	(76)	(104)	(239)	(339)
Real estate owned operations income (expense)	0	0	0	0
Other non-interest expense includes adjustments	0	0	(2)	(6)
Segment Adjustments	205	168	602	468
Income tax benefit (expense)	431	(682)	(1,137)	(2,308)
Net income (loss)	(963)	1,440	2,424	5,060
Changes in unrealized gains (losses) related to available-for-sale securities	(80)	769	(110)	1,742
Changes in unrealized gains (losses) related to cash flow hedge relationships	35	50	132	151
Changes in defined benefit plans	0	0	0	0
Total other comprehensive income (loss), net of taxes	(45)	819	22	1,893
Comprehensive income (loss)	(1,008)	2,259	2,446	6,953
Multifamily | Operating segments
Segment Reporting, Reconciling Item for Operating Profit (Loss) from Segment to Consolidated [Line Items]
Interest Income (Expense), Net	148	240	671	705
Benefit (provision) for credit losses	0	10	20	52
Non-interest income (loss)
Management and guarantee income	87	65	239	186
Net impairment of available-for-sale securities recognized in earnings	4	0	(22)	0
Derivative gains (losses)	(502)	310	7	507
Gains (losses) on trading securities	47	(14)	0	60
Gains (losses) on mortgage loans	122	116	216	526
Other non-interest income (loss)	41	11	106	143
Non-interest expense
Administrative expenses	(80)	(66)	(240)	(199)
Real estate owned operations income (expense)	0	6	0	8
Other non-interest expense includes adjustments	(13)	(3)	(36)	(16)
Segment Adjustments	0	0	0	0
Income tax benefit (expense)	43	(230)	(307)	(633)
Net income (loss)	(103)	445	654	1,339
Changes in unrealized gains (losses) related to available-for-sale securities	19	(113)	(108)	(180)
Changes in unrealized gains (losses) related to cash flow hedge relationships	0	0	0	0
Changes in defined benefit plans	0	0	0	0
Total other comprehensive income (loss), net of taxes	19	(113)	(108)	(180)
Comprehensive income (loss)	$ (84)	$ 332	$ 546	$ 1,159

Financial Guarantees (Details)

Financial Guarantees (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Guarantor Obligations [Line Items]
Cash advances related to multifamily liquidity guarantees	$ 0		$ 0		$ 0
Mortgage related securities backed by single-family loans
Guarantor Obligations [Line Items]
UPB of Issuances and Guarantees	97,500,000,000	$ 77,400,000,000	277,500,000,000	$ 186,900,000,000
Mortgage related securities backed by multifamily mortgage loans | Non-consolidated Freddie Mac securities
Guarantor Obligations [Line Items]
UPB of Issuances and Guarantees	5,300,000,000	$ 3,900,000,000	18,200,000,000	11,000,000,000
Single-family long-term standby commitments
Guarantor Obligations [Line Items]
UPB of Issuances and Guarantees			3,300,000,000	$ 2,100,000,000
UPB of Guarantees	3,000,000,000		3,000,000,000		16,500,000,000
Credit enhanced multifamily housing revenue bonds
Guarantor Obligations [Line Items]
UPB of Guarantees	9,600,000,000		9,600,000,000		9,300,000,000
Securities backed by HFA bonds
Guarantor Obligations [Line Items]
UPB of Guarantees	$ 0		$ 0		$ 400,000,000

Financial Guarantees - Financia

Financial Guarantees - Financial Guarantees (Details) - USD ($) $ in Millions	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014	Jun. 30, 2015	Sep. 30, 2014	Jun. 30, 2014	Dec. 31, 2013
Guarantor Obligations [Line Items]
Recognized Liability	$ 1,573	$ 1,623
Reserve for guarantee losses	86	126	$ 81	$ 110	$ 116	$ 111
Other guarantee commitments
Guarantor Obligations [Line Items]
Maximum Exposure	12,551	26,147
Recognized Liability	$ 576	$ 772
Maximum Remaining Term	39 years	39 years
Derivative Instruments
Guarantor Obligations [Line Items]
Maximum Exposure	$ 15,609	$ 21,336
Recognized Liability	$ 168	$ 154
Maximum Remaining Term	30 years	31 years
Non-consolidated Freddie Mac securities | Payment Guarantee
Guarantor Obligations [Line Items]
Maximum Exposure	$ 102,527	$ 87,529
Recognized Liability	$ 1,013	$ 861
Maximum Remaining Term	40 years	39 years

Concentration of Credit and O87

Concentration of Credit and Other Risks (Details) $ in Millions	1 Months Ended	9 Months Ended		12 Months Ended
	May. 31, 2015USD ($)	Sep. 30, 2015USD ($)numberofcounterparties	Sep. 30, 2014USD ($)	Dec. 31, 2014USD ($)	Dec. 31, 2013USD ($)
Concentration Risk [Line Items]
UPB of single-family credit guarantee portfolio		$ 1,700,000		$ 1,700,000
Single-Family serious delinquency rate		1.41%		1.88%
Securities purchased under agreement to resell		$ 38,738		$ 51,903
Cash and cash equivalents		5,000	$ 16,191	$ 10,928	$ 11,281
Countrywide non-agency mortgage related securities settlement
Concentration Risk [Line Items]
Expected benefit from settlement		400
Judicial Ruling | FHFA vs. Nomura
Concentration Risk [Line Items]
Litigation Settlement, Amount	$ 779
Payment Cap The Litigation Defendant Agreed To Pay		$ 33
Nomura and RBS Securities Inc | Judicial Ruling | FHFA vs. Nomura
Concentration Risk [Line Items]
Litigation Settlement, Amount	$ (806)
Single-family UPB
Concentration Risk [Line Items]
Concentration risk percentage		100.00%		100.00%
Single-family Credit Losses
Concentration Risk [Line Items]
Concentration risk percentage		100.00%	100.00%
Current LTV ratio greater than 100%
Concentration Risk [Line Items]
Single-Family serious delinquency rate		8.09%		9.06%
Current LTV ratio greater than 100% | Single-family UPB
Concentration Risk [Line Items]
Concentration risk percentage		4.00%		6.00%
2005 to 2008 Legacy single-family book
Concentration Risk [Line Items]
Single-Family serious delinquency rate		6.26%		7.59%
2005 to 2008 Legacy single-family book | Single-family UPB
Concentration Risk [Line Items]
Concentration risk percentage		11.00%		13.00%
2005 to 2008 Legacy single-family book | Single-family Credit Losses
Concentration Risk [Line Items]
Concentration risk percentage		80.00%	83.00%
Top Single-family sellers | Single-family loan purchase volume
Concentration Risk [Line Items]
Concentration risk percentage		51.00%
Number of counterparties | numberofcounterparties		10
Wells Fargo Bank, N.A. | Single-family loan purchase volume
Concentration Risk [Line Items]
Concentration risk percentage		12.00%
Bank of America, N.A. | Single-family loan purchase volume
Concentration Risk [Line Items]
Concentration risk percentage		12.00%
Three largest non-depository sellers | Single-family loan purchase volume
Concentration Risk [Line Items]
Concentration risk percentage		10.00%
Wells Fargo Bank, N.A. | Single-family loan serviced
Concentration Risk [Line Items]
Concentration risk percentage		21.00%
JPMorgan Chase Bank, N.A. | Single-family loan serviced
Concentration Risk [Line Items]
Concentration risk percentage		10.00%
Three largest non-depository servicers | Single-family UPB
Concentration Risk [Line Items]
Concentration risk percentage		10.00%
Top Multifamily Seller/Servicers | Multifamily loan purchase volume
Concentration Risk [Line Items]
Concentration risk percentage		82.00%
Number of counterparties		10
CBRE Capital Markets, Inc. | Multifamily loan purchase volume
Concentration Risk [Line Items]
Concentration risk percentage		17.00%
Walker & Dunlop, LLC | Multifamily loan purchase volume
Concentration Risk [Line Items]
Concentration risk percentage		14.00%
Holliday Fenoglio Fowler, L.P. | Multifamily loan purchase volume
Concentration Risk [Line Items]
Concentration risk percentage		14.00%
Mortgage Insurers
Concentration Risk [Line Items]
Maximum loss limit from mortgage insurers for single-family credit guarantee portfolio		$ 64,500
UPB of single-family credit guarantee portfolio with mortgage insurance coverage		251,700
Cash proceeds received from mortgage insurers		500	$ 1,000
Receivables outstanding from mortgage Insurers		300		$ 400
Receivables outstanding, net of reserves, from mortgage insurers		200		300
Amount Of Cumulative Unpaid Deferred Payment Obligation		$ 400		400
Counterparties accounted for 10% or more | Single-family loan serviced
Concentration Risk [Line Items]
Number of counterparties | numberofcounterparties		2
Counterparties accounted for 10% or more | Multifamily loan purchase volume
Concentration Risk [Line Items]
Number of counterparties | numberofcounterparties		3
Counterparties accounted for 10% or more | Multifamily loan serviced
Concentration Risk [Line Items]
Concentration risk percentage		37.00%
Number of counterparties | numberofcounterparties		3
Counterparties accounted for 10% or more | Mortgage insurance coverage
Concentration Risk [Line Items]
Concentration risk percentage		80.00%
Number of counterparties | numberofcounterparties		4
Cash and Other Investment Counterparties
Concentration Risk [Line Items]
Cash and other non-mortgage investments		$ 58,800		71,400
S&P short-term credit ratings of A-1 or above
Concentration Risk [Line Items]
Securities purchased under agreement to resell		$ 22,700
S&P short-term credit ratings of A-1 or above | Securities purchased under agreements to resell
Concentration Risk [Line Items]
Number of counterparties | numberofcounterparties		15
S&P short-term credit rating of A-2
Concentration Risk [Line Items]
Securities purchased under agreement to resell		$ 5,000
S&P short-term credit rating of A-2 | Securities purchased under agreements to resell
Concentration Risk [Line Items]
Number of counterparties | numberofcounterparties		4
No third party credit rating
Concentration Risk [Line Items]
Securities purchased under agreement to resell		$ 11,000
No third party credit rating | Securities purchased under agreements to resell
Concentration Risk [Line Items]
Number of counterparties | numberofcounterparties		3
Federal Resrve Bank of New York
Concentration Risk [Line Items]
Cash and cash equivalents		$ 20,100
Ocwen
Concentration Risk [Line Items]
UPB of loans underlying SF non-agency MRS investments		13,500		17,900
Ocwen | Single-family loan serviced
Concentration Risk [Line Items]
UPB of single-family credit guarantee portfolio		$ 28,300		$ 50,900
Percentage decrease in the UPB of Freddie Mac loans serviced by Ocwen		44.00%

