FARMER MAC GUARANTEED SECURITIES AND USDA SECURITIES - Unrealized Loss Position (Details) - USD ($) $ in Thousands	Sep. 30, 2024	Dec. 31, 2023
Unrealized loss position for less than 12 months
Unrealized loss position for less than 12 months, fair value	$ 586,175	$ 1,143,468
Unrealized loss position for less than 12 months, unrealized loss	(908)	(9,278)
Unrealized loss position for more than 12 months
Unrealized loss position for more than 12 months, fair value	2,163,973	2,611,155
Unrealized loss position for more than 12 months, unrealized loss	(102,112)	(141,743)
Operating Segments
Unrealized loss position for less than 12 months
Unrealized loss position for less than 12 months, fair value	199,910	508,182
Unrealized loss position for less than 12 months, unrealized loss	(90)	(5,716)
Unrealized loss position for more than 12 months
Unrealized loss position for more than 12 months, fair value	3,853,189	4,043,431
Unrealized loss position for more than 12 months, unrealized loss	(217,077)	(303,695)
Farmer Mac Guaranteed Securities and USDA Securities
Unrealized loss position for less than 12 months
Fair Value	1,572,729	2,070,770
Unrealized Loss	(6,309)	(6,705)
Unrealized loss position for more than 12 months
Fair Value	2,814,044	2,757,541
Unrealized Loss	(251,421)	(353,335)
USDA Securities
Unrealized loss position for less than 12 months
Fair Value	7,569	0
Unrealized Loss	(16)	0
Unrealized loss position for more than 12 months
Fair Value	2,099,685	2,023,801
Unrealized Loss	(232,745)	(319,783)
AgVantage | Farmer Mac Guaranteed Securities
Unrealized loss position for less than 12 months
Fair Value	1,536,693	2,070,770
Unrealized Loss	(5,100)	(6,705)
Unrealized loss position for more than 12 months
Fair Value	705,981	725,347
Unrealized Loss	(18,187)	(32,746)
Unrealized loss position for less than 12 months
Unrealized loss position for less than 12 months, fair value		508,182
Unrealized loss position for less than 12 months, unrealized loss		(5,716)
Unrealized loss position for more than 12 months
Unrealized loss position for more than 12 months, fair value		4,043,431
Unrealized loss position for more than 12 months, unrealized loss		(303,695)
AgVantage | Farmer Mac Guaranteed Securities | Operating Segments
Unrealized loss position for less than 12 months
Unrealized loss position for less than 12 months, fair value	199,910
Unrealized loss position for less than 12 months, unrealized loss	(90)
Unrealized loss position for more than 12 months
Unrealized loss position for more than 12 months, fair value	3,853,189
Unrealized loss position for more than 12 months, unrealized loss	(217,077)
USDA Securities | Farmer Mac Guaranteed Securities
Unrealized loss position for less than 12 months
Fair Value	28,467	0
Unrealized Loss	(1,193)	0
Unrealized loss position for more than 12 months
Fair Value	8,378	8,393
Unrealized Loss	$ (489)	$ (806)