Farmer Mac Guaranteed Securities and USDA Securities - Unrealized Loss Position (Details) - USD ($) $ in Thousands	Dec. 31, 2022	Dec. 31, 2021
Unrealized loss position for less than 12 months
Unrealized loss position for less than 12 months, Fair Value	$ 2,819,885	$ 1,989,439
Unrealized loss position for less than 12 months, Unrealized Loss	(96,252)	(9,419)
Unrealized loss position for more than 12 months
Unrealized loss position for more than 12 months, Fair Value	1,254,553	107,592
Unrealized loss position for more than 12 months, Unrealized Loss	(98,280)	(1,055)
Operating Segments
Unrealized loss position for less than 12 months
Unrealized loss position for less than 12 months, Fair Value	4,649,943
Unrealized loss position for less than 12 months, Unrealized Loss	(270,661)
Unrealized loss position for more than 12 months
Unrealized loss position for more than 12 months, Fair Value	1,548,551
Unrealized loss position for more than 12 months, Unrealized Loss	(143,123)
USDA Securities:
Unrealized loss position for less than 12 months
Fair Value	2,086,108
Unrealized Loss	(312,824)
Unrealized loss position for more than 12 months
Fair Value	0
Unrealized Loss	0
Farmer Mac Guaranteed Securities and USDA Securities
Unrealized loss position for less than 12 months
Fair Value	2,654,532
Unrealized Loss	(325,135)
Unrealized loss position for more than 12 months
Fair Value	382,358
Unrealized Loss	(42,643)
AgVantage | Farmer Mac Guaranteed Securities
Unrealized loss position for less than 12 months
Fair Value	548,634	1,387,236
Unrealized Loss	(11,455)	(12,764)
Unrealized loss position for more than 12 months
Fair Value	382,358	0
Unrealized Loss	(42,643)	0
Unrealized loss position for less than 12 months
Unrealized loss position for less than 12 months, Fair Value		1,867,364
Unrealized loss position for less than 12 months, Unrealized Loss		(17,263)
Unrealized loss position for more than 12 months
Unrealized loss position for more than 12 months, Fair Value		90,971
Unrealized loss position for more than 12 months, Unrealized Loss		$ (2,747)
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	4,642,096
Unrealized loss position for less than 12 months, Unrealized Loss	(267,886)
Unrealized loss position for more than 12 months
Unrealized loss position for more than 12 months, Fair Value	1,548,551
Unrealized loss position for more than 12 months, Unrealized Loss	(143,123)
USDA Securities | Farmer Mac Guaranteed Securities
Unrealized loss position for less than 12 months
Fair Value	19,790
Unrealized Loss	(856)
Unrealized loss position for more than 12 months
Fair Value	0
Unrealized Loss	0
USDA Securities | Farmer Mac Guaranteed Securities | Operating Segments
Unrealized loss position for less than 12 months
Unrealized loss position for less than 12 months, Fair Value	7,847
Unrealized loss position for less than 12 months, Unrealized Loss	(2,775)
Unrealized loss position for more than 12 months
Unrealized loss position for more than 12 months, Fair Value	0
Unrealized loss position for more than 12 months, Unrealized Loss	$ 0