Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions	6 Months Ended
Jun. 30, 2011	Jun. 30, 2010
Cash flows provided by (used in) operating activities:
Net cash provided by (used in) operating activities	$ (2,095)	$ (47,133)
Cash flows provided by investing activities:
Purchases of tradings securities held for investment	(545)	(7,887)
Proceeds from maturities and paydowns of trading securities held for investment	1,051	1,398
Proceeds from sales of trading securities held for investment	516	20,442
Purchases of available-for-sale securities	(44)	(142)
Proceeds from maturities and paydowns of available-for-sale securities	6,933	9,022
Proceeds from sales of available-for-sale securities	1,850	5,949
Purchases of loans held for investment	(26,000)	(25,743)
Net change in restricted cash	26,099	9,798
Advances to lenders (SCF)	(27,990)	(23,131)
Proceeds from disposition of acquired property and preforeclosure sales	24,142	17,693
Net change in federal funds sold and securities purchased under agreements to resell or similar arrangements	(7,749)	15,618
Other, net (investing)	(33)	(627)
Net cash provided by investing activities	236,162	250,958
Cash flows used in financing activities:
Payments of cash dividends on senior preferred stock to Treasury	(4,497)	(3,436)
Proceeds from senior preferred stock purchase agreement with Treasury	11,100	23,700
Net change in federal funds purchased and securities sold under agreements to repurchase		142
Other, net (financing)	109	(37)
Net cash used in financing activities	(237,090)	(182,793)
Net increase (decrease) in cash and cash equivalents	(3,023)	21,032
Cash and cash equivalents at beginning of period	17,297	6,812
Cash and cash equivalents at end of period	14,274	27,844
Cash paid during the period for:
Interest	65,710	73,272
Of Fannie Mae [Member]
Cash flows provided by investing activities:
Proceeds from repayments of loans held for investment	11,722	9,188
Cash flows used in financing activities:
Proceeds from issuance of debt	345,028	592,508
Payments to redeem debt	(401,125)	(519,120)
Of Consolidated Trusts [Member]
Cash flows provided by investing activities:
Proceeds from repayments of loans held for investment	226,210	219,380
Cash flows used in financing activities:
Proceeds from issuance of debt	117,760	135,809
Payments to redeem debt	(305,465)	(412,359)
Cash and cash equivalents at beginning of period	348
Cash and cash equivalents at end of period	$ 3

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Advances to lenders represent payments of cash in exchange for the receipt of mortgage loans from lenders in a transfer that is accounted for as a secured lending arrangement

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Represents the cash received from US Treasury pursuant to senior preferred purchase agreement attributed by our net worth deficit at prior quarter end

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Includes currency on hand as well as demand deposits with banks or financial institutions. It also includes other kinds of accounts that have the general characteristics of demand deposits in that the Entity may deposit additional funds at any time and also effectively may withdraw funds at any time without prior notice or penalty. Cash equivalents, excluding items classified as marketable securities, include short-term, highly liquid investments that are both readily convertible to known amounts of cash, and so near their maturity that they present minimal risk of changes in value because of changes in interest rates. Generally, only investments with original maturities of three months or less qualify under that definition. Original maturity means original maturity to the entity holding the investment. For example, both a three-month US Treasury bill and a three-year Treasury note purchased three months from maturity qualify as cash equivalents. However, a Treasury note purchased three years ago does not become a cash equivalent when its remaining maturity is three months. Compensating balance arrangements that do not legally restrict the withdrawal or usage of cash amounts may be reported as Cash and Cash Equivalents, while legally restricted deposits held as compensating balances against borrowing arrangements, contracts entered into with others, or company statements of intention with regard to particular deposits should not be reported as cash and cash equivalents.

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The net change between the beginning and ending balance of cash and cash equivalents.

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The net cash inflow (outflow) from the fund lent to other financial institution arising from the excess in reserve deposited at Federal Reserve Bank to meet legal requirement. This borrowing is usually contracted on an overnight basis at an agreed rate of interest. Also include cash inflow (outflow) from investment sold under the agreement to reacquire such investment.

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The net cash inflow (outflow) for the net change associated with funds that are not available for withdrawal or use (such as funds held in escrow) and are associated with underlying transactions that are classified as investing activities.

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The amount of cash paid during the current period for interest owed on money borrowed; includes amount of interest capitalized

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The net cash inflow (outflow) from financing activity for the period.

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The net cash inflow (outflow) from investing activity.

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The net cash from (used in) all of the entity's operating activities, including those of discontinued operations, of the reporting entity. Operating activities generally involve producing and delivering goods and providing services. Operating activity cash flows include transactions, adjustments, and changes in value that are not defined as investing or financing activities.

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Cash outflows related to operating activities.

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The net cash outflow (inflow) from other investing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash outflow to acquire debt securities classified as available-for-sale securities, because they are not classified as either held-to-maturity securities or trading securities.

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The cash outflow associated with purchasing loans held for investment purposes during the period.

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The cash outflow for securities or other assets acquired with excess cash, having ready marketability, which qualify for treatment as an investing activity based on management's intention and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

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The cash inflow associated maturities (principal being due), prepayments and calls (requests of early payments) on securities not classified as either held-to-maturity securities or trading securities which are classified as available-for-sale securities.

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The cash flow from the funds lent to and (borrowed from) other financial reporting institutions arising from excess or shortfall in reserve deposited at the Federal Reserve Bank to meet legal requirements. This lending and borrowing is usually contracted on an overnight basis at an agreed rate of interest. Also include cash outflow (inflow) from investments purchased under the agreement to resell such investment.

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The net cash inflow (outflow) from other financing activities. This element is used when there is not a more specific and appropriate element in the taxonomy.

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The cash inflow from repayments of the balance excluding interest (principal) on loans receivable and leases held for investment purposes.

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The cash inflow associated with the sale of debt securities classified as available-for-sale securities.

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The cash inflow from the sale assets received in full or partial satisfaction of a receivable including real and personal property; equity interests in corporations, partnerships, and joint ventures; and beneficial interests in trusts. Foreclosed assets also include loans that are treated as if the underlying collateral had been foreclosed because the institution has taken possession of the collateral, even though legal foreclosure or repossession proceedings have not taken place.

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The cash inflow from securities or other assets sold, having ready marketability and intended by management to be liquidated, if necessary, within the current operating cycle. Includes cash flows from securities classified as trading securities that were acquired for reasons other than sale in the short-term.

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