Fair Value Level 3 Reconciliation (Details) (USD $) In Millions, unless otherwise specified	3 Months Ended				9 Months Ended
	Sep. 30, 2012		Sep. 30, 2011		Sep. 30, 2012		Sep. 30, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	$ 141		$ 196		$ (25)		$ 434
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	99		33		94		24
Interest Income [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	60		158		205		428
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0		(1)		0		(2)
Fair Value Losses, Net [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	117		98		237		82
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	99		34		94		26
Net Other-than-Temporary Impairments [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	(37)		(62)		(476)		(85)
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0		0		0		0
Other [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	1		2		9		9
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0		0		0		0
Trading securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	2,305		4,034		4,238		4,576
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	85		31		130		16
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	322	[2]	0	[2]	446	[2]
Sales	0	[2]	(3)	[2]	(33)	[2]	(18)	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(67)	[3]	(179)	[3]	(330)	[3]	(523)	[3]
Transfers out of Level 3	(54)	[4]	(261)	[4]	(2,060)	[4]	(661)	[4]
Transfers Into Level 3	304	[4]	201	[4]	628	[4]	309	[4]
Ending Balance	2,573		4,145		2,573		4,145
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	80	[5]	62	[5]	63	[5]	47	[5]
Trading securities [Member] | Fannie Mae [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	82		1,679		1,737		2,202
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	(1)		19		1		7
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	322	[2]	0	[2]	446	[2]
Sales	0	[2]	(3)	[2]	(33)	[2]	(18)	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(5)	[3]	(115)	[3]	(113)	[3]	(344)	[3]
Transfers out of Level 3	0	[4]	(41)	[4]	(1,581)	[4]	(432)	[4]
Transfers Into Level 3	0	[4]	0	[4]	65	[4]	0	[4]
Ending Balance	76		1,861		76		1,861
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	(1)	[5]	41	[5]	(3)	[5]	32	[5]
Trading securities [Member] | Ginnie Mae [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	0		0		9		0
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	0		0		0		0
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	0	[3]	0	[3]	0	[3]	0	[3]
Transfers out of Level 3	0	[4]	0	[4]	(9)	[4]	0	[4]
Transfers Into Level 3	1	[4]	36	[4]	1	[4]	36	[4]
Ending Balance	1		36		1		36
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0	[5]	0	[5]	0	[5]	0	[5]
Trading securities [Member] | Freddie Mac [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	2				0
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	0				0
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]			0	[1]
Purchases	0	[2]			0	[2]
Sales	0	[2]			0	[2]
Issues	0	[3]			0	[3]
Settlements	0	[3]			0	[3]
Transfers out of Level 3	0	[4]			0	[4]
Transfers Into Level 3	0	[4]			2	[4]
Ending Balance	2				2
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0	[5]			0	[5]
Trading securities [Member] | Alt-A private-label securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	188		126		345		20
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	12		7		81		8
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(19)	[3]	(13)	[3]	(86)	[3]	(14)	[3]
Transfers out of Level 3	(54)	[4]	(73)	[4]	(470)	[4]	(73)	[4]
Transfers Into Level 3	303	[4]	165	[4]	560	[4]	271	[4]
Ending Balance	430		212		430		212
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	7	[5]	10	[5]	19	[5]	12	[5]
Trading securities [Member] | Subprime private-label securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	1,226		1,459		1,280		1,581
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	78		(96)		100		(126)
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(39)	[3]	(45)	[3]	(115)	[3]	(137)	[3]
Transfers out of Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Transfers Into Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Ending Balance	1,265		1,318		1,265		1,318
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	78	[5]	(95)	[5]	99	[5]	(126)	[5]
Trading securities [Member] | Mortgage revenue bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	689		616		724		609
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	(5)		105		(31)		126
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(3)	[3]	(3)	[3]	(12)	[3]	(17)	[3]
Transfers out of Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Transfers Into Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Ending Balance	681		718		681		718
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	(5)	[5]	106	[5]	(31)	[5]	129	[5]
Trading securities [Member] | Other [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	118		154		143		152
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	1		(4)		(21)		1
