Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Millions	3 Months Ended
Mar. 31, 2019	Mar. 31, 2018
Net cash provided by (used in) operating activities
Net cash provided by (used in) operating activities	$ 1,816	$ (1,409)
Cash flows provided by investing activities:
Proceeds from maturities and paydowns of trading securities held for investment	15	110
Proceeds from sales of trading securities held for investment	49	0
Proceeds from maturities and paydowns of available-for-sale securities	113	266
Proceeds from sales of available-for-sale securities	131	648
Purchases of loans held for investment	(33,631)	(40,045)
Advances to lenders	(22,991)	(27,898)
Proceeds from disposition of acquired property and preforeclosure sales	1,965	2,360
Net change in federal funds sold and securities purchased under agreements to resell or similar arrangements	10,688	(20,231)
Other, net	(124)	(264)
Net cash provided by investing activities	47,446	15,816
Cash flows used in financing activities:
Payments of cash dividends on senior preferred stock to Treasury	(3,240)	0
Proceeds from senior preferred stock purchase agreement with Treasury	0	3,687
Other, net	0	442
Net cash used in financing activities	(46,444)	(37,307)
Net increase (decrease) in cash, cash equivalents and restricted cash	2,818	(22,900)
Cash, cash equivalents and restricted cash at beginning of period	49,423	60,260
Cash, cash equivalents and restricted cash at end of period	52,241	37,360
Cash paid during the period for:
Interest	28,650	27,041
Income taxes	0	0
Fannie Mae [Member]
Cash flows provided by investing activities:
Proceeds from repayments of loans acquired as held for investment	2,786	4,164
Proceeds from sales of loans acquired as held for investment of Fannie Mae	26	80
Cash flows used in financing activities:
Proceeds from issuance of debt	173,122	288,281
Payments to redeem debt	(184,222)	(299,797)
Consolidated Trusts [Member]
Cash flows provided by investing activities:
Proceeds from repayments of loans acquired as held for investment	88,419	96,626
Cash flows used in financing activities:
Proceeds from issuance of debt	64,821	89,493
Payments to redeem debt	$ (96,925)	$ (119,413)

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