Concentration of Credit and O88

Concentration of Credit and Other Risks - Concentration of Credit Risk - Single-Family Credit Guarantee Portfolio (Details)	9 Months Ended		12 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Concentration Risk [Line Items]
Serious delinquency rate	1.41%		1.88%
West
Concentration Risk [Line Items]
Serious delinquency rate	0.86%		1.23%
Northeast
Concentration Risk [Line Items]
Serious delinquency rate	2.20%		2.81%
North Central
Concentration Risk [Line Items]
Serious delinquency rate	1.18%		1.48%
Southeast
Concentration Risk [Line Items]
Serious delinquency rate	1.69%		2.40%
Southwest
Concentration Risk [Line Items]
Serious delinquency rate	0.91%		1.16%
AZ, CA, FL, NV
Concentration Risk [Line Items]
Serious delinquency rate	1.25%		1.91%
IL, MI, OH
Concentration Risk [Line Items]
Serious delinquency rate	1.36%		1.70%
NY, NJ
Concentration Risk [Line Items]
Serious delinquency rate	3.63%		4.62%
All Other
Concentration Risk [Line Items]
Serious delinquency rate	1.18%		1.53%
Originated in 2015
Concentration Risk [Line Items]
Serious delinquency rate	0.00%
Originated in 2014
Concentration Risk [Line Items]
Serious delinquency rate	0.07%		0.02%
Originated in 2013
Concentration Risk [Line Items]
Serious delinquency rate	0.10%		0.06%
Originated in 2012
Concentration Risk [Line Items]
Serious delinquency rate	0.09%		0.09%
Originated in 2011
Concentration Risk [Line Items]
Serious delinquency rate	0.26%		0.26%
Originated in 2010
Concentration Risk [Line Items]
Serious delinquency rate	0.46%		0.46%
Originated in 2009
Concentration Risk [Line Items]
Serious delinquency rate	0.87%		0.92%
Subtotal - New single-family book
Concentration Risk [Line Items]
Serious delinquency rate	0.20%		0.24%
HARP and other relief refinance loans
Concentration Risk [Line Items]
Serious delinquency rate	0.70%		0.75%
2005 to 2008 Legacy single-family book
Concentration Risk [Line Items]
Serious delinquency rate	6.26%		7.59%
Pre-2005 Legacy single-family book
Concentration Risk [Line Items]
Serious delinquency rate	2.64%		3.10%
Single-family UPB
Concentration Risk [Line Items]
Concentration risk percentage	100.00%		100.00%
Single-family UPB | West
Concentration Risk [Line Items]
Concentration risk percentage	29.00%		29.00%
Single-family UPB | Northeast
Concentration Risk [Line Items]
Concentration risk percentage	26.00%		26.00%
Single-family UPB | North Central
Concentration Risk [Line Items]
Concentration risk percentage	17.00%		17.00%
Single-family UPB | Southeast
Concentration Risk [Line Items]
Concentration risk percentage	16.00%		16.00%
Single-family UPB | Southwest
Concentration Risk [Line Items]
Concentration risk percentage	12.00%		12.00%
Single-family UPB | AZ, CA, FL, NV
Concentration Risk [Line Items]
Concentration risk percentage	26.00%		26.00%
Single-family UPB | IL, MI, OH
Concentration Risk [Line Items]
Concentration risk percentage	10.00%		10.00%
Single-family UPB | NY, NJ
Concentration Risk [Line Items]
Concentration risk percentage	9.00%		9.00%
Single-family UPB | All Other
Concentration Risk [Line Items]
Concentration risk percentage	55.00%		55.00%
Single-family UPB | Originated in 2015
Concentration Risk [Line Items]
Concentration risk percentage	12.00%
Single-family UPB | Originated in 2014
Concentration Risk [Line Items]
Concentration risk percentage	11.00%		12.00%
Single-family UPB | Originated in 2013
Concentration Risk [Line Items]
Concentration risk percentage	14.00%		16.00%
Single-family UPB | Originated in 2012
Concentration Risk [Line Items]
Concentration risk percentage	13.00%		14.00%
Single-family UPB | Originated in 2011
Concentration Risk [Line Items]
Concentration risk percentage	5.00%		6.00%
Single-family UPB | Originated in 2010
Concentration Risk [Line Items]
Concentration risk percentage	5.00%		6.00%
Single-family UPB | Originated in 2009
Concentration Risk [Line Items]
Concentration risk percentage	5.00%		6.00%
Single-family UPB | Subtotal - New single-family book
Concentration Risk [Line Items]
Concentration risk percentage	65.00%		60.00%
Single-family UPB | HARP and other relief refinance loans
Concentration Risk [Line Items]
Concentration risk percentage	18.00%		20.00%
Single-family UPB | 2005 to 2008 Legacy single-family book
Concentration Risk [Line Items]
Concentration risk percentage	11.00%		13.00%
Single-family UPB | Pre-2005 Legacy single-family book
Concentration Risk [Line Items]
Concentration risk percentage	6.00%		7.00%
Single-family Credit Losses
Concentration Risk [Line Items]
Concentration risk percentage	100.00%	100.00%
Single-family Credit Losses | West
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	13.00%
Single-family Credit Losses | Northeast
Concentration Risk [Line Items]
Concentration risk percentage	43.00%	26.00%
Single-family Credit Losses | North Central
Concentration Risk [Line Items]
Concentration risk percentage	16.00%	21.00%
Single-family Credit Losses | Southeast
Concentration Risk [Line Items]
Concentration risk percentage	25.00%	36.00%
Single-family Credit Losses | Southwest
Concentration Risk [Line Items]
Concentration risk percentage	3.00%	4.00%
Single-family Credit Losses | AZ, CA, FL, NV
Concentration Risk [Line Items]
Concentration risk percentage	27.00%	37.00%
Single-family Credit Losses | IL, MI, OH
Concentration Risk [Line Items]
Concentration risk percentage	13.00%	17.00%
Single-family Credit Losses | NY, NJ
Concentration Risk [Line Items]
Concentration risk percentage	28.00%	10.00%
Single-family Credit Losses | All Other
Concentration Risk [Line Items]
Concentration risk percentage	32.00%	36.00%
Single-family Credit Losses | Originated in 2015
Concentration Risk [Line Items]
Concentration risk percentage	0.00%
Single-family Credit Losses | Originated in 2014
Concentration Risk [Line Items]
Concentration risk percentage	0.00%	0.00%
Single-family Credit Losses | Originated in 2013
Concentration Risk [Line Items]
Concentration risk percentage	0.00%	0.00%
Single-family Credit Losses | Originated in 2012
Concentration Risk [Line Items]
Concentration risk percentage	0.00%	0.00%
Single-family Credit Losses | Originated in 2011
Concentration Risk [Line Items]
Concentration risk percentage	0.00%	0.00%
Single-family Credit Losses | Originated in 2010
Concentration Risk [Line Items]
Concentration risk percentage	1.00%	0.00%
Single-family Credit Losses | Originated in 2009
Concentration Risk [Line Items]
Concentration risk percentage	2.00%	2.00%
Single-family Credit Losses | Subtotal - New single-family book
Concentration Risk [Line Items]
Concentration risk percentage	3.00%	2.00%
Single-family Credit Losses | HARP and other relief refinance loans
Concentration Risk [Line Items]
Concentration risk percentage	7.00%	7.00%
Single-family Credit Losses | 2005 to 2008 Legacy single-family book
Concentration Risk [Line Items]
Concentration risk percentage	80.00%	83.00%
Single-family Credit Losses | Pre-2005 Legacy single-family book
Concentration Risk [Line Items]
Concentration risk percentage	10.00%	8.00%

