FARMER MAC GUARANTEED SECURITIES AND USDA SECURITIES - Schedule of On-Balance Sheet Securities (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2023	Dec. 31, 2022
Trading:
Debt Securities, Available-for-Sale, Accrued Interest, after Allowance for Credit Loss, Statement of Financial Position [Extensible Enumeration]	Accrued interest receivable (includes $16,764 and $12,514, respectively, related to consolidated trusts)	Accrued interest receivable (includes $16,764 and $12,514, respectively, related to consolidated trusts)
Farmer Mac Guaranteed Securities
Held-to-maturity:
Unpaid Principal Balance	$ 4,242,867	$ 1,021,275
Amortized Cost	4,213,278	1,021,213
Allowance for losses	(209)	(59)
Unrealized Gains	4,783	355
Unrealized Losses	(40,257)	(54,954)
Fair Value	4,177,595	966,555
Available-for-sale:
Amortized cost	5,825,433
Fair Value	5,532,479
USDA Securities
Held-to-maturity:
Unpaid Principal Balance	2,331,093	2,384,946
Amortized Cost	2,354,171	2,409,834
Allowance for losses	0	0
Unrealized Gains	417	668
Unrealized Losses	(319,783)	(312,824)
Fair Value	2,034,805	2,097,678
Trading:
Unpaid Principal Balance	1,236	1,770
Amortized Cost	1,300	1,850
Allowance for losses	0	0
Unrealized Gains	0	0
Unrealized Losses	(59)	(83)
Fair Value	1,241	$ 1,767
Trading securities, weighted-average yield		4.84%
Farmer Mac Guaranteed Securities and USDA Securities
Held-to-maturity:
Unpaid Principal Balance	6,573,960	$ 3,406,221
Amortized Cost	6,567,449	3,431,047
Allowance for losses	(209)	(59)
Unrealized Gains	5,200	1,023
Unrealized Losses	(360,040)	(367,778)
Fair Value	6,212,400	3,064,233
Farmer Mac Guaranteed Securities
Held-to-maturity:
Amortized Cost	4,213,069	1,021,154
Available-for-sale:
Unpaid Principal Balance	5,816,024	8,008,067
Amortized cost	5,825,433	8,019,495
Allowance for losses	(317)	(546)
Unrealized Gains	16,774	2,061
Unrealized Losses	(309,411)	(413,784)
Fair Value	5,532,479	7,607,226
Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)	(29,589)	(62)
Available-for-sale:
Unamortized Premium/(Discount)	(29,589)	(62)
Trading:
Unamortized Premium/(Discount)	(29,589)	(62)
Held-to-Maturity Securities \| USDA Securities
Held-to-maturity:
Unamortized Premium/(Discount)	23,078	24,888
Available-for-sale:
Unamortized Premium/(Discount)	23,078	24,888
Trading:
Unamortized Premium/(Discount)	23,078	24,888
Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities and USDA Securities
Held-to-maturity:
Unamortized Premium/(Discount)	(6,511)	24,826
Available-for-sale:
Unamortized Premium/(Discount)	(6,511)	24,826
Trading:
Unamortized Premium/(Discount)	(6,511)	24,826
Available-for-Sale Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)	9,409	11,428
Available-for-sale:
Unamortized Premium/(Discount)	9,409	11,428
Trading:
Unamortized Premium/(Discount)	9,409	11,428
Trading Securities \| USDA Securities
Held-to-maturity:
Unamortized Premium/(Discount)	64	80
Available-for-sale:
Unamortized Premium/(Discount)	64	80
Trading:
Unamortized Premium/(Discount)	64	80
Farmer Mac Guaranteed Securities \| Farmer Mac Guaranteed Securities
Available-for-sale:
Fair Value	9,800	7,800
Trading:
Derivative, notional amount	238,400	250,100
Farmer Mac Guaranteed Securities \| Farmer Mac Guaranteed Securities
Available-for-sale:
Unpaid Principal Balance	0	0
Amortized cost	9,409	10,622
Allowance for losses	0	0
Unrealized Gains	358	0
Unrealized Losses	0	(2,775)
Fair Value	9,767	7,847
Farmer Mac Guaranteed Securities \| Available-for-Sale Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)	9,409	10,622
Available-for-sale:
Unamortized Premium/(Discount)	9,409	10,622
Trading:
Unamortized Premium/(Discount)	9,409	10,622
AgVantage
Trading:
Available-for-sale, accrued interest excluded	47,200	51,500
Held-to-maturity, accrued interest excluded	67,400	44,400
Trading securities, accrued interest excluded	42	47
AgVantage \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unpaid Principal Balance	4,206,324	1,000,689
Amortized Cost	4,176,702	1,000,594
Allowance for losses	(209)	(59)
Unrealized Gains	4,676	353
Unrealized Losses	(39,451)	(54,098)
Fair Value	4,141,718	946,790
AgVantage \| Farmer Mac Guaranteed Securities
Available-for-sale:
Unpaid Principal Balance	5,816,024	8,008,067
Amortized cost	5,816,024	8,008,873
Allowance for losses	(317)	(546)
Unrealized Gains	16,416	2,061
Unrealized Losses	(309,411)	(411,009)
Fair Value	5,522,712	7,599,379
AgVantage \| Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)	(29,622)	(95)
Available-for-sale:
Unamortized Premium/(Discount)	(29,622)	(95)
Trading:
Unamortized Premium/(Discount)	(29,622)	(95)
AgVantage \| Available-for-Sale Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)	0	806
Available-for-sale:
Unamortized Premium/(Discount)	0	806
Trading:
Unamortized Premium/(Discount)	0	806
Farmer Mac Guaranteed USDA Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unpaid Principal Balance	36,543	20,586
Amortized Cost	36,576	20,619
Allowance for losses	0	0
Unrealized Gains	107	2
Unrealized Losses	(806)	(856)
Fair Value	$ 35,877	19,765
Farmer Mac Guaranteed USDA Securities \| USDA Securities
Trading:
Trading securities, weighted-average yield	5.46%
Farmer Mac Guaranteed USDA Securities \| Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)	$ 33	33
Available-for-sale:
Unamortized Premium/(Discount)	33	33
Trading:
Unamortized Premium/(Discount)	$ 33	$ 33

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