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(1)	[3]	(3)	[3]	(4)	[3]	(6)	[3]
Transfers out of Level 3	0	[4]	(147)	[4]	0	[4]	(147)	[4]
Transfers Into Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Ending Balance	118		0		118		0
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	1	[5]	0	[5]	(21)	[5]	0	[5]
Trading securities [Member] | Asset-Backed Securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance							12
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)							0
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)							0	[1]
Purchases							0	[2]
Sales							0	[2]
Issues							0	[3]
Settlements							(5)	[3]
Transfers out of Level 3							(9)	[4]
Transfers Into Level 3							2	[4]
Ending Balance			0				0
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held							0	[5]
Available-for-sale securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	26,328		30,379		29,492		31,934
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	27		112		(253)		373
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	670	[1]	(45)	[1]	1,403	[1]	(155)	[1]
Purchases	64	[2]	853	[2]	70	[2]	1,742	[2]
Sales	(64)	[2]	(708)	[2]	(112)	[2]	(853)	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(1,370)	[3]	(978)	[3]	(3,606)	[3]	(3,097)	[3]
Transfers out of Level 3	(769)	[4]	(805)	[4]	(3,571)	[4]	(2,338)	[4]
Transfers Into Level 3	954	[4]	711	[4]	2,417	[4]	1,913	[4]
Ending Balance	25,840		29,519		25,840		29,519
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0	[5]	0	[5]	0	[5]	0	[5]
Available-for-sale securities [Member] | Fannie Mae [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	34		635		946		114
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	0		(1)		0		(1)
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	16	[1]	(8)	[1]	28	[1]
Purchases	35	[2]	853	[2]	41	[2]	1,742	[2]
Sales	(35)	[2]	(344)	[2]	(41)	[2]	(383)	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(2)	[3]	(9)	[3]	(21)	[3]	(11)	[3]
Transfers out of Level 3	0	[4]	(374)	[4]	(895)	[4]	(843)	[4]
Transfers Into Level 3	0	[4]	21	[4]	10	[4]	151	[4]
Ending Balance	32		797		32		797
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0	[5]	0	[5]	0	[5]	0	[5]
Available-for-sale securities [Member] | Freddie Mac [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	11		12		12		3
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	0		0		0		0
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(1)	[3]	(1)	[3]	(2)	[3]	(1)	[3]
Transfers out of Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Transfers Into Level 3	0	[4]	1	[4]	0	[4]	10	[4]
Ending Balance	10		12		10		12
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0	[5]	0	[5]	0	[5]	0	[5]
Available-for-sale securities [Member] | Alt-A private-label securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	6,456		6,652		7,256		7,049
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	5		(20)		(97)		(19)
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	179	[1]	(15)	[1]	472	[1]	63	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(263)	[3]	(250)	[3]	(800)	[3]	(725)	[3]
Transfers out of Level 3	(769)	[4]	(431)	[4]	(2,676)	[4]	(1,495)	[4]
Transfers Into Level 3	954	[4]	689	[4]	2,407	[4]	1,752	[4]
Ending Balance	6,562		6,625		6,562		6,625
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0	[5]	0	[5]	0	[5]	0	[5]
Available-for-sale securities [Member] | Subprime private-label securities [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	7,230		8,909		7,586		9,932
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	27		148		(168)		408
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	434	[1]	(484)	[1]	940	[1]	(1,089)	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	(363)	[2]	0	[2]	(363)	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(319)	[3]	(323)	[3]	(986)	[3]	(1,001)	[3]
Transfers out of Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Transfers Into Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Ending Balance	7,372		7,887		7,372		7,887
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0	[5]	0	[5]	0	[5]	0	[5]
Available-for-sale securities [Member] | Mortgage revenue bonds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	9,353		10,464		10,247		11,030
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	2		(5)		5		(8)
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	7	[1]	429	[1]	(13)	[1]	723	[1]
Purchases	29	[2]	0	[2]	29	[2]	0	[2]
Sales	(29)	[2]	(1)	[2]	(71)	[2]	(107)	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(693)	[3]	(288)	[3]	(1,528)	[3]	(1,039)	[3]
Transfers out of Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Transfers Into Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Ending Balance	8,669		10,599		8,669		10,599
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0	[5]	0	[5]	0	[5]	0	[5]
Available-for-sale securities [Member] | Other [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	3,244		3,707		3,445		3,806
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	(7)		(10)		7		(7)