Concentration of Credit and O89

Concentration of Credit and Other Risks - Certain Higher-Risk Categories in the Single-Family Credit Guarantee Portfolio (Details)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Concentration Risk [Line Items]
Serious delinquency rate	1.41%	1.88%
Interest-only
Concentration Risk [Line Items]
Serious delinquency rate	7.11%	9.36%
Option ARM
Concentration Risk [Line Items]
Serious delinquency rate	8.46%	9.87%
Alt-A
Concentration Risk [Line Items]
Serious delinquency rate	7.01%	8.53%
Original LTV ratio greater than 90%
Concentration Risk [Line Items]
Serious delinquency rate	2.07%	2.58%
Lower credit scores at origination (less than 620)
Concentration Risk [Line Items]
Serious delinquency rate	6.89%	8.57%
Single-family UPB
Concentration Risk [Line Items]
Percentage of Portfolio	100.00%	100.00%
Single-family UPB | Interest-only
Concentration Risk [Line Items]
Percentage of Portfolio	1.00%	2.00%
Single-family UPB | Option ARM
Concentration Risk [Line Items]
Percentage of Portfolio	0.00%	0.00%
Single-family UPB | Alt-A
Concentration Risk [Line Items]
Percentage of Portfolio	3.00%	3.00%
Single-family UPB | Original LTV ratio greater than 90%
Concentration Risk [Line Items]
Percentage of Portfolio	16.00%	16.00%
Single-family UPB | Lower credit scores at origination (less than 620)
Concentration Risk [Line Items]
Percentage of Portfolio	3.00%	3.00%

Concentration of Credit and O90

Concentration of Credit and Other Risks - Concentration of Credit Risk - Multifamily Mortgage Portfolio (Details) - USD ($) $ in Billions	Sep. 30, 2015	Dec. 31, 2014
Concentration Risk [Line Items]
Multifamily Mortgage Portfolio UPB	$ 161.8	$ 143.3
Multifamily Delinquency Rate	0.01%	0.04%
Unsecuritized Loans - HFI
Concentration Risk [Line Items]
Multifamily Mortgage Portfolio UPB	$ 31.5	$ 40.9
Multifamily Delinquency Rate	0.00%	0.03%
Unsecuritized Loans - HFS
Concentration Risk [Line Items]
Multifamily Mortgage Portfolio UPB	$ 22.7	$ 12.1
Multifamily Delinquency Rate	0.00%	0.00%
K Certificates
Concentration Risk [Line Items]
Multifamily Mortgage Portfolio UPB	$ 92.4	$ 76
Multifamily Delinquency Rate	0.02%	0.01%
Other Freddie Mac mortgage related securities
Concentration Risk [Line Items]
Multifamily Mortgage Portfolio UPB	$ 5.6	$ 5
Multifamily Delinquency Rate	0.00%	0.64%
Other guarantee commitments
Concentration Risk [Line Items]
Multifamily Mortgage Portfolio UPB	$ 9.6	$ 9.3
Multifamily Delinquency Rate	0.00%	0.00%

Fair Value Disclosures (Details

Fair Value Disclosures (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014	Dec. 31, 2014
Fair Value Disclosures [Line Items]
Net transfer in (out) between Level 1 and Level 2 fair value assets	$ 1	$ 1	$ 1	$ 1
Net transfer in (out) between Level 1 and Level 2 fair value liabilities	1	1	1	1
Decrease (Increase) Of Fair Value Of Mortgage Loans Without Benefits Reflected In The Pricing Of HARP Loans	14,500		14,500		$ 19,100
Total Fair Value Of The HARP Loans Presented In Consolidated Fair Value Balance Sheets	94,000		94,000		$ 119,800
Multifamily Held-For-Sale Loans with Fair Value Option Elected
Fair Value Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	164	117	262	526
Debt Securities with Fair Value Option Elected
Fair Value Disclosures [Line Items]
Fair Value, Option, Changes in Fair Value, Gain (Loss)	$ 80	$ 156	$ (65)	$ (22)

Fair Value Disclosures - Assets

Fair Value Disclosures - Assets and Liabilities on Our Consolidated Balance Sheets Measured at Fair Value on a Recurring Basis (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Mortgage Loans [Abstract]
Mortgage loans, held for sale, at fair value	$ 20,880	$ 12,130
Derivative Assets Net [Abstract]
Derivative Assets	605	822
Netting Adjustment	(9,987)	(9,122)
Derivative Liabilities Net [Abstract]
Derivative Liabilities	1,670	1,963
Netting Adjustment	(13,536)	(11,597)
Net Cash Pledged As Collateral	4,200	3,200
Net interest receivable (payable) of derivative assets/liabilities	(600)	(700)
Held by consolidated trusts
Liabilities, Fair Value Disclosure [Abstract]
Debt securities recorded at fair value	131	42
Freddie Mac parent
Liabilities, Fair Value Disclosure [Abstract]
Debt securities recorded at fair value	7,379	5,820
Fair Value, Measurements, Recurring [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	81,573	106,550
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	35,806	30,437
Total investments in securities	117,379	136,987
Mortgage Loans [Abstract]
Mortgage loans, held for sale, at fair value	20,880	12,130
Derivative Assets Net [Abstract]
Derivative Assets	605	822
Netting Adjustment	(9,987)	(9,122)
Other Assets [Abstract]
Guarantee Assets	1,604	1,626
All Other Assets		5
Total other assets		1,631
Total Assets at Fair value	140,468	151,570
Liabilities, Fair Value Disclosure [Abstract]
All Other Liabilities	7
Derivative Liabilities Net [Abstract]
Derivative Liabilities	1,670	1,963
Netting Adjustment	(13,536)	(11,597)
Total liabilities carried at fair value on a recurring basis	9,187	7,825
Fair Value, Measurements, Recurring [Member] | Held by consolidated trusts
Liabilities, Fair Value Disclosure [Abstract]
Debt securities recorded at fair value	131	42
Fair Value, Measurements, Recurring [Member] | Freddie Mac parent
Liabilities, Fair Value Disclosure [Abstract]
Debt securities recorded at fair value	7,379	5,820
Fair Value, Measurements, Recurring [Member] | Total Derivatives Before Netting Adjustments [Member]
Derivative Assets Net [Abstract]
Derivative Assets	10,592	9,944
Derivative Liabilities Net [Abstract]
Derivative Liabilities	15,206	13,560
Fair Value, Measurements, Recurring [Member] | Interest Rate Swap [Member]
Derivative Assets Net [Abstract]
Derivative Assets	5,629	5,653
Derivative Liabilities Net [Abstract]
Derivative Liabilities	14,850	13,316
Fair Value, Measurements, Recurring [Member] | Option-Based Derivatives [Member]
Derivative Assets Net [Abstract]
Derivative Assets	4,841	4,224
Derivative Liabilities Net [Abstract]
Derivative Liabilities	143	127
Fair Value, Measurements, Recurring [Member] | Other Derivative [Member]
Derivative Assets Net [Abstract]
Derivative Assets	122	67
Derivative Liabilities Net [Abstract]
Derivative Liabilities	213	117
Fair Value, Measurements, Recurring [Member] | Mortage-related securities
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	81,573	106,550
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	23,648	23,755
Total investments in securities	105,221	130,305
Fair Value, Measurements, Recurring [Member] | Freddie Mac
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	35,577	39,099
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	16,324	17,469
Fair Value, Measurements, Recurring [Member] | Fannie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	7,836	11,313
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	6,887	6,099
Fair Value, Measurements, Recurring [Member] | Ginnie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	173	199
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	290	16
Fair Value, Measurements, Recurring [Member] | CMBS
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	14,576	21,822
Fair Value, Measurements, Recurring [Member] | Subprime
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	13,809	20,589
Fair Value, Measurements, Recurring [Member] | Option ARM
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,882	5,649
Fair Value, Measurements, Recurring [Member] | Alt-A and other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,646	5,043
Fair Value, Measurements, Recurring [Member] | Obligations of states and political subdivisions
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	1,480	2,198
Fair Value, Measurements, Recurring [Member] | Manufactured housing
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	594	638
Fair Value, Measurements, Recurring [Member] | Other
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	147	171
Fair Value, Measurements, Recurring [Member] | US Treasury Securities [Member]
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	12,158	6,682
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	12,158	6,682
Total investments in securities	12,158	6,682
Mortgage Loans [Abstract]
Mortgage loans, held for sale, at fair value	0	0
Derivative Assets Net [Abstract]
Derivative Assets	0	5
Other Assets [Abstract]
Guarantee Assets	0	0
All Other Assets		0
Total other assets		0
Total Assets at Fair value	12,158	6,687
Liabilities, Fair Value Disclosure [Abstract]
All Other Liabilities	0
Derivative Liabilities Net [Abstract]
Derivative Liabilities	0	28
Total liabilities carried at fair value on a recurring basis	0	28
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Held by consolidated trusts
Liabilities, Fair Value Disclosure [Abstract]
Debt securities recorded at fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Freddie Mac parent
Liabilities, Fair Value Disclosure [Abstract]
