Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
Net cash provided by (used in) operating activities
Net cash provided by (used in) operating activities	$ 2,180	$ (1,675)
Cash flows provided by investing activities:
Proceeds from maturities and paydowns of trading securities held for investment	28	141
Proceeds from sales of trading securities held for investment	49	96
Proceeds from maturities and paydowns of available-for-sale securities	268	417
Proceeds from sales of available-for-sale securities	376	672
Purchases of loans held for investment	(90,612)	(86,615)
Advances to lenders	(54,440)	(55,151)
Proceeds from disposition of acquired property and preforeclosure sales	3,870	4,848
Net change in federal funds sold and securities purchased under agreements to resell or similar arrangements	13,376	3,170
Other, net	(743)	(495)
Net cash provided by investing activities	95,506	80,506
Cash flows used in financing activities:
Payments of cash dividends on senior preferred stock to Treasury	5,601	938
Proceeds from senior preferred stock purchase agreement with Treasury	0	3,687
Other, net	132	(20)
Net cash used in financing activities	(86,139)	(90,362)
Net increase (decrease) in cash, cash equivalents and restricted cash	11,547	(11,531)
Cash, cash equivalents and restricted cash at beginning of period	49,423	60,260
Cash, cash equivalents and restricted cash at end of period	60,970	48,729
Cash paid during the period for:
Interest	57,637	54,408
Income taxes	700	460
Fannie Mae [Member]
Cash flows provided by investing activities:
Proceeds from repayments of loans acquired as held for investment	5,557	7,945
Proceeds from sales of loans acquired as held for investment of Fannie Mae	5,821	2,555
Cash flows used in financing activities:
Proceeds from issuance of debt	374,284	473,373
Payments to redeem debt	(389,779)	(499,674)
Consolidated Trusts [Member]
Cash flows provided by investing activities:
Proceeds from repayments of loans acquired as held for investment	211,956	202,923
Cash flows used in financing activities:
Proceeds from issuance of debt	158,970	172,507
Payments to redeem debt	$ (224,145)	$ (239,297)