Condensed Consolidated Statements of Operations and Comprehensive Income (Unaudited) - USD ($) shares in Millions, $ in Millions	3 Months Ended		6 Months Ended
	Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
Interest income:
Trading securities	$ 116	$ 143	$ 231	$ 270
Available-for-sale securities	294	414	670	854
Mortgage loans (includes $24,267 and $25,533, respectively, for the three months ended and $48,889 and $51,487, respectively, for the six months ended related to consolidated trusts)	26,682	28,165	53,726	56,753
Other	34	24	67	48
Total interest income	27,126	28,746	54,694	57,925
Interest expense:
Short-term debt	33	21	62	41
Long-term debt (includes $19,528 and $21,692, respectively, for the three months ended and $40,043 and $43,768, respectively, for the six months ended related to consolidated trusts)	21,416	23,821	43,888	48,242
Total interest expense	21,449	23,842	43,950	48,283
Net interest income	5,677	4,904	10,744	9,642
(Provision) benefit for credit losses	(1,033)	1,639	(500)	2,413
Net interest income after (provision) benefit for credit losses	4,644	6,543	10,244	12,055
Investment gains, net	514	483	856	578
Fair value gains (losses), net	2,606	(934)	687	(2,124)
Debt extinguishment gains, net	3	38	11	38
Fee and other income	556	383	864	4,738
Non-interest income (loss)	3,679	(30)	2,418	3,230
Administrative expenses:
Salaries and employee benefits	331	319	682	644
Professional services	251	275	522	517
Occupancy expenses	43	47	86	97
Other administrative expenses	64	56	122	111
Total administrative expenses	689	697	1,412	1,369
Foreclosed property expense (income)	182	(214)	655	(476)
Temporary Payroll Tax Cut Continuation Act of 2011 (“TCCA”) fees	397	335	779	657
Other expenses, net	205	276	208	407
Total expenses	1,473	1,094	3,054	1,957
Income before federal income taxes	6,850	5,419	9,608	13,328
Provision for federal income taxes	(2,210)	(1,752)	(3,080)	(4,336)
Net income	4,640	3,667	6,528	8,992
Other comprehensive (loss) income:
Changes in unrealized gains on available-for-sale securities, net of reclassification adjustments and taxes	(280)	45	(371)	417
Other	(1)	0	(2)	0
Total other comprehensive (loss) income	(281)	45	(373)	417
Total comprehensive income	4,359	3,712	6,155	9,409
Less: Comprehensive income attributable to noncontrolling interest	0	(1)	0	(1)
Total comprehensive income attributable to Fannie Mae	4,359	3,711	6,155	9,408
Less: Net income attributable to noncontrolling interest	0	(1)	0	(1)
Net income attributable to Fannie Mae	4,640	3,666	6,528	8,991
Dividends distributed or available for distribution to senior preferred stockholder (Note 10)	(4,359)	(3,712)	(6,155)	(9,404)
Net income (loss) attributable to common stockholders (Note 10)	$ 281	$ (46)	$ 373	$ (413)
Earnings (loss) per share, Basic (in dollars per share)	$ 0.05	$ (0.01)	$ 0.06	$ (0.07)
Earnings (loss) per share, Diluted (in dollars per share)	$ 0.05	$ (0.01)	$ 0.06	$ (0.07)
Weighted-average common shares outstanding, Basic	5,762	5,762	5,762	5,762
Weighted-average common shares outstanding, Diluted	5,893	5,762	5,893	5,762