Debt securities recorded at fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Total Derivatives Before Netting Adjustments [Member]
Derivative Assets Net [Abstract]
Derivative Assets	0	5
Derivative Liabilities Net [Abstract]
Derivative Liabilities	0	28
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Interest Rate Swap [Member]
Derivative Assets Net [Abstract]
Derivative Assets	0	0
Derivative Liabilities Net [Abstract]
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Option-Based Derivatives [Member]
Derivative Assets Net [Abstract]
Derivative Assets	0	5
Derivative Liabilities Net [Abstract]
Derivative Liabilities	0	28
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other Derivative [Member]
Derivative Assets Net [Abstract]
Derivative Assets	0	0
Derivative Liabilities Net [Abstract]
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Mortage-related securities
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Freddie Mac
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Fannie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Ginnie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | CMBS
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Subprime
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Option ARM
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Alt-A and other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Obligations of states and political subdivisions
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Manufactured housing
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | Other
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 1 [Member] | US Treasury Securities [Member]
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	12,158	6,682
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	51,475	64,655
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	23,161	22,591
Total investments in securities	74,636	87,246
Mortgage Loans [Abstract]
Mortgage loans, held for sale, at fair value	20,880	12,130
Derivative Assets Net [Abstract]
Derivative Assets	10,573	9,912
Other Assets [Abstract]
Guarantee Assets	0	0
All Other Assets		0
Total other assets		0
Total Assets at Fair value	106,089	109,288
Liabilities, Fair Value Disclosure [Abstract]
All Other Liabilities	0
Derivative Liabilities Net [Abstract]
Derivative Liabilities	15,164	13,495
Total liabilities carried at fair value on a recurring basis	22,674	19,357
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Held by consolidated trusts
Liabilities, Fair Value Disclosure [Abstract]
Debt securities recorded at fair value	131	42
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Freddie Mac parent
Liabilities, Fair Value Disclosure [Abstract]
Debt securities recorded at fair value	7,379	5,820
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Total Derivatives Before Netting Adjustments [Member]
Derivative Assets Net [Abstract]
Derivative Assets	10,573	9,912
Derivative Liabilities Net [Abstract]
Derivative Liabilities	15,164	13,495
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Interest Rate Swap [Member]
Derivative Assets Net [Abstract]
Derivative Assets	5,629	5,653
Derivative Liabilities Net [Abstract]
Derivative Liabilities	14,843	13,316
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Option-Based Derivatives [Member]
Derivative Assets Net [Abstract]
Derivative Assets	4,841	4,219
Derivative Liabilities Net [Abstract]
Derivative Liabilities	143	99
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other Derivative [Member]
Derivative Assets Net [Abstract]
Derivative Assets	103	40
Derivative Liabilities Net [Abstract]
Derivative Liabilities	178	80
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Mortage-related securities
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	23,161	22,591
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Freddie Mac
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	32,573	34,868
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	15,881	16,542
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Fannie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	7,779	11,228
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	6,845	5,867
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Ginnie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	171	195
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	290	15
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | CMBS
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	10,938	18,348
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Subprime
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Option ARM
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Alt-A and other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	14	16
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Obligations of states and political subdivisions
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Manufactured housing
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | Other
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	145	167
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 2 [Member] | US Treasury Securities [Member]
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	30,098	41,895
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	487	1,164
Total investments in securities	30,585	43,059
Mortgage Loans [Abstract]
Mortgage loans, held for sale, at fair value	0	0
Derivative Assets Net [Abstract]
Derivative Assets	19	27
Other Assets [Abstract]
Guarantee Assets	1,604	1,626
All Other Assets		5
Total other assets		1,631
Total Assets at Fair value	32,208	44,717
Liabilities, Fair Value Disclosure [Abstract]
All Other Liabilities	7
Derivative Liabilities Net [Abstract]
Derivative Liabilities	42	37
Total liabilities carried at fair value on a recurring basis	49	37
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Held by consolidated trusts
Liabilities, Fair Value Disclosure [Abstract]
Debt securities recorded at fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Freddie Mac parent
Liabilities, Fair Value Disclosure [Abstract]
Debt securities recorded at fair value	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Total Derivatives Before Netting Adjustments [Member]
Derivative Assets Net [Abstract]
Derivative Assets	19	27
Derivative Liabilities Net [Abstract]
Derivative Liabilities	42	37
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Interest Rate Swap [Member]
Derivative Assets Net [Abstract]
Derivative Assets	0	0
Derivative Liabilities Net [Abstract]
Derivative Liabilities	7	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Option-Based Derivatives [Member]
Derivative Assets Net [Abstract]
Derivative Assets	0	0
Derivative Liabilities Net [Abstract]
Derivative Liabilities	0	0
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other Derivative [Member]
Derivative Assets Net [Abstract]
Derivative Assets	19	27
Derivative Liabilities Net [Abstract]
Derivative Liabilities	35	37
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Mortage-related securities
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	30,098	41,895
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	487	1,164
Total investments in securities	30,585	43,059
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Freddie Mac
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,004	4,231
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	443	927
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Fannie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	57	85
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	42	232
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Ginnie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	2	4
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	0	1
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | CMBS
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,638	3,474
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Subprime
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	13,809	20,589
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Option ARM
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,882	5,649
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Alt-A and other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,632	5,027
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Obligations of states and political subdivisions
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	1,480	2,198
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Manufactured housing
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	594	638
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | Other
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	2	4
Fair Value, Measurements, Recurring [Member] | Fair Value, Inputs, Level 3 [Member] | US Treasury Securities [Member]
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	$ 0	$ 0

