FARMER MAC GUARANTEED SECURITIES AND USDA SECURITIES - Schedule of Held-to-Maturity Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022
AgVantage
Weighted- Average Yield
Held-to-maturity, accrued interest excluded	$ 67,400	$ 44,400
Farmer Mac Guaranteed Securities and USDA Securities
Amortized Cost
Due within one year	1,862,524
Due after one year through five years	1,755,763
Due after five years through ten years	279,166
Due after ten years	2,669,996
Total, Amortized Cost	6,567,449
Fair Value
Due within one year	1,860,072
Due after one year through five years	1,716,466
Due after five years through ten years	244,568
Due after ten years	2,391,294
Total, Fair Value	$ 6,212,400
Weighted- Average Yield
Due within one year	5.69%
Due after one year through five years	4.62%
Due after five years through ten years	3.57%
Due after ten years	4.27%
Total, Weighted- Average Yield	4.76%