CONSOLIDATED STATEMENTS OF CASH FLOWS (unaudited) - USD ($)	9 Months Ended
	Sep. 30, 2024	Sep. 30, 2023
Cash flows from operating activities:
Net income	$ 150,679,000	$ 152,384,000
Adjustments to reconcile net income to net cash provided by operating activities:
Net amortization of deferred gains, premiums, and discounts on loans, investments, Farmer Mac Guaranteed Securities, and USDA Securities	(19,100,000)	(11,456,000)
Amortization of debt premiums, discounts, and issuance costs	29,661,000	22,851,000
Net change in fair value of trading securities, hedged items, and financial derivatives	(62,797,000)	340,035,000
Losses on sale of mortgage loans	1,147,000	0
Gains on the sale of available-for-sale investment securities	(1,052,000)	0
Total provision for/(release of) allowance for losses	7,618,000	1,711,000
Excess tax benefits related to stock-based awards	447,000	470,000
Deferred income taxes	(768,000)	9,304,000
Stock-based compensation expense	6,528,000	4,699,000
Proceeds from repayment of loans purchased as held for sale	28,302,000	19,364,000
Net change in:
Interest receivable	27,320,000	(7,116,000)
Guarantee and commitment fees receivable	131,000	(1,633,000)
Other assets	50,121,000	(7,903,000)
Accrued interest payable	32,803,000	54,263,000
Custodial deposit liability	(18,085,000)	(31,489,000)
Other liabilities	12,160,000	(2,836,000)
Net cash provided by operating activities	245,115,000	542,648,000
Cash flows from investing activities:
Purchases of equipment and leasehold improvements	(5,272,000)	0
Purchases of other investment securities	(1,770,000)	(2,135,000)
Purchases of loans held for investment	(2,580,492,000)	(1,520,116,000)
Purchases of defaulted loans	(317,000)	0
Proceeds from repayment of loans purchased as held for investment	1,282,579,000	1,081,265,000
Proceeds from sale of available-for-sale investment securities	115,247,000	0
Proceeds from sale of loans previously classified as held for investment	5,775,000	0
Proceeds from sale of Farmer Mac Guaranteed Securities	60,192,000	0
Net cash used in investing activities	(899,528,000)	(1,280,405,000)
Cash flows from financing activities:
Proceeds from issuance of discount notes	42,829,487,000	36,018,319,000
Proceeds from issuance of medium-term notes	5,721,174,000	5,559,198,000
Proceeds from issuance of debt securities of consolidated trusts	283,462,000	222,188,000
Payments to redeem discount notes	(42,371,640,000)	(35,059,286,000)
Payments to redeem medium-term notes	(5,593,883,000)	(5,931,450,000)
Payments to third parties on debt securities of consolidated trusts	(115,609,000)	(91,118,000)
Proceeds from common stock issuance	209,000	169,000
Tax payments related to share-based awards	(4,388,000)	(2,847,000)
Retirement of preferred stock	(75,000,000)	0
Dividends paid on common and preferred stock	(66,050,000)	(56,100,000)
Net cash provided by financing activities	607,762,000	659,073,000
Net change in cash and cash equivalents	(46,651,000)	(78,684,000)
Cash and cash equivalents at beginning of period	888,707,000	861,002,000
Cash and cash equivalents at end of period	842,056,000	782,318,000
Non-cash activity:
Loans securitized as Farmer Mac Guaranteed Securities	85,114,000	10,573,000
Loans held for investment transferred to consolidated trusts	305,559,000	281,027,000
Available-for-sale securities
Cash flows from investing activities:
Purchases of available-for-sale and held-to-maturity investment securities	(1,971,974,000)	(1,381,795,000)
Proceeds from repayment of available-for-sale and held-to-maturity investment securities	1,049,268,000	1,146,861,000
Farmer Mac Guaranteed Securities and USDA Securities
Cash flows from investing activities:
Purchases of Farmer Mac Guaranteed Securities and USDA Securities	(1,522,510,000)	(3,182,678,000)
Proceeds from repayment of Farmer Mac Guaranteed Securities and USDA Securities	$ 2,669,746,000	$ 2,578,193,000