Fair Value Disclosures - Asse93

Fair Value Disclosures - Assets and Liabilities on Our Consolidated Balance Sheets Measured at Fair Value on a Recurring Basis Using Significant Unobservable Inputs (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Other Debt, At Fair Value [Member]
Liabilities:
Begining Balance		$ 1,000		$ 1,528
Included in Earnings		0		(7)
Included in Other Comprehensive Income		0		0
Total realized and unrealized (gains) losses		0		(7)
Purchases		0		0
Issues		0		0
Sales		0		0
Settlements, Net		(1,000)		(1,521)
Transfers into Level 3		0		0
Transfers out of Level 3		0		0
Ending Balance		0		0
Unrealized Gains (Losses) Still Held:
Unrealized (Gains) Losses Still Held - Liabilities		0		0
Net Derivatives [Member]
Liabilities:
Begining Balance	$ 22	58	$ 10	325
Included in Earnings	(12)	(66)	5	(95)
Included in Other Comprehensive Income	0	0	0	0
Total realized and unrealized (gains) losses	(12)	(66)	5	(95)
Purchases	0	0	0	0
Issues	0	0	0	0
Sales	0	0	0	0
Settlements, Net	13	19	8	62
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	(281)
Ending Balance	23	11	23	11
Unrealized Gains (Losses) Still Held:
Unrealized (Gains) Losses Still Held - Liabilities	1	(49)	13	(30)
All Other Liabilities [Member]
Liabilities:
Begining Balance	0		0
Included in Earnings	7		7
Included in Other Comprehensive Income	0		0
Total realized and unrealized (gains) losses	7		7
Purchases	0		0
Issues	0		0
Sales	0		0
Settlements, Net	0		0
Transfers into Level 3	0		0
Transfers out of Level 3	0		0
Ending Balance	7		7
Unrealized Gains (Losses) Still Held:
Unrealized (Gains) Losses Still Held - Liabilities	14		12
Available-For-Sale Mortgage-Related Securities [Member]
Assets:
Beginning Balance	33,881	46,901	41,895	52,149
Included in Earnings	334	(147)	1,118	(409)
Included in Other Comprehensive Income	(111)	1,376	161	3,322
Total realized and unrealized gains (losses)	223	1,229	1,279	2,913
Purchases	186	4,364	800	5,616
Issues	34	0	34	0
Sales	(2,725)	(6,137)	(8,503)	(12,988)
Settlements, net	(1,291)	(657)	(3,602)	(2,821)
Transfers into Level 3	0	45	1	5
Transfers out of Level 3	(210)	(913)	(1,806)	(42)
Ending Balance	30,098	44,832	30,098	44,832
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	105	(166)	271	(687)
Available-For-Sale Mortgage-Related Securities [Member] | Freddie Mac
Assets:
Beginning Balance	3,143	2,892	4,231	1,939
Included in Earnings	3	3	29	1
Included in Other Comprehensive Income	37	1	19	3
Total realized and unrealized gains (losses)	40	4	48	4
Purchases	186	4,364	800	5,567
Issues	34	0	34	0
Sales	(155)	(2,077)	(527)	(3,086)
Settlements, net	(88)	(34)	214	(79)
Transfers into Level 3	0	0	0	3
Transfers out of Level 3	(156)	(843)	(1,796)	(42)
Ending Balance	3,004	4,306	3,004	4,306
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	(1)	0	(1)	0
Available-For-Sale Mortgage-Related Securities [Member] | Fannie Mae
Assets:
Beginning Balance	104	136	85	131
Included in Earnings	0	0	0	0
Included in Other Comprehensive Income	0	(1)	(1)	(4)
Total realized and unrealized gains (losses)	0	(1)	(1)	(4)
Purchases	0	0	0	48
Issues	0	0	0	0
Sales	0	0	0	(55)
Settlements, net	(7)	(4)	(18)	(15)
Transfers into Level 3	0	45	1	1
Transfers out of Level 3	(40)	(70)	(10)	0
Ending Balance	57	106	57	106
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	0	0	0	0
Available-For-Sale Mortgage-Related Securities [Member] | Ginnie Mae
Assets:
Beginning Balance	2	5	4	12
Included in Earnings	0	0	0	0
Included in Other Comprehensive Income	0	0	0	0
Total realized and unrealized gains (losses)	0	0	0	0
Purchases	0	0	0	0
Issues	0	0	0	0
Sales	0	0	0	(6)
Settlements, net	0	(1)	(2)	(3)
Transfers into Level 3	0	0	0	1
Transfers out of Level 3	0	0	0	0
Ending Balance	2	4	2	4
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	0	0	0	0
Available-For-Sale Mortgage-Related Securities [Member] | CMBS
Assets:
Beginning Balance	3,534	3,326	3,474	3,109
Included in Earnings	4	0	(21)	0
Included in Other Comprehensive Income	108	41	209	269
Total realized and unrealized gains (losses)	112	41	188	269
Purchases	0	0	0	0
Issues	0	0	0	0
Sales	0	0	(2)	0
Settlements, net	(8)	(15)	(22)	(26)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending Balance	3,638	3,352	3,638	3,352
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	4	0	(21)	0
Available-For-Sale Mortgage-Related Securities [Member] | Subprime
Assets:
Beginning Balance	15,802	24,291	20,589	27,499
Included in Earnings	177	(53)	704	(456)
Included in Other Comprehensive Income	(176)	1,068	(71)	2,556
Total realized and unrealized gains (losses)	1	1,015	633	2,100
Purchases	0	0	0	0
Issues	0	0	0	0
Sales	(1,392)	(2,423)	(5,532)	(5,628)
Settlements, net	(602)	(182)	(1,881)	(1,270)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending Balance	13,809	22,701	13,809	22,701
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	37	(125)	109	(582)
Available-For-Sale Mortgage-Related Securities [Member] | Option ARM
Assets:
Beginning Balance	4,833	6,231	5,649	6,574
Included in Earnings	66	(12)	186	(41)
Included in Other Comprehensive Income	4	172	63	174
Total realized and unrealized gains (losses)	70	160	249	133
Purchases	0	0	0	0
Issues	0	0	0	0
Sales	(832)	(616)	(1,522)	(791)
Settlements, net	(189)	(68)	(494)	(209)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending Balance	3,882	5,707	3,882	5,707
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	30	(39)	105	(72)
Available-For-Sale Mortgage-Related Securities [Member] | Alt-A and other
Assets:
Beginning Balance	4,222	6,454	5,027	8,706
Included in Earnings	84	(85)	221	86
Included in Other Comprehensive Income	(82)	96	(55)	232
Total realized and unrealized gains (losses)	2	11	166	318
Purchases	0	0	0	0
Issues	0	0	0	0
Sales	(346)	(1,021)	(919)	(3,409)
Settlements, net	(232)	69	(642)	(102)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	(14)	0	0	0
Ending Balance	3,632	5,513	3,632	5,513
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	35	(2)	0	(33)
Available-For-Sale Mortgage-Related Securities [Member] | Obligations of states and political subdivisions
Assets:
Beginning Balance	1,627	2,898	2,198	3,495
Included in Earnings	0	0	0	1
Included in Other Comprehensive Income	1	(1)	(11)	71
Total realized and unrealized gains (losses)	1	(1)	(11)	72
Purchases	0	0	0	1
Issues	0	0	0	0
Sales	0	0	0	(13)
Settlements, net	(148)	(404)	(707)	(1,062)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending Balance	1,480	2,493	1,480	2,493
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	0	0	(1)	0
Available-For-Sale Mortgage-Related Securities [Member] | Manufactured housing
Assets:
Beginning Balance	614	668	638	684
Included in Earnings	0	0	(1)	0
Included in Other Comprehensive Income	(3)	0	8	21
Total realized and unrealized gains (losses)	(3)	0	7	21
Purchases	0	0	0	0
Issues	0	0	0	0
Sales	0	0	(1)	0
Settlements, net	(17)	(18)	(50)	(55)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending Balance	594	650	594	650
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	0	0	80	0
Trading Mortgage Related Securities [Member]
Assets:
Beginning Balance	519	1,425	1,164	646
Included in Earnings	(35)	39	(33)	5
Included in Other Comprehensive Income	0	0	0	0
Total realized and unrealized gains (losses)	(35)	39	(33)	5
Purchases	212	915	212	2,078
Issues	0	7	0	42
Sales	(1)	(443)	(109)	(1,550)
Settlements, net	(3)	(18)	(8)	(47)
Transfers into Level 3	28	15	26	0
Transfers out of Level 3	(233)	(864)	(765)	(98)
Ending Balance	487	1,076	487	1,076
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	(35)	40	(48)	7
Trading Mortgage Related Securities [Member] | Freddie Mac
Assets:
Beginning Balance	345	1,252	927	343
Included in Earnings	(29)	41	(40)	26
Included in Other Comprehensive Income	0	0	0	0
Total realized and unrealized gains (losses)	(29)	41	(40)	26
Purchases	212	915	212	2,064
Issues	0	7	0	42
Sales	0	(443)	(10)	(1,480)
Settlements, net	(2)	(13)	(6)	(33)
Transfers into Level 3	28	0	26	0
Transfers out of Level 3	(111)	(864)	(666)	(67)
Ending Balance	443	895	443	895
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	(29)	42	(40)	30
Trading Mortgage Related Securities [Member] | Fannie Mae
Assets:
Beginning Balance	171	167	232	221
Included in Earnings	(6)	(2)	4	(20)
Included in Other Comprehensive Income	0	0	0	0
Total realized and unrealized gains (losses)	(6)	(2)	4	(20)
Purchases	0	0	0	14
Issues	0	0	0	0
Sales	(1)	0	(95)	0
Settlements, net	0	(3)	0	(7)
Transfers into Level 3	0	15	0	0
Transfers out of Level 3	(122)	0	(99)	(31)
Ending Balance	42	177	42	177
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	(6)	(2)	(8)	(20)
Trading Mortgage Related Securities [Member] | Ginnie Mae
Assets:
Beginning Balance	0	0	1	74
Included in Earnings	0	0	0	0
Included in Other Comprehensive Income	0	0	0	0
Total realized and unrealized gains (losses)	0	0	0	0
Purchases	0	0	0	0
Issues	0	0	0	0
Sales	0	0	(1)	(70)
Settlements, net	0	0	0	(4)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending Balance	0	0	0	0
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	0	0	0	(2)
Trading Mortgage Related Securities [Member] | Other
Assets:
Beginning Balance	3	6	4	8
Included in Earnings	0	0	3	(1)
Included in Other Comprehensive Income	0	0	0	0
Total realized and unrealized gains (losses)	0	0	3	(1)
Purchases	0	0	0	0
Issues	0	0	0	0
Sales	0	0	(3)	0
Settlements, net	(1)	(2)	(2)	(3)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending Balance	2	4	2	4
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	0	0	0	(1)
Other Asset [Member]
Assets:
Beginning Balance	1,659	1,599	1,631	1,620
Included in Earnings	(13)	(45)	(35)	(147)
Included in Other Comprehensive Income	0	0	0	0
Total realized and unrealized gains (losses)	(13)	(45)	(35)	(147)
Purchases	0	0	0	0
Issues	131	142	457	290
Sales	0	0	0	0
Settlements, net	(173)	(118)	(449)	(185)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending Balance	1,604	1,578	1,604	1,578
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	(6)	(45)	(30)	(146)
Guarantee Asset [Member]
Assets:
Beginning Balance	1,652	1,587	1,626	1,611
Included in Earnings	(6)	(41)	(30)	(146)
Included in Other Comprehensive Income	0	0	0	0
Total realized and unrealized gains (losses)	(6)	(41)	(30)	(146)
Purchases	0	0	0	0
Issues	131	142	457	290
Sales	0	0	0	0
Settlements, net	(173)	(118)	(449)	(185)
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending Balance	1,604	1,570	1,604	1,570
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	(6)	(41)	(30)	(145)
All Other Assets [Member]
Assets:
Beginning Balance	7	12	5	9
Included in Earnings	(7)	(4)	(5)	(1)
Included in Other Comprehensive Income	0	0	0	0
Total realized and unrealized gains (losses)	(7)	(4)	(5)	(1)
Purchases	0	0	0	0
Issues	0	0	0	0
Sales	0	0	0	0
Settlements, net	0	0	0	0
Transfers into Level 3	0	0	0	0
Transfers out of Level 3	0	0	0	0
Ending Balance	0	8	0	8
Unrealized Gains (Losses) Still Held:
Unrealized Gains (Losses) Still Held - Assets	$ 0	$ (4)	$ 0	$ (1)

Fair Value Disclosures - Asse94

Fair Value Disclosures - Assets on Our Consolidated Balance Sheets Measured at Fair Value on a Non-Recurring Basis (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Assets, Fair Value Disclosure [Abstract]
Mortgage loans	$ 6,965	$ 9,042
REO, net	1,240	1,665
Total Assets at Fair value	8,205	10,707
Carrying Amount Of REO Written Down To Fair Value	1,100	1,600
Estimated Cost To Sell	81	109
Fair Value, Inputs, Level 1 [Member]
Assets, Fair Value Disclosure [Abstract]
Mortgage loans	0	0
REO, net	0	0
Total Assets at Fair value	0	0
Fair Value, Inputs, Level 2 [Member]
Assets, Fair Value Disclosure [Abstract]
Mortgage loans	926	80
REO, net	0	0
Total Assets at Fair value	926	80
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Mortgage loans	6,039	8,962
REO, net	1,240	1,665
Total Assets at Fair value	$ 7,279	$ 10,627

