Condensed Consolidated Statements of Cash Flows (Unaudited) (USD $) In Millions, unless otherwise specified	6 Months Ended
	Jun. 30, 2014	Jun. 30, 2013
Net cash provided by operating activities
Net cash provided by operating activities	$ 3,420	$ 4,802
Cash flows provided by investing activities:
Purchases of trading securities held for investment	0	(3,985)
Proceeds from maturities and paydowns of trading securities held for investment	681	1,293
Proceeds from sales of trading securities held for investment	1,188	4,469
Proceeds from maturities and paydowns of available-for-sale securities	3,022	5,861
Proceeds from sales of available-for-sale securities	1,740	2,021
Purchases of loans held for investment	(55,843)	(119,122)
Net change in restricted cash	(592)	13,989
Advances to lenders	(42,545)	(76,435)
Proceeds from disposition of acquired property and preforeclosure sales	13,471	22,466
Net change in federal funds sold and securities purchased under agreements to resell or similar arrangements	22,275	(5,300)
Other, net	(349)	170
Net cash provided by investing activities	133,415	269,161
Cash flows used in financing activities:
Payments of cash dividends on senior preferred stock to Treasury	(12,882)	(63,592)
Other, net	(7)	(2)
Net cash used in financing activities	(135,216)	(270,362)
Net increase in cash and cash equivalents	1,619	3,601
Cash and cash equivalents at beginning of period	19,228	21,117
Cash and cash equivalents at end of period	20,847	24,718
Cash paid during the period for:
Interest	53,594	55,455
Income Taxes	2,475	1,016
Fannie Mae [Member]
Cash flows provided by investing activities:
Proceeds from repayments and sales of loans acquired as held for investment of Fannie Mae	12,840	28,762
Cash flows used in financing activities:
Proceeds from issuance of debt	165,337	248,901
Payments to redeem debt	(217,988)	(261,959)
Consolidated Trusts [Member]
Cash flows provided by investing activities:
Proceeds from repayments and sales of loans acquired as held for investment of consolidated trusts	177,527	394,972
Cash flows used in financing activities:
Proceeds from issuance of debt	113,448	235,835
Payments to redeem debt	$ (183,124)	$ (429,545)