Fair Value Level 3 Valuation Inputs (Details) (USD $) In Millions, unless otherwise specified																			9 Months Ended							9 Months Ended													9 Months Ended													9 Months Ended													9 Months Ended																										9 Months Ended														9 Months Ended																9 Months Ended								9 Months Ended									9 Months Ended							9 Months Ended								9 Months Ended
	Sep. 30, 2012 Fannie Mae [Member]	Dec. 31, 2011 Fannie Mae [Member]	Sep. 30, 2012 Consolidated Trusts [Member]	Dec. 31, 2011 Consolidated Trusts [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Fannie Mae [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Consolidated Trusts [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member]	Dec. 31, 2011 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Alt-A private-label securities [Member]	Dec. 31, 2011 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Alt-A private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Subprime private-label securities [Member]	Dec. 31, 2011 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Subprime private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Mortgage revenue bonds [Member]	Dec. 31, 2011 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Mortgage revenue bonds [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Other [Member]	Dec. 31, 2011 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Other [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Alt-A private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Alt-A private-label securities [Member] Available-for-sale securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Alt-A private-label securities [Member] Available-for-sale securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Alt-A private-label securities [Member] Available-for-sale securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Subprime private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Subprime private-label securities [Member] Trading securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Subprime private-label securities [Member] Trading securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Subprime private-label securities [Member] Trading securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Subprime private-label securities [Member] Available-for-sale securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Subprime private-label securities [Member] Available-for-sale securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Subprime private-label securities [Member] Available-for-sale securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Other [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Other [Member] Available-for-sale securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Other [Member] Available-for-sale securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus with Inputs [Member] Other [Member] Available-for-sale securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus Without Inputs [Member] Agency [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus Without Inputs [Member] Alt-A private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus Without Inputs [Member] Subprime private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consensus Without Inputs [Member] Other [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Dealer Mark [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Alt-A private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Alt-A private-label securities [Member] Trading securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Alt-A private-label securities [Member] Trading securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Alt-A private-label securities [Member] Trading securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Alt-A private-label securities [Member] Available-for-sale securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Alt-A private-label securities [Member] Available-for-sale securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Alt-A private-label securities [Member] Available-for-sale securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Subprime private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Subprime private-label securities [Member] Trading securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Subprime private-label securities [Member] Trading securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Subprime private-label securities [Member] Trading securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Subprime private-label securities [Member] Available-for-sale securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Subprime private-label securities [Member] Available-for-sale securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Subprime private-label securities [Member] Available-for-sale securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Mortgage