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	50	[1]	9	[1]	12	[1]	120	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(92)	[3]	(107)	[3]	(269)	[3]	(320)	[3]
Transfers out of Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Transfers Into Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Ending Balance	3,195		3,599		3,195		3,599
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	0	[5]	0	[5]	0	[5]	0	[5]
Mortgage Loans [Member] | Consolidated Trusts [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	2,331		2,365		2,319		2,207
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	96		8		216		38
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	146	[2]	45	[2]	533	[2]	102	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	(123)	[3]	(101)	[3]	(292)	[3]	(251)	[3]
Transfers out of Level 3	(60)	[4]	(56)	[4]	(404)	[4]	(93)	[4]
Transfers Into Level 3	26	[4]	23	[4]	44	[4]	281	[4]
Ending Balance	2,416		2,284		2,416		2,284
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	87	[5]	6	[5]	143	[5]	28	[5]
Net derivatives [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	74		79		65		104
Total Gains or (Losses) (Realized/Unrealized) Included in Net Income (Loss)	(1)		118		14		123
Total Gains or (Losses) (Realized/Unrealized) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	(2)	[3]	(1)	[3]	(8)	[3]	(2)	[3]
Settlements	(41)	[3]	(72)	[3]	(41)	[3]	(101)	[3]
Transfers out of Level 3	0	[4]	(70)	[4]	0	[4]	(70)	[4]
Transfers Into Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Ending Balance	30		54		30		54
Net Unrealized Gains (Losses) Included in Net Loss Related to Assets Still Held	(9)	[5]	33	[5]	8	[5]	49	[5]
Long-term debt [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	(1,731)		(1,048)		(1,171)		(1,048)
Total Gain (Loss) (Realized/Unrealized) Included in Net Loss	(66)		(73)		(132)		(116)
Total Gains or (Lossed) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	4	[2]	0	[2]	4	[2]
Issues	(38)	[3]	(4)	[3]	(523)	[3]	(44)	[3]
Settlements	69	[3]	88	[3]	147	[3]	169	[3]
Transfers out of Level 3	62	[4]	35	[4]	172	[4]	112	[4]
Transfers Into Level 3	(152)	[4]	(136)	[4]	(349)	[4]	(211)	[4]
Ending Balance	(1,856)		(1,134)		(1,856)		(1,134)
Net Unrealized Gain (Loss) Included in Net Loss Related to Liabilities Still Held	(59)	[5]	(68)	[5]	(120)	[5]	(100)	[5]
Long-term debt [Member] | Fannie Mae [Member] | Senior Floating [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	(412)		(402)		(406)		(421)
Total Gain (Loss) (Realized/Unrealized) Included in Net Loss	(19)		(74)		(25)		(88)
Total Gains or (Lossed) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	0	[2]	0	[2]	0	[2]
Issues	0	[3]	0	[3]	0	[3]	0	[3]
Settlements	0	[3]	70	[3]	0	[3]	103	[3]
Transfers out of Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Transfers Into Level 3	0	[4]	0	[4]	0	[4]	0	[4]
Ending Balance	(431)		(406)		(431)		(406)
Net Unrealized Gain (Loss) Included in Net Loss Related to Liabilities Still Held	(19)	[5]	(74)	[5]	(25)	[5]	(89)	[5]
Long-term debt [Member] | Consolidated Trusts [Member]
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation, Calculation [Roll Forward]
Beginning Balance	(1,319)		(646)		(765)		(627)
Total Gain (Loss) (Realized/Unrealized) Included in Net Loss	(47)		1		(107)		(28)
Total Gains or (Lossed) Included in Other Comprehensive Income (Loss)	0	[1]	0	[1]	0	[1]	0	[1]
Purchases	0	[2]	0	[2]	0	[2]	0	[2]
Sales	0	[2]	4	[2]	0	[2]	4	[2]
Issues	(38)	[3]	(4)	[3]	(523)	[3]	(44)	[3]
Settlements	69	[3]	18	[3]	147	[3]	66	[3]
Transfers out of Level 3	62	[4]	35	[4]	172	[4]	112	[4]
Transfers Into Level 3	(152)	[4]	(136)	[4]	(349)	[4]	(211)	[4]
Ending Balance	(1,425)		(728)		(1,425)		(728)
Net Unrealized Gain (Loss) Included in Net Loss Related to Liabilities Still Held	$ (40)	[5]	$ 6	[5]	$ (95)	[5]	$ (11)	[5]

[1] Gains (losses) included in other comprehensive income (loss) are included in “Changes in unrealized gains (losses) on available-for-sale securities, net of reclassification adjustments and taxes” in the condensed consolidated statement of operations and comprehensive income (loss).

[2] Purchases and sales include activity related to the consolidation and deconsolidation of assets of securitization trusts.

[3] Issues and settlements include activity related to the consolidation and deconsolidation of liabilities of securitization trusts.

[4] Transfers out of Level 3 consisted primarily of Fannie Mae MBS and private-label mortgage-related securities backed by Alt-A loans. Prices for these securities were obtained from multiple third-party vendors supported by market observable inputs. Transfers into Level 3 consisted primarily of private-label mortgage-related securities backed by Alt-A loans. Prices for these securities are based on inputs from a single source or inputs that were not readily observable.

[5] Amount represents temporary changes in fair value. Amortization, accretion and other-than-temporary impairments are not considered unrealized and are not included in this amount.