Fair Value Disclosures - Quanti

Fair Value Disclosures - Quantitative Information about Recurring Level 3 Fair Value Measurements for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value (Details) - Fair Value, Measurements, Recurring [Member] - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	$ 81,573,000,000	$ 106,550,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	35,806,000,000	30,437,000,000
Investments, Fair Value Disclosure	117,379,000,000	136,987,000,000
Other assets:
Guarantee Assets Fair Value Disclosure	1,604,000,000	1,626,000,000
All Other Assets		5,000,000
Total other assets		1,631,000,000
Liabilities [Abstract]
Net Derivative Liability (Asset)	1,065,000,000	1,141,000,000
All Other Liabilities	7,000,000
Mortgage-related securities
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	81,573,000,000	106,550,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	23,648,000,000	23,755,000,000
Investments, Fair Value Disclosure	105,221,000,000	130,305,000,000
Freddie Mac
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	35,577,000,000	39,099,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	16,324,000,000	17,469,000,000
Fannie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	7,836,000,000	11,313,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	6,887,000,000	6,099,000,000
Ginnie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	173,000,000	199,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	290,000,000	16,000,000
CMBS
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	14,576,000,000	21,822,000,000
Subprime
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	13,809,000,000	20,589,000,000
Option ARM
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,882,000,000	5,649,000,000
Alt-A and other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,646,000,000	5,043,000,000
Obligations of states and political subdivisions
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	1,480,000,000	2,198,000,000
Manufactured housing
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	594,000,000	638,000,000
Other
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	147,000,000	171,000,000
Fair Value, Inputs, Level 3 [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	30,098,000,000	41,895,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	487,000,000	1,164,000,000
Investments, Fair Value Disclosure	30,585,000,000	43,059,000,000
Other assets:
Guarantee Assets Fair Value Disclosure	1,604,000,000	1,626,000,000
All Other Assets		5,000,000
Total other assets		1,631,000,000
Liabilities [Abstract]
All Other Liabilities	7,000,000
Fair Value, Inputs, Level 3 [Member] | Net Derivatives [Member]
Liabilities [Abstract]
Net Derivative Liability (Asset)	23,000,000	10,000,000
Fair Value, Inputs, Level 3 [Member] | Net Derivatives [Member] | Other
Liabilities [Abstract]
Net Derivative Liability (Asset)	23,000,000	10,000,000
Fair Value, Inputs, Level 3 [Member] | All Other Liabilities [Member]
Liabilities [Abstract]
All Other Liabilities	7,000,000
Fair Value, Inputs, Level 3 [Member] | All Other Liabilities [Member] | Other
Liabilities [Abstract]
All Other Liabilities	7,000,000
Fair Value, Inputs, Level 3 [Member] | Mortgage-related securities
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	30,098,000,000	41,895,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	487,000,000	1,164,000,000
Investments, Fair Value Disclosure	30,585,000,000	43,059,000,000
Fair Value, Inputs, Level 3 [Member] | Freddie Mac
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,004,000,000	4,231,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	443,000,000	927,000,000
Fair Value, Inputs, Level 3 [Member] | Freddie Mac | Risk Metric [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	338,000,000	375,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	149,000,000	320,000,000
Fair Value, Inputs, Level 3 [Member] | Freddie Mac | Median of External Sources [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure		143,000,000
Fair Value, Inputs, Level 3 [Member] | Freddie Mac | Discounted Cash Flows [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	2,336,000,000	2,980,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	266,000,000	478,000,000
Fair Value, Inputs, Level 3 [Member] | Freddie Mac | Other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	330,000,000	733,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	28,000,000	129,000,000
Fair Value, Inputs, Level 3 [Member] | Fannie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	57,000,000	85,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	42,000,000	232,000,000
Fair Value, Inputs, Level 3 [Member] | Fannie Mae | Median of External Sources [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure		47,000,000
Fair Value, Inputs, Level 3 [Member] | Fannie Mae | Single External Source [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	38,000,000
Fair Value, Inputs, Level 3 [Member] | Fannie Mae | Discounted Cash Flows [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	19,000,000	29,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	42,000,000	207,000,000
Fair Value, Inputs, Level 3 [Member] | Fannie Mae | Other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure		9,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure		25,000,000
Fair Value, Inputs, Level 3 [Member] | Ginnie Mae
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	2,000,000	4,000,000
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	0	1,000,000
Fair Value, Inputs, Level 3 [Member] | Ginnie Mae | Discounted Cash Flows [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	2,000,000	4,000,000
Fair Value, Inputs, Level 3 [Member] | CMBS
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,638,000,000	3,474,000,000
Fair Value, Inputs, Level 3 [Member] | CMBS | Risk Metric [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,638,000,000	2,726,000,000
Fair Value, Inputs, Level 3 [Member] | CMBS | Discounted Cash Flows [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure		748,000,000
Fair Value, Inputs, Level 3 [Member] | Subprime
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	13,809,000,000	20,589,000,000
Fair Value, Inputs, Level 3 [Member] | Subprime | Median of External Sources [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	13,447,000,000	18,789,000,000
Fair Value, Inputs, Level 3 [Member] | Subprime | Other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	362,000,000	1,800,000,000
Fair Value, Inputs, Level 3 [Member] | Option ARM
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,882,000,000	5,649,000,000
Fair Value, Inputs, Level 3 [Member] | Option ARM | Median of External Sources [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,556,000,000	5,205,000,000
Fair Value, Inputs, Level 3 [Member] | Option ARM | Other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	326,000,000	444,000,000
Fair Value, Inputs, Level 3 [Member] | Alt-A and other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	3,632,000,000	5,027,000,000
Fair Value, Inputs, Level 3 [Member] | Alt-A and other | Median of External Sources [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	2,908,000,000	4,116,000,000
Fair Value, Inputs, Level 3 [Member] | Alt-A and other | Other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	724,000,000	911,000,000
Fair Value, Inputs, Level 3 [Member] | Obligations of states and political subdivisions
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	1,480,000,000	2,198,000,000
Fair Value, Inputs, Level 3 [Member] | Obligations of states and political subdivisions | Median of External Sources [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	1,331,000,000	1,992,000,000
Fair Value, Inputs, Level 3 [Member] | Obligations of states and political subdivisions | Other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	149,000,000	206,000,000
Fair Value, Inputs, Level 3 [Member] | Manufactured housing
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	594,000,000	638,000,000
Fair Value, Inputs, Level 3 [Member] | Manufactured housing | Median of External Sources [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	523,000,000	515,000,000
Fair Value, Inputs, Level 3 [Member] | Manufactured housing | Single External Source [Member]
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure		123,000,000
Fair Value, Inputs, Level 3 [Member] | Manufactured housing | Other
Available-For-Sale, at Fair Value:
Available-for-sale Securities, Fair Value Disclosure	71,000,000
Fair Value, Inputs, Level 3 [Member] | Other
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	2,000,000	4,000,000
Fair Value, Inputs, Level 3 [Member] | Other | Median of External Sources [Member]
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	1,000,000	3,000,000
Fair Value, Inputs, Level 3 [Member] | Other | Discounted Cash Flows [Member]
Trading, at Fair Value:
Trading Securities, Fair Value Disclosure	$ 1,000,000	$ 1,000,000
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Freddie Mac | Weighted Average [Member] | Risk Metric [Member]
Fair Value Inputs, Quantitative Information [Abstract]
Effective Duration	2 years 1 month 28 days	3 years 9 months 26 days
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Freddie Mac | Weighted Average [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)		$ 103.8
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Freddie Mac | Weighted Average [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS	0.89%	0.83%
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Freddie Mac | Minimum [Member] | Risk Metric [Member]
Fair Value Inputs, Quantitative Information [Abstract]
Effective Duration		2 months 5 days
Effective Duration (Past Years)	5 months 9 days
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Freddie Mac | Minimum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)		$ 103.2
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Freddie Mac | Minimum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS	(0.46%)	(1.46%)
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Freddie Mac | Maximum [Member] | Risk Metric [Member]
Fair Value Inputs, Quantitative Information [Abstract]
Effective Duration	9 years 1 month 13 days	7 years 6 months 15 days
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Freddie Mac | Maximum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)		$ 104.4
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Freddie Mac | Maximum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS	5.03%	1.44%
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | CMBS | Weighted Average [Member] | Risk Metric [Member]
Fair Value Inputs, Quantitative Information [Abstract]
Effective Duration	9 years 9 months 7 days	9 years 7 months 2 days
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | CMBS | Weighted Average [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS		4.21%
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | CMBS | Minimum [Member] | Risk Metric [Member]
Fair Value Inputs, Quantitative Information [Abstract]
Effective Duration	3 years 4 months 24 days	5 years 10 months 2 days
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | CMBS | Minimum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS		1.81%
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | CMBS | Maximum [Member] | Risk Metric [Member]
Fair Value Inputs, Quantitative Information [Abstract]
Effective Duration	11 years 3 months 7 days	10 years 7 months 24 days
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | CMBS | Maximum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS		7.66%
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Subprime | Weighted Average [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	$ 74.4	$ 73.5
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Subprime | Minimum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	72.4	71
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Subprime | Maximum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	76.6	76.1
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Option ARM | Weighted Average [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	69.6	67.9
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Option ARM | Minimum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	67.3	65.3
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Option ARM | Maximum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	73.5	70.9
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Alt-A and other | Weighted Average [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	86.5	84.5
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Alt-A and other | Minimum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	84.9	83
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Alt-A and other | Maximum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	88.2	86.2
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Obligations of states and political subdivisions | Weighted Average [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	101.5	101.6
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Obligations of states and political subdivisions | Minimum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	101.3	101.3
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Obligations of states and political subdivisions | Maximum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	101.7	101.9
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Manufactured housing | Weighted Average [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	93	91
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Manufactured housing | Weighted Average [Member] | Single External Source [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)		89.8
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Manufactured housing | Minimum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	91.4	89.3
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Manufactured housing | Minimum [Member] | Single External Source [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)		89.8
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Manufactured housing | Maximum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)	$ 94.8	92.4
Fair Value, Inputs, Level 3 [Member] | Available-For-Sale Mortgage-Related Securities [Member] | Manufactured housing | Maximum [Member] | Single External Source [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)		$ 89.8
Fair Value, Inputs, Level 3 [Member] | Trading Mortgage Related Securities [Member] | Freddie Mac | Weighted Average [Member] | Risk Metric [Member]
Fair Value Inputs, Quantitative Information [Abstract]
Effective Duration	7 years 3 months 29 days	2 years 3 months 7 days
Fair Value, Inputs, Level 3 [Member] | Trading Mortgage Related Securities [Member] | Freddie Mac | Weighted Average [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS	1.92%	1.69%
Fair Value, Inputs, Level 3 [Member] | Trading Mortgage Related Securities [Member] | Freddie Mac | Minimum [Member] | Risk Metric [Member]
Fair Value Inputs, Quantitative Information [Abstract]
Effective Duration	2 years 26 days	1 year 9 months 11 days
Fair Value, Inputs, Level 3 [Member] | Trading Mortgage Related Securities [Member] | Freddie Mac | Minimum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS	(1.45%)	(2.19%)
Fair Value, Inputs, Level 3 [Member] | Trading Mortgage Related Securities [Member] | Freddie Mac | Maximum [Member] | Risk Metric [Member]
Fair Value Inputs, Quantitative Information [Abstract]
Effective Duration	14 years 8 months 19 days	2 years 3 months 18 days
Fair Value, Inputs, Level 3 [Member] | Trading Mortgage Related Securities [Member] | Freddie Mac | Maximum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS	15.42%	97.48%
Fair Value, Inputs, Level 3 [Member] | Trading Mortgage Related Securities [Member] | Fannie Mae | Weighted Average [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS		2.04%
Fair Value, Inputs, Level 3 [Member] | Trading Mortgage Related Securities [Member] | Fannie Mae | Minimum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS		(1.73%)
Fair Value, Inputs, Level 3 [Member] | Trading Mortgage Related Securities [Member] | Fannie Mae | Maximum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS		20.27%
Fair Value, Inputs, Level 3 [Member] | Other Asset [Member]
Other assets:
Total other assets		$ 1,631,000,000
Fair Value, Inputs, Level 3 [Member] | Guarantee Asset [Member]
Other assets:
Guarantee Assets Fair Value Disclosure	$ 1,604,000,000	1,626,000,000
Fair Value, Inputs, Level 3 [Member] | Guarantee Asset [Member] | Median of External Sources [Member]
Other assets:
Guarantee Assets Fair Value Disclosure		341,000,000
Fair Value, Inputs, Level 3 [Member] | Guarantee Asset [Member] | Discounted Cash Flows [Member]
Other assets:
Guarantee Assets Fair Value Disclosure	1,494,000,000	1,285,000,000
Fair Value, Inputs, Level 3 [Member] | Guarantee Asset [Member] | Other
Other assets:
Guarantee Assets Fair Value Disclosure	$ 110,000,000
Fair Value, Inputs, Level 3 [Member] | Guarantee Asset [Member] | Weighted Average [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)		$ 16.6
Fair Value, Inputs, Level 3 [Member] | Guarantee Asset [Member] | Weighted Average [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS	0.56%	0.53%
Fair Value, Inputs, Level 3 [Member] | Guarantee Asset [Member] | Minimum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)		$ 10
Fair Value, Inputs, Level 3 [Member] | Guarantee Asset [Member] | Minimum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS	0.17%	0.17%
Fair Value, Inputs, Level 3 [Member] | Guarantee Asset [Member] | Maximum [Member] | Median of External Sources [Member]
Fair Value Inputs, Quantitative Information [Abstract]
External Pricing Source(s)		$ 21.2
Fair Value, Inputs, Level 3 [Member] | Guarantee Asset [Member] | Maximum [Member] | Discounted Cash Flows [Member]
Fair Value Inputs, Quantitative Information [Abstract]
OAS	1.98%	2.02%
Fair Value, Inputs, Level 3 [Member] | All Other Assets [Member]
Other assets:
All Other Assets		$ 5,000,000
Fair Value, Inputs, Level 3 [Member] | All Other Assets [Member] | Other
Other assets:
All Other Assets		$ 5,000,000

