Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
Net cash provided by (used in) operating activities
Net cash provided by (used in) operating activities	$ (6,375)	$ 960
Cash flows provided by investing activities:
Proceeds from maturities and paydowns of trading securities held for investment	633	1,046
Proceeds from sales of trading securities held for investment	1,028	1,241
Proceeds from maturities and paydowns of available-for-sale securities	3,477	4,505
Proceeds from sales of available-for-sale securities	6,919	2,461
Purchases of loans held for investment	(146,577)	(93,029)
Net change in restricted cash	2,261	477
Advances to lenders	(92,345)	(71,268)
Proceeds from disposition of acquired property and preforeclosure sales	16,306	19,533
Net change in federal funds sold and securities purchased under agreements to resell or similar arrangements	4,350	9,525
Other, net	103	(178)
Net cash provided by investing activities	193,784	175,865
Cash flows used in financing activities:
Payments of cash dividends on senior preferred stock to Treasury	(8,075)	(16,594)
Other, net	68	25
Net cash used in financing activities	(189,517)	(179,724)
Net decrease in cash and cash equivalents	(2,108)	(2,899)
Cash and cash equivalents at beginning of period	22,023	19,228
Cash and cash equivalents at end of period	19,915	16,329
Cash paid during the period for:
Interest	78,584	81,947
Income Taxes	470	2,475
Fannie Mae [Member]
Cash flows provided by investing activities:
Proceeds from repayments and sales of loans acquired as held for investment of Fannie Mae	21,460	19,765
Cash flows used in financing activities:
Proceeds from issuance of debt	337,748	284,266
Payments to redeem debt	(381,487)	(339,528)
Consolidated Trusts [Member]
Cash flows provided by investing activities:
Proceeds from repayments and sales of loans acquired as held for investment of consolidated trusts	376,169	281,787
Cash flows used in financing activities:
Proceeds from issuance of debt	259,254	188,719
Payments to redeem debt	$ (397,025)	$ (296,612)