Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Net cash used in operating activities
Net cash used in operating activities	$ (4,749)	$ (6,375)
Cash flows provided by investing activities:
Proceeds from maturities and paydowns of trading securities held for investment	1,282	633
Proceeds from sales of trading securities held for investment	1,405	1,028
Proceeds from maturities and paydowns of available-for-sale securities	2,355	3,477
Proceeds from sales of available-for-sale securities	10,481	6,919
Purchases of loans held for investment	(168,729)	(146,577)
Net change in restricted cash	(12,047)	2,261
Advances to lenders	(96,797)	(92,345)
Proceeds from disposition of acquired property and preforeclosure sales	12,478	16,306
Net change in federal funds sold and securities purchased under agreements to resell or similar arrangements	9,000	4,350
Other, net	(305)	103
Net cash provided by investing activities	176,306	193,784
Cash flows used in financing activities:
Payments of cash dividends on senior preferred stock to Treasury	(6,647)	(8,075)
Other, net	(62)	68
Net cash used in financing activities	(159,672)	(189,517)
Net increase (decrease) in cash and cash equivalents	11,885	(2,108)
Cash and cash equivalents at beginning of period	14,674	22,023
Cash and cash equivalents at end of period	26,559	19,915
Cash paid during the period for:
Interest	78,281	78,584
Income taxes	1,141	470
Fannie Mae [Member]
Cash flows provided by investing activities:
Proceeds from repayments of loans acquired as held for investment	18,413	19,145
Proceeds from sales of loans acquired as held for investment of Fannie Mae	3,209	2,315
Cash flows used in financing activities:
Proceeds from issuance of debt	736,239	337,748
Payments to redeem debt	(772,380)	(381,487)
Consolidated Trusts [Member]
Cash flows provided by investing activities:
Proceeds from repayments of loans acquired as held for investment	395,561	376,169
Cash flows used in financing activities:
Proceeds from issuance of debt	290,146	259,254
Payments to redeem debt	$ (406,968)	$ (397,025)