FARMER MAC GUARANTEED SECURITIES AND USDA SECURITIES - Schedule of Available-for-Sale Securities (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
AgVantage
Weighted- Average Yield
Available-for-sale, accrued interest excluded	$ 57,500	$ 47,200
Farmer Mac Guaranteed Securities
Amortized Cost
Due within one year	871,516
Due after one year through five years	3,102,516
Due after five years through ten years	730,000
Due after ten years	1,131,626
Available-for-sale, amortized cost	5,835,658
Fair Value
Due within one year	869,749
Due after one year through five years	3,010,710
Due after five years through ten years	650,677
Due after ten years	983,410
Total fair value	$ 5,514,546
Weighted- Average Yield
Due within one year	4.20%
Due after one year through five years	3.73%
Due after five years through ten years	3.26%
Due after ten years	3.82%
Weighted-average yield	3.75%