Farmer Mac Guaranteed Securities and USDA Securities - Schedule of On-Balance Sheet Securities (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021	Jun. 30, 2022
Farmer Mac Guaranteed Securities
Held-to-maturity:
Unpaid Principal Balance		$ 2,033,345	$ 1,689,538
Amortized Cost		2,033,371	1,689,508
Allowance for losses		(132)	(39)
Unrealized Gains		11,259	84
Unrealized Losses		(12,764)	(43,114)
Fair Value		2,031,734	1,646,439
Available-for-sale:
Amortized cost			6,679,196
Fair Value			6,450,212
USDA Securities:
Held-to-maturity:
Unpaid Principal Balance		2,411,649	2,405,519
Amortized Cost		2,436,331	2,430,830
Allowance for losses		0	0
Unrealized Gains		95,741	369
Unrealized Losses		0	(180,590)
Fair Value		2,532,072	2,250,609
Trading:
Unpaid Principal Balance		4,299	2,248
Amortized Cost		4,433	2,341
Allowance for losses		0	0
Unrealized Gains	$ 0	1
Unrealized Losses	$ (66)	(33)
Fair Value		$ 4,401	2,275
Trading securities, weighted-average yield		5.05%
Farmer Mac Guaranteed Securities and USDA Securities
Held-to-maturity:
Unpaid Principal Balance		$ 4,444,994	4,095,057
Amortized Cost		4,469,702	4,120,338
Allowance for losses		(132)	(39)
Unrealized Gains		107,000	453
Unrealized Losses		(12,764)	(223,704)
Fair Value		4,563,806	3,897,048
Farmer Mac Guaranteed Securities:
Available-for-sale:
Unpaid Principal Balance		6,122,240	6,666,474
Amortized cost		6,135,807	6,679,196
Allowance for losses		(263)	(597)
Unrealized Gains		213,025	3,517
Unrealized Losses		(20,010)	(231,904)
Fair Value		6,328,559	6,450,212
Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)		26	(30)
Available-for-sale:
Unamortized Premium/(Discount)		26	(30)
Trading:
Unamortized Premium/(Discount)		26	(30)
Held-to-Maturity Securities \| USDA Securities:
Held-to-maturity:
Unamortized Premium/(Discount)		24,682	25,311
Available-for-sale:
Unamortized Premium/(Discount)		24,682	25,311
Trading:
Unamortized Premium/(Discount)		24,682	25,311
Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities and USDA Securities
Held-to-maturity:
Unamortized Premium/(Discount)		24,708	25,281
Available-for-sale:
Unamortized Premium/(Discount)		24,708	25,281
Trading:
Unamortized Premium/(Discount)		24,708	25,281
Available-for-Sale Securities \| Farmer Mac Guaranteed Securities:
Held-to-maturity:
Unamortized Premium/(Discount)		13,567	12,722
Available-for-sale:
Unamortized Premium/(Discount)		13,567	12,722
Trading:
Unamortized Premium/(Discount)		13,567	12,722
Debt Securities, Trading \| USDA Securities:
Held-to-maturity:
Unamortized Premium/(Discount)		134	93
Available-for-sale:
Unamortized Premium/(Discount)		134	93
Trading:
Unamortized Premium/(Discount)		134	93
Farmer Mac Guaranteed Securities \| Farmer Mac Guaranteed Securities
Available-for-sale:
Fair Value		12,400	9,800
Trading:
Derivative, notional amount		275,400	255,700
Farmer Mac Guaranteed Securities \| Farmer Mac Guaranteed Securities:
Available-for-sale:
Unpaid Principal Balance		0	0
Amortized cost		12,297	11,561
Allowance for losses		0	0
Unrealized Gains		117	0
Unrealized Losses		0	(1,745)
Fair Value		12,414	9,816
Farmer Mac Guaranteed Securities \| Available-for-Sale Securities \| Farmer Mac Guaranteed Securities:
Held-to-maturity:
Unamortized Premium/(Discount)		12,297	11,561
Available-for-sale:
Unamortized Premium/(Discount)		12,297	11,561
Trading:
Unamortized Premium/(Discount)		12,297	11,561
AgVantage
Trading:
Available-for-sale, accrued interest excluded		29,800	36,400
Held-to-maturity, accrued interest excluded		42,100	34,000
Trading securities, accrued interest excluded		100	100
AgVantage \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unpaid Principal Balance		2,003,486	1,667,898
Amortized Cost		2,003,486	1,667,898
Allowance for losses		(132)	(39)
Unrealized Gains		10,097	74
Unrealized Losses		(12,764)	(42,432)
Fair Value		2,000,687	1,625,501
AgVantage \| Farmer Mac Guaranteed Securities:
Available-for-sale:
Unpaid Principal Balance		6,122,240	6,666,474
Amortized cost		6,123,510	6,667,635
Allowance for losses		(263)	(597)
Unrealized Gains		212,908	3,517
Unrealized Losses		(20,010)	(230,159)
Fair Value		6,316,145	6,440,396
AgVantage \| Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)		0	0
Available-for-sale:
Unamortized Premium/(Discount)		0	0
Trading:
Unamortized Premium/(Discount)		0	0
AgVantage \| Available-for-Sale Securities \| Farmer Mac Guaranteed Securities:
Held-to-maturity:
Unamortized Premium/(Discount)		1,270	1,161
Available-for-sale:
Unamortized Premium/(Discount)		1,270	1,161
Trading:
Unamortized Premium/(Discount)		1,270	1,161
Farmer Mac Guaranteed USDA Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unpaid Principal Balance		29,859	21,640
Amortized Cost		29,885	21,610
Allowance for losses		0	0
Unrealized Gains		1,162	10
Unrealized Losses		0	(682)
Fair Value		31,047	$ 20,938
Farmer Mac Guaranteed USDA Securities \| USDA Securities:
Trading:
Trading securities, weighted-average yield			4.96%
Farmer Mac Guaranteed USDA Securities \| Held-to-Maturity Securities \| Farmer Mac Guaranteed Securities
Held-to-maturity:
Unamortized Premium/(Discount)		26	$ (30)
Available-for-sale:
Unamortized Premium/(Discount)		26	(30)
Trading:
Unamortized Premium/(Discount)		$ 26	$ (30)

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