Consolidated Statements of Operations and Comprehensive Income - USD ($) shares in Millions, $ in Millions	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Interest income:
Trading securities	$ 524	$ 874	$ 1,627
Available-for-sale securities	58	98	175
Mortgage loans	98,930	106,316	117,374
Securities purchased under agreements to resell or similar arrangements	21	146	843
Other	142	135	163
Total interest income	99,675	107,569	120,182
Interest expense:
Short-term debt	(4)	(182)	(501)
Long-term debt	(70,084)	(82,521)	(98,388)
Total interest expense	(70,088)	(82,703)	(98,889)
Net interest income	29,587	24,866	21,293
Benefit (provision) for credit losses	5,130	(678)	4,011
Net interest income after benefit (provision) for credit losses	34,717	24,188	25,304
Non-interest Income:
Investment gains, net	1,352	907	1,770
Fair value gains (losses), net	155	(2,501)	(2,214)
Fee and other income	361	462	566
Non-interest income (loss)	1,868	(1,132)	122
Administrative expenses:
Salaries and employee benefits	(1,493)	(1,554)	(1,486)
Professional services	(817)	(921)	(967)
Other administrative expenses	(755)	(593)	(570)
Total administrative expenses	(3,065)	(3,068)	(3,023)
Foreclosed property expense	(33)	(177)	(515)
Temporary Payroll Tax Cut Continuation Act of 2011 (“TCCA”) fees	(3,071)	(2,673)	(2,432)
Credit enhancement expense	(1,051)	(1,361)	(1,134)
Change in expected credit enhancement recoveries	(194)	233	0
Other expenses, net	(1,222)	(1,131)	(745)
Total expenses	(8,636)	(8,177)	(7,849)
Income before federal income taxes	27,949	14,879	17,577
Provision for federal income taxes	(5,773)	(3,074)	(3,417)
Net income	22,176	11,805	14,160
Other comprehensive loss:
Changes in unrealized gains on available-for-sale securities, net of reclassification adjustments and taxes	(67)	(23)	(179)
Other, net of taxes	(11)	8	(12)
Total other comprehensive loss	(78)	(15)	(191)
Total comprehensive income	22,098	11,790	13,969
Dividends distributed or amounts attributable to senior preferred stock	(22,098)	(11,790)	(13,969)
Net income attributable to common stockholders	$ 78	$ 15	$ 191
Earnings (loss) per share - basic (in dollars per share)	$ 0.01	$ 0.00	$ 0.03
Earnings (loss) per share - diluted (in dollars per share)	$ 0.01	$ 0.00	$ 0.03
Weighted-average common shares outstanding, basic	5,867	5,867	5,762
Weighted-average common shares outstanding, diluted	5,893	5,893	5,893