Fair Value Disclosures Fair Val

Fair Value Disclosures Fair Value Disclosures - Quantitative Information about Non-Recurring Level 3 Fair Value Measurements for Assets and Liabilities Measured on Our Consolidated Balance Sheets at Fair Value (Details) - Fair Value, Measurements, Nonrecurring [Member] - USD ($)	9 Months Ended	12 Months Ended
	Sep. 30, 2015	Dec. 31, 2014
Assets, Fair Value Disclosure [Abstract]
Mortgage Loans Fair Value Disclosure	$ 6,965,000,000	$ 9,042,000,000
Reo Net Fair Value Disclosure	1,240,000,000	1,665,000,000
Mortgage loans [Member]
Assets, Fair Value Disclosure [Abstract]
Mortgage Loans Fair Value Disclosure	6,965,000,000	8,962,000,000
Reo Net At Fair Value [Member]
Assets, Fair Value Disclosure [Abstract]
Reo Net Fair Value Disclosure	1,240,000,000	1,665,000,000
Fair Value, Inputs, Level 3 [Member]
Assets, Fair Value Disclosure [Abstract]
Mortgage Loans Fair Value Disclosure	6,039,000,000	8,962,000,000
Reo Net Fair Value Disclosure	1,240,000,000	1,665,000,000
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member]
Assets, Fair Value Disclosure [Abstract]
Mortgage Loans Fair Value Disclosure	$ 6,039,000,000	$ 8,962,000,000
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Minimum [Member] | Income Capitalization [Member]
Assets, Fair Value Disclosure [Abstract]
Capitalization rates	6.00%	6.00%
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Minimum [Member] | Third-Party Appraisal [Member]
Assets, Fair Value Disclosure [Abstract]
Property Value	$ 1,000,000	$ 11,000,000
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Minimum [Member] | Internal Model [Member]
Assets, Fair Value Disclosure [Abstract]
Fair Value Inputs Historical Sale Proceeds	$ 3,000	$ 3,000
Housing Sales Index	0.42%	0.38%
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Minimum [Member] | Median of External Sources [Member]
Assets, Fair Value Disclosure [Abstract]
External Pricing Source(s)	$ 39.5
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Maximum [Member] | Income Capitalization [Member]
Assets, Fair Value Disclosure [Abstract]
Capitalization rates	9.00%	9.00%
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Maximum [Member] | Third-Party Appraisal [Member]
Assets, Fair Value Disclosure [Abstract]
Property Value	$ 30,000,000	$ 44,000,000
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Maximum [Member] | Internal Model [Member]
Assets, Fair Value Disclosure [Abstract]
Fair Value Inputs Historical Sale Proceeds	$ 854,400	$ 896,519
Housing Sales Index	4.18%	2.94%
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Maximum [Member] | Median of External Sources [Member]
Assets, Fair Value Disclosure [Abstract]
External Pricing Source(s)	$ 95.4
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Weighted Average [Member] | Income Capitalization [Member]
Assets, Fair Value Disclosure [Abstract]
Capitalization rates	7.00%	7.00%
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Weighted Average [Member] | Third-Party Appraisal [Member]
Assets, Fair Value Disclosure [Abstract]
Property Value	$ 28,000,000	$ 31,000,000
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Weighted Average [Member] | Internal Model [Member]
Assets, Fair Value Disclosure [Abstract]
Fair Value Inputs Historical Sale Proceeds	$ 165,048	$ 162,556
Housing Sales Index	0.87%	0.82%
Fair Value, Inputs, Level 3 [Member] | Mortgage loans [Member] | Weighted Average [Member] | Median of External Sources [Member]
Assets, Fair Value Disclosure [Abstract]
External Pricing Source(s)	$ 72
Fair Value, Inputs, Level 3 [Member] | Reo Net At Fair Value [Member] | Internal Model [Member]
Assets, Fair Value Disclosure [Abstract]
Reo Net Fair Value Disclosure	1,240,000,000	$ 1,665,000,000
Fair Value, Inputs, Level 3 [Member] | Reo Net At Fair Value [Member] | Minimum [Member] | Internal Model [Member]
Assets, Fair Value Disclosure [Abstract]
Fair Value Inputs Historical Sale Proceeds	$ 3,000	$ 3,008
Housing Sales Index	0.44%	0.38%
Fair Value, Inputs, Level 3 [Member] | Reo Net At Fair Value [Member] | Maximum [Member] | Internal Model [Member]
Assets, Fair Value Disclosure [Abstract]
Fair Value Inputs Historical Sale Proceeds	$ 626,005	$ 896,519
Housing Sales Index	4.18%	2.94%
Fair Value, Inputs, Level 3 [Member] | Reo Net At Fair Value [Member] | Weighted Average [Member] | Internal Model [Member]
Assets, Fair Value Disclosure [Abstract]
Fair Value Inputs Historical Sale Proceeds	$ 154,140	$ 154,165
Housing Sales Index	0.86%	0.82%

