Consolidated Statements of Cash Flows - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Cash flows provided by (used in) operating activities:
Net income	$ 16,978	$ 17,408	$ 12,923
Reconciliation of net income to net cash provided by (used in) operating activities:
Amortization of cost basis adjustments	(1,590)	(2,535)	(5,731)
Net impact of hedged mortgage assets and debt	11	210	(423)
Provision (benefit) for credit losses	(186)	(1,670)	6,277
Valuation (gains) losses	(1,116)	(760)	361
Change in expected credit enhancement recoveries	(194)	193	(727)
Deferred income tax expense (benefit)	1,137	1,231	(195)
Net gains related to the disposition of acquired property and preforeclosure sales, including credit enhancements	(769)	(1,182)	(1,782)
Net change in accrued interest receivable	(733)	(1,110)	(1,826)
Net change in servicer advances	30	31	(217)
Net change in accrued interest payable	891	1,014	731
Other, net	331	130	(352)
Net change in trading securities	(25,310)	(1,077)	34,787
Net cash provided by (used in) operating activities	(10,520)	11,883	43,826
Mortgage loans acquired held for investment:
Purchases	(135,865)	(124,372)	(247,016)
Proceeds from sales	3,833	2,182	7,501
Proceeds from repayments	366,164	335,240	500,158
Advances to lenders	(95,139)	(103,364)	(178,450)
Proceeds from disposition of acquired property, preforeclosure sales and insurance proceeds	3,636	5,718	2,860
Net change in federal funds sold and securities purchased under agreements to resell	14,725	(16,135)	6,178
Other, net	441	(119)	(1,103)
Net cash provided by (used in) investing activities	157,795	99,150	90,128
Cash flows provided by (used in) financing activities:
Other, net	(3)	0	0
Net cash provided by (used in) financing activities	(137,170)	(130,168)	(154,744)
Net increase (decrease) in cash, cash equivalents and restricted cash and cash equivalents	10,105	(19,135)	(20,790)
Cash, cash equivalents and restricted cash and cash equivalents at beginning of period	68,706	87,841	108,631
Cash, cash equivalents and restricted cash and cash equivalents at end of period	78,811	68,706	87,841
Cash paid during the period for:
Interest	128,770	118,897	101,469
Income taxes, net of refunds	2,871	2,750	3,511
Fannie Mae
Cash flows provided by (used in) financing activities:
Proceeds from the issuance of debt	469,637	415,790	340,708
Payments to redeem debt	(454,693)	(427,161)	(403,967)
Consolidated Trusts
Cash flows provided by (used in) financing activities:
Proceeds from the issuance of debt	224,003	228,976	469,955
Payments to redeem debt	$ (376,114)	$ (347,773)	$ (561,440)