revenue bonds [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Mortgage revenue bonds [Member] Trading securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Mortgage revenue bonds [Member] Trading securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Mortgage revenue bonds [Member] Trading securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Mortgage revenue bonds [Member] Available-for-sale securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Mortgage revenue bonds [Member] Available-for-sale securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Mortgage revenue bonds [Member] Available-for-sale securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Other [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Other [Member] Available-for-sale securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Other [Member] Available-for-sale securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Discounted Cash Flow with Inputs [Member] Other [Member] Available-for-sale securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Internal Model [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Other Valuation Technique [Member] Agency [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Other Valuation Technique [Member] Alt-A private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Other Valuation Technique [Member] Subprime private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Other Valuation Technique [Member] Mortgage revenue bonds [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Other Valuation Technique [Member] Other [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Single Vendor With Inputs[Member] Alt-A private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Single Vendor With Inputs[Member] Alt-A private-label securities [Member] Available-for-sale securities [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Single Vendor With Inputs[Member] Alt-A private-label securities [Member] Available-for-sale securities [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Single Vendor With Inputs[Member] Alt-A private-label securities [Member] Available-for-sale securities [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Single Vendor Without Inputs [Member] Subprime private-label securities [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Single Vendor Without Inputs [Member] Mortgage revenue bonds [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Fannie Mae [Member]	Dec. 31, 2011 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Fannie Mae [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Fannie Mae [Member] Senior Floating [Member]	Dec. 31, 2011 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Fannie Mae [Member] Senior Floating [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Fannie Mae [Member] Discounted Cash Flow without Inputs [Member] Senior Floating [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member]	Dec. 31, 2011 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Consensus with Inputs [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Consensus with Inputs [Member] Long-term debt [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Consensus with Inputs [Member] Long-term debt [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Consensus with Inputs [Member] Long-term debt [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Consensus Without Inputs [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Discounted Cash Flow with Inputs [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Discounted Cash Flow with Inputs [Member] Long-term debt [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Discounted Cash Flow with Inputs [Member] Long-term debt [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Discounted Cash Flow with Inputs [Member] Long-term debt [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single Vendor Without Inputs [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Build-Up [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Build-Up [Member] Mortgage Loans [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Build-Up [Member] Mortgage Loans [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Build-Up [Member] Mortgage Loans [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Consensus with Inputs [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Consensus with Inputs [Member] Mortgage Loans [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Consensus with Inputs [Member] Mortgage Loans [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Consensus with Inputs [Member] Mortgage Loans [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Consensus Without Inputs [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Discounted Cash Flow with Inputs [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Discounted Cash Flow with Inputs [Member] Mortgage Loans [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Discounted Cash Flow with Inputs [Member] Mortgage Loans [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Discounted Cash Flow with Inputs [Member] Mortgage Loans [Member] Weighted Average [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Single-Family [Member] Single Vendor Without Inputs [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Multifamily [Member] Build-Up [Member]	Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Multifamily [Member] Build-Up [Member] Mortgage Loans [Member] Minimum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Multifamily [Member] Build-Up [Member] Mortgage Loans [Member] Maximum [Member]		Sep. 30, 2012 Significant Unobservable Inputs (Level 3) [Member] Recurring Fair Value Measurements [Member] Consolidated Trusts [Member] Multifamily [Member] Build-Up [Member] Mortgage Loans [Member] Weighted Average [Member]
Fair Value Inputs, Quantitative Information [Line Items]
Default Rate (%)																			0.00%	[1]	15.60%	[1]	2.90%	[1]		14.90%	[1]	27.80%	[1]	20.20%	[1]	0.00%	[1]	32.80%	[1]	16.70%	[1]		0.20%	[1]	5.00%	[1]	4.60%	[1]								9.10%	[1]	15.00%	[1]	14.30%	[1]	0.00%	[1]	21.00%	[1]	5.70%	[1]		11.80%	[1]	24.20%	[1]	17.10%	[1]	0.00%	[1]	25.80%	[1]	15.40%	[1]															2.10%	[1]	10.00%	[1]	5.00%	[1]									1.10%	[1]	1.40%	[1]	1.10%	[1]											6.00%	[1]	18.70%	[1]	10.10%	[1]			0.00%	[1]	15.60%	[1]	8.90%	[1]				0.10%	[1]	93.40%	[1]	14.70%	[1]		6.00%	[1]	18.70%	[1]	10.90%	[1]			0.00%	[1]	15.60%	[1]	9.30%	[1]
Prepayment Speed (%)																			0.20%	[1]	32.80%	[1]	10.00%	[1]		0.10%	[1]	4.30%	[1]	2.00%	[1]	0.00%	[1]	17.10%	[1]	2.40%	[1]		3.00%	[1]	11.00%	[1]	3.60%	[1]								0.70%	[1]	3.80%	[1]	2.00%	[1]	0.00%	[1]	68.20%	[1]	8.10%	[1]		0.20%	[1]	5.80%	[1]	2.70%	[1]	0.10%	[1]	14.20%	[1]	2.50%	[1]															0.40%	[1]	3.60%	[1]	3.00%	[1]									15.10%	[1]	15.70%	[1]	15.20%	[1]											1.70%	[1]	8.50%	[1]	4.90%	[1]			0.00%	[1]	100.00%	[1]	53.50%	[1]				5.50%	[1]	50.20%	[1]	21.90%	[1]		1.30%	[1]	8.50%	[1]	4.20%	[1]			0.00%	[1]	8.50%	[1]	4.70%	[1]
Severity (%)																			50.00%	[1]	70.00%	[1]	54.00%	[1]		80.00%	[1]	80.00%	[1]	80.00%	[1]	65.00%	[1]	80.00%	[1]	77.50%	[1]		50.00%	[1]	85.00%	[1]	83.40%	[1]								65.00%	[1]	70.00%	[1]	69.50%	[1]	50.00%	[1]	70.00%	[1]	56.40%	[1]		80.00%	[1]	80.00%	[1]	80.00%	[1]	65.00%	[1]	80.00%	[1]	76.80%	[1]															65.00%	[1]	85.00%	[1]	84.90%	[1]									50.00%	[1]	50.00%	[1]	50.00%	[1]											65.00%	[1]	70.00%	[1]	65.80%	[1]			50.00%	[1]	70.00%	[1]	59.70%	[1]				4.90%	[1]	97.00%	[1]	33.20%	[1]		65.00%	[1]	70.00%	[1]	65.70%	[1]			50.00%	[1]	70.00%	[1]	61.20%	[1]
Spread (bps)																			3.03%	[1]	6.23%	[1]	4.389%	[1]		5.25%	[1]	6.93%	[1]	6.108%	[1]	4.16%	[1]	7.38%	[1]	5.781%	[1]		4.37%	[1]	8.29%	[1]	6.756%	[1]								4.87%	[1]	6.00%	[1]	5.268%	[1]	3.01%	[1]	7.98%	[1]	4.713%	[1]		5.15%	[1]	7.25%	[1]	6.026%	[1]	3.75%	[1]	7.35%	[1]	5.819%	[1]		2.75%	[1]	3.90%	[1]	3.354%	[1]	0.90%	[1]	3.90%	[1]	3.068%	[1]		5.16%	[1]	12.07%	[1]	6.959%	[1]									4.30%	[1]	4.31%	[1]	4.302%	[1]											5.07%	[1]	10.98%	[1]	6.63%	[1]			1.03%	[1]	11.16%	[1]	3.807%	[1]											5.07%	[1]	10.98%	[1]	6.185%	[1]			4.48%	[1]	11.16%	[1]	5.876%	[1]			0.91%	[1]	4.184%	[1]	1.953%	[1]
Trading securities					$ 2,573			$ 2,573	$ 4,238	$ 430	$ 345	$ 1,265	$ 1,280	$ 681	$ 724	$ 118	$ 143								$ 198																				$ 79	[2]		$ 136			$ 398													$ 743													$ 635																							$ 32		$ 46	$ 118								$ 188
Available-for-sale securities					25,840			25,840	29,492	6,562	7,256	7,372	7,586	8,669	10,247	3,195	3,445	2,034							2,011													442									1,272	2,193	1,223		3,050													3,079													1,994													758								42	[2]		89	286	772	206								6,389
Mortgage loans held for investment			7,840	3,611	477,585	230,175	247,410																																																																																																															2,416	2,319																	2,253	1,448							239							294	255							17	163
Derivatives								30																																										166																																															(136)
Long-term debt	$ (830)	$ (838)	$ (7,368)	$ (3,939)		$ (1,087)	$ (19,715)	$ (1,856)	$ (1,171)																																																																																																								$ (431)	$ (406)	$ (431)	$ (406)	$ (431)	$ (1,425)	$ (765)	$ (209)							$ (381)	$ (658)							$ (177)

[1] Valuation techniques for which no unobservable inputs are disclosed generally reflect the use of third-party pricing services or dealers, and the range of unobservable inputs applied by these sources is not readily available or cannot be reasonably estimated. Where we have disclosed unobservable inputs for consensus and single vendor techniques those inputs are based on our validations performed at the security level.

[2] Includes Fannie Mae and Freddie Mac securities.