Fair Value Disclosures - Fair V

Fair Value Disclosures - Fair Value of Financial Instruments (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Mortgage loans:
Derivative assets, net	$ 605	$ 822
Netting Adjustment	(9,987)	(9,122)
Advances To Lenders	858	0
Debt, net:
Derivative liabilities, net	1,670	1,963
Netting Adjustment	(13,536)	(11,597)
Held by consolidated trusts
Debt, net:
Debt, Net	131	42
Freddie Mac parent
Debt, net:
Debt, Net	7,379	5,820
GAAP Carrying Amount
Financial Assets
Cash and Cash Equivalents	5,000	10,928
Restricted Cash and Cash Equivalents	15,108	8,535
Federal Funds Sold and Securities Purchased under Agreements to Resell	38,738	51,903
Investments in Securities [Abstract]
Available-for-sale, at fair value	81,573	106,550
Trading, at fair value	35,806	30,437
Total investments in securities	117,379	136,987
Mortgage loans:
Mortgage loans	1,749,867	1,700,580
Derivative assets, net	605	822
Guarantee Assets	1,604	1,626
Advances To Lenders	858
Total Financial Assets	1,929,159	1,911,381
Debt, net:
Debt, Net	1,947,389	1,929,542
Derivative liabilities, net	1,670	1,963
Guarantee obligation	1,573	1,623
Total Financial Liabilities	1,950,632	1,933,128
GAAP Carrying Amount | Held by consolidated trusts
Mortgage loans:
Mortgage loans	1,615,291	1,558,094
Debt, net:
Debt, Net	1,539,108	1,479,473
GAAP Carrying Amount | Freddie Mac parent
Mortgage loans:
Mortgage loans	134,576	142,486
Debt, net:
Debt, Net	408,281	450,069
Fair Value
Financial Assets
Cash and Cash Equivalents	5,000	10,928
Restricted Cash and Cash Equivalents	15,108	8,535
Federal Funds Sold and Securities Purchased under Agreements to Resell	38,738	51,903
Investments in Securities [Abstract]
Available-for-sale, at fair value	81,573	106,550
Trading, at fair value	35,806	30,437
Total investments in securities	117,379	136,987
Mortgage loans:
Mortgage loans	1,780,635	1,726,770
Derivative assets, net	605	822
Guarantee Assets	1,812	1,837
Advances To Lenders	858
Total Financial Assets	1,960,135	1,937,782
Debt, net:
Debt, Net	2,040,085	1,980,991
Derivative liabilities, net	1,670	1,963
Guarantee obligation	2,995	3,127
Total Financial Liabilities	2,044,750	1,986,081
Fair Value | Held by consolidated trusts
Mortgage loans:
Mortgage loans	1,643,757	1,585,308
Debt, net:
Debt, Net	1,624,279	1,522,872
Fair Value | Freddie Mac parent
Mortgage loans:
Mortgage loans	136,878	141,462
Debt, net:
Debt, Net	415,806	458,119
Fair Value | Level 1
Financial Assets
Cash and Cash Equivalents	5,000	10,928
Restricted Cash and Cash Equivalents	15,108	8,535
Federal Funds Sold and Securities Purchased under Agreements to Resell	0	0
Investments in Securities [Abstract]
Available-for-sale, at fair value	0	0
Trading, at fair value	12,158	6,682
Total investments in securities	12,158	6,682
Mortgage loans:
Mortgage loans	0	0
Derivative assets, net	0	5
Guarantee Assets	0	0
Advances To Lenders	0
Total Financial Assets	32,266	26,150
Debt, net:
Debt, Net	0	0
Derivative liabilities, net	0	28
Guarantee obligation	0	0
Total Financial Liabilities	0	28
Fair Value | Level 1 | Held by consolidated trusts
Mortgage loans:
Mortgage loans	0	0
Debt, net:
Debt, Net	0	0
Fair Value | Level 1 | Freddie Mac parent
Mortgage loans:
Mortgage loans	0	0
Debt, net:
Debt, Net	0	0
Fair Value | Level 2
Financial Assets
Cash and Cash Equivalents	0	0
Restricted Cash and Cash Equivalents	0	0
Federal Funds Sold and Securities Purchased under Agreements to Resell	38,738	51,903
Investments in Securities [Abstract]
Available-for-sale, at fair value	51,475	64,655
Trading, at fair value	23,161	22,591
Total investments in securities	74,636	87,246
Mortgage loans:
Mortgage loans	1,502,925	1,409,717
Derivative assets, net	10,573	9,912
Guarantee Assets	0	0
Advances To Lenders	858
Total Financial Assets	1,627,730	1,558,778
Debt, net:
Debt, Net	2,028,341	1,966,256
Derivative liabilities, net	15,164	13,495
Guarantee obligation	0	0
Total Financial Liabilities	2,043,505	1,979,751
Fair Value | Level 2 | Held by consolidated trusts
Mortgage loans:
Mortgage loans	1,467,806	1,387,412
Debt, net:
Debt, Net	1,623,303	1,521,508
Fair Value | Level 2 | Freddie Mac parent
Mortgage loans:
Mortgage loans	35,119	22,305
Debt, net:
Debt, Net	405,038	444,748
Fair Value | Level 3
Financial Assets
Cash and Cash Equivalents	0	0
Restricted Cash and Cash Equivalents	0	0
Federal Funds Sold and Securities Purchased under Agreements to Resell	0	0
Investments in Securities [Abstract]
Available-for-sale, at fair value	30,098	41,895
Trading, at fair value	487	1,164
Total investments in securities	30,585	43,059
Mortgage loans:
Mortgage loans	277,710	317,053
Derivative assets, net	19	27
Guarantee Assets	1,812	1,837
Advances To Lenders	0
Total Financial Assets	310,126	361,976
Debt, net:
Debt, Net	11,744	14,735
Derivative liabilities, net	42	37
Guarantee obligation	2,995	3,127
Total Financial Liabilities	14,781	17,899
Fair Value | Level 3 | Held by consolidated trusts
Mortgage loans:
Mortgage loans	175,951	197,896
Debt, net:
Debt, Net	976	1,364
Fair Value | Level 3 | Freddie Mac parent
Mortgage loans:
Mortgage loans	101,759	119,157
Debt, net:
Debt, Net	$ 10,768	$ 13,371

Fair Value Disclosures - Differ

Fair Value Disclosures - Difference between Fair Value and Unpaid Principal Balance for Certain Financial Instruments with Fair Value Option Elected (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Fair Value Disclosures [Abstract]
Loans Held For Sale, Fair Value	$ 20,880	$ 12,130
Loans Held For Sale, Unpaid Principal Balance, With Fair Value Option Elected	20,603	11,872
Fair Value, Option, Aggregate Differences, Loans and Long-term Receivables	277	258
Long-Term Debt, Fair Value	7,379	5,820
Long-Term Debt, Unpaid Principal Balance, with Fair Value Option Elected	7,378	5,896
Fair Value, Option, Aggregate Differences, Long-term Debt Instruments	$ 1	$ (76)

Legal Contingencies (Details)

Legal Contingencies (Details)	Dec. 29, 2014USD ($)	Sep. 15, 2014USD ($)	Mar. 14, 2013numberofdefendants	May. 14, 2010USD ($)	Sep. 20, 2013USD ($)
Lloyds [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 111,000,000
Deloitte & Touche LLP
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value		$ 1,300,000,000
LIBOR Lawsuit
Loss Contingencies [Line Items]
Number of defendants | numberofdefendants			16
Arrowood lawsuit | Arrowood Indemnity Company
Loss Contingencies [Line Items]
Preferred Stock, Value, Outstanding					$ 42,000,000
Unasserted claim | TBW Bankruptcy, Underwriters
Loss Contingencies [Line Items]
Amount of mortgage bankers bonds to be rescinded				$ 90,000,000

Regulatory Capital (Details)

Regulatory Capital (Details) - USD ($)	3 Months Ended			9 Months Ended
	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2008
Mortgage Banking [Abstract]
Expected Draw Request To Treasury Under Purchase Agreement	$ 0			$ 0
Aggregate Funding Received From Treasury Under Purchase Agreement	71,300,000,000			71,300,000,000
Initial liquidation preference of senior preferred stock						$ 1,000,000,000
Cash amount received as a result of issuing the initial liquidation preference						$ 0
Cash dividends paid on senior preferred stock	$ 3,900,000,000	$ 700,000,000	$ 900,000,000	$ 5,510,000,000	$ 16,824,000,000

Regulatory Capital Regulatory C

Regulatory Capital Regulatory Capital - Net Worth and Minimum Capital (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Net Worth and Minimum Capital [Abstract]
GAAP net worth (deficit)	$ 1,299	$ 2,651
Core capital (deficit)	(72,707)	(71,415)
Minimum capital requirement	19,364	20,090
Minimum capital surplus (deficit)	$ (92,071)	$ (91,505)

Selected Financial Statement102

Selected Financial Statement Line Items - Significant Components of Other Income (Loss) and Other Expense on Our Consolidated Statements of Comprehensive Income (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014	Sep. 30, 2015	Sep. 30, 2014
Other income (loss)
Non-agency mortgage-related securities settlements	$ 0	$ 1,187	$ 0	$ 6,084
Gains (losses) on mortgage loans	(197)	168	(1,321)	383
Other	322	441	889	862
Total other income (loss)	125	1,796	(432)	7,329
Other Expense
Property tax and insurance on held-for-sale loans	(176)	0	(937)	(62)
Other	(94)	(43)	(297)	(137)
Total other expense	$ (270)	$ (43)	$ (1,234)	$ (199)

Selected Financial Statement103

Selected Financial Statement Line Items - Significant Components of Other Assets and Other Liabilities on Our Consolidated Balance Sheets (Details) - USD ($) $ in Millions	Sep. 30, 2015	Dec. 31, 2014
Other assets:
Accounts and other receivables	$ 4,527	$ 3,899
Current income tax receivable	1,718	1,048
Guarantee asset	1,604	1,626
Advances To Lenders	858	0
All other	1,079	1,121
Total other assets	9,786	7,694
Other liabilities:
Servicer liabilities	1,427	1,847
Guarantee obligation	1,573	1,623
Accounts payable and accrued expenses	1,347	803
All other	1,307	785
Total other liabilities	$ 5,654	$ 5,058