Condensed Consolidated Balance Sheets (Unaudited) - USD ($) shares in Millions, $ in Millions	Sep. 30, 2020	Dec. 31, 2019
Assets:
Cash and cash equivalents	$ 37,472	$ 21,184
Restricted Cash and Cash Equivalents	73,516	40,223
Federal funds sold and securities purchased under agreements to resell or similar arrangements	12,700	13,578
Investments in securities:
Debt Securities, Trading	142,472	48,123
Total fair value	1,895	2,404
Total investments in securities	144,367	50,527
Mortgage loans:
Loans held for sale, at lower of cost or fair value	8,312	6,773
Financing Receivable, before Allowance for Credit Loss	3,550,734	3,336,405
Allowance for loan losses	(11,703)	(9,016)
Total loans held for investment, net of allowance	3,539,031	3,327,389
Total mortgage loans	3,547,343	3,334,162
Advance to Lender	10,228	6,453
Deferred tax assets, net	12,808	11,910
Interest Receivable	(9,748)	(8,604)
Acquired property, net	1,462	2,366
Other assets	14,959	14,312
Total assets	3,864,603	3,503,319
Liabilities:
Accrued interest payable (includes $9,133 and $9,361, respectively, related to consolidated trusts)	9,982	10,228
Other Liabilities	14,124	11,097
Total liabilities	3,843,910	3,488,711
Commitments and contingencies (Note 13)	0	0
Fannie Mae stockholders’ equity:
Senior Preferred Stock Value	120,836	120,836
Preferred Stock, Value, Issued	19,130	19,130
Common Stock, Value, Issued	687	687
Accumulated deficit	(112,680)	(118,776)
Accumulated other comprehensive income	120	131
Treasury stock, at cost, 150,675,136 shares	(7,400)	(7,400)
Total stockholders’ equity (See Note 1: Senior Preferred Stock Purchase Agreement and Senior Preferred Stock for information on the related dividend obligation and liquidation preference)	20,693	14,608
Total liabilities and equity	$ 3,864,603	$ 3,503,319
Senior preferred stock liquidation preference	137,976	131,178
SEC Schedule, 12-09, Allowance, Loan and Lease Loss [Member]
Mortgage loans:
Interest Receivable	$ (569)
Fannie Mae [Member]
Mortgage loans:
Financing Receivable, before Allowance for Credit Loss	111,056	$ 94,911
Liabilities:
Debt (includes $3,986 and $5,687, respectively, of debt of Fannie Mae at fair value and $24,741 and $21,880, respectively, of debt of consolidated trusts, at fair value)	289,423	182,247
Consolidated Trusts [Member]
Assets:
Restricted Cash and Cash Equivalents	65,431	33,294
Investments in securities:
Debt Securities, Trading	850	896
Mortgage loans:
Financing Receivable, before Allowance for Credit Loss	3,439,678	3,241,494
Interest Receivable	(9,867)	(8,172)
Liabilities:
Accrued interest payable (includes $9,133 and $9,361, respectively, related to consolidated trusts)	9,133	9,361
Debt (includes $3,986 and $5,687, respectively, of debt of Fannie Mae at fair value and $24,741 and $21,880, respectively, of debt of consolidated trusts, at fair value)	3,530,381	3,285,139
Other Liabilities	$ 1,813	$ 376