Farmer Mac Guaranteed Securities and USDA Securities - Schedule of On-Balance Sheet Securities (Details) - USD ($)		12 Months Ended
Dec. 31, 2021	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 $12,514 and $10,418, respectively, related to consolidated trusts)	Accrued interest receivable (includes $12,514 and $10,418, respectively, related to consolidated trusts)
Farmer Mac Guaranteed Securities
Held-to-maturity:
Unpaid Principal Balance	$ 2,033,345,000	$ 1,021,275,000
Amortized Cost	2,033,371,000	1,021,213,000
Allowance for losses	(132,000)	(59,000)
Unrealized Gains	11,259,000	355,000
Unrealized Losses	(12,764,000)	(54,954,000)
Fair Value	2,031,734,000	966,555,000
Available-for-sale:
Amortized cost		8,019,495,000
Fair Value		7,607,226,000
USDA Securities:
Held-to-maturity:
Unpaid Principal Balance	2,411,649,000	2,384,946,000
Amortized Cost	2,436,331,000	2,409,834,000
Allowance for losses	0	0
Unrealized Gains	95,741,000	668,000
Unrealized Losses	0	(312,824,000)
Fair Value	2,532,072,000	2,097,678,000
Trading:
Unpaid Principal Balance	4,299,000	1,770,000
Amortized Cost	4,433,000	1,850,000
Allowance for losses	0	0
Unrealized Gains	1,000	0
Unrealized Losses	(33,000)	(83,000)
Fair Value	$ 4,401,000	1,767,000
Trading securities, weighted-average yield	5.05%
Farmer Mac Guaranteed Securities and USDA Securities
Held-to-maturity:
Unpaid Principal Balance	$ 4,444,994,000	3,406,221,000
Amortized Cost	4,469,702,000	3,431,047,000
Allowance for losses	(132,000)	(59,000)
Unrealized Gains	107,000,000	1,023,000
Unrealized Losses	(12,764,000)	(367,778,000)
Fair Value	4,563,806,000	3,064,233,000
Farmer Mac Guaranteed Securities:
Held-to-maturity:
Amortized Cost	2,033,239,000	1,021,154,000
Available-for-sale:
Unpaid Principal Balance	6,122,240,000	8,008,067,000
Amortized cost	6,135,807,000	8,019,495,000
Allowance for losses	(263,000)	(546,000)
Unrealized Gains	213,025,000	2,061,000
Unrealized Losses	(20,010,000)	(413,784,000)
Fair Value	6,328,559,000	7,607,226,000
Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)	26,000	(62,000)
Available-for-sale:
Unamortized Premium/(Discount)	26,000	(62,000)
Trading:
Unamortized Premium/(Discount)	26,000	(62,000)
Held-to-Maturity Securities \| USDA Securities:
Held-to-maturity:
Unamortized Premium/(Discount)	24,682,000	24,888,000
Available-for-sale:
Unamortized Premium/(Discount)	24,682,000	24,888,000
Trading:
Unamortized Premium/(Discount)	24,682,000	24,888,000
Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities and USDA Securities
Held-to-maturity:
Unamortized Premium/(Discount)	24,708,000	24,826,000
Available-for-sale:
Unamortized Premium/(Discount)	24,708,000	24,826,000
Trading:
Unamortized Premium/(Discount)	24,708,000	24,826,000
Available-for-Sale Securities \| Farmer Mac Guaranteed Securities:
Held-to-maturity:
Unamortized Premium/(Discount)	13,567,000	11,428,000
Available-for-sale:
Unamortized Premium/(Discount)	13,567,000	11,428,000
Trading:
Unamortized Premium/(Discount)	13,567,000	11,428,000
Debt Securities, Trading \| USDA Securities:
Held-to-maturity:
Unamortized Premium/(Discount)	134,000	80,000
Available-for-sale:
Unamortized Premium/(Discount)	134,000	80,000
Trading:
Unamortized Premium/(Discount)	134,000	80,000
Farmer Mac Guaranteed Securities \| Farmer Mac Guaranteed Securities
Available-for-sale:
Fair Value	12,400,000	7,800,000
Trading:
Derivative, notional amount	275,400,000	250,100,000
Farmer Mac Guaranteed Securities \| Farmer Mac Guaranteed Securities:
Available-for-sale:
Unpaid Principal Balance	0	0
Amortized cost	12,297,000	10,622,000
Allowance for losses	0	0
Unrealized Gains	117,000	0
Unrealized Losses	0	(2,775,000)
Fair Value	12,414,000	7,847,000
Farmer Mac Guaranteed Securities \| Available-for-Sale Securities \| Farmer Mac Guaranteed Securities:
Held-to-maturity:
Unamortized Premium/(Discount)	12,297,000	10,622,000
Available-for-sale:
Unamortized Premium/(Discount)	12,297,000	10,622,000
Trading:
Unamortized Premium/(Discount)	12,297,000	10,622,000
AgVantage
Trading:
Available-for-sale, accrued interest excluded	29,800,000	51,500,000
Held-to-maturity, accrued interest excluded	42,100,000	44,400,000
Trading securities, accrued interest excluded	100,000	47,000
AgVantage \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unpaid Principal Balance	2,003,486,000	1,000,689,000
Amortized Cost	2,003,486,000	1,000,594,000
Allowance for losses	(132,000)	(59,000)
Unrealized Gains	10,097,000	353,000
Unrealized Losses	(12,764,000)	(54,098,000)
Fair Value	2,000,687,000	946,790,000
AgVantage \| Farmer Mac Guaranteed Securities:
Available-for-sale:
Unpaid Principal Balance	6,122,240,000	8,008,067,000
Amortized cost	6,123,510,000	8,008,873,000
Allowance for losses	(263,000)	(546,000)
Unrealized Gains	212,908,000	2,061,000
Unrealized Losses	(20,010,000)	(411,009,000)
Fair Value	6,316,145,000	7,599,379,000
AgVantage \| Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)	0	(95,000)
Available-for-sale:
Unamortized Premium/(Discount)	0	(95,000)
Trading:
Unamortized Premium/(Discount)	0	(95,000)
AgVantage \| Available-for-Sale Securities \| Farmer Mac Guaranteed Securities:
Held-to-maturity:
Unamortized Premium/(Discount)	1,270,000	806,000
Available-for-sale:
Unamortized Premium/(Discount)	1,270,000	806,000
Trading:
Unamortized Premium/(Discount)	1,270,000	806,000
Farmer Mac Guaranteed USDA Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unpaid Principal Balance	29,859,000	20,586,000
Amortized Cost	29,885,000	20,619,000
Allowance for losses	0	0
Unrealized Gains	1,162,000	2,000
Unrealized Losses	0	(856,000)
Fair Value	31,047,000	$ 19,765,000
Farmer Mac Guaranteed USDA Securities \| USDA Securities:
Trading:
Trading securities, weighted-average yield		4.84%
Farmer Mac Guaranteed USDA Securities \| Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)	26,000	$ 33,000
Available-for-sale:
Unamortized Premium/(Discount)	26,000	33,000
Trading:
Unamortized Premium/(Discount)	$ 26,000	$ 33,000

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