EQUITY - Quarterly Dividends Paid by Farmer Mac (Details) - $ / shares						3 Months Ended												12 Months Ended
	May 27, 2021	Aug. 20, 2020	May 20, 2020	May 13, 2019	Jun. 20, 2014	Dec. 31, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Series C
Class of Stock [Line Items]
Preferred stock, dividend rate					6.00%													6.00%	6.00%	6.00%
Preferred stock dividends (in dollars per share)						$ 0.3750	$ 0.3750	$ 0.3750	$ 0.3750	$ 0.3750	$ 0.3750	$ 0.3750	$ 0.3750	$ 0.3750	$ 0.3750	$ 0.3750	$ 0.3750
Series D
Class of Stock [Line Items]
Preferred stock, dividend rate				5.70%														5.70%	5.70%	5.70%
Preferred stock dividends (in dollars per share)						0.3563	0.3563	0.3563	0.3563	0.3563	0.3563	0.3563	0.3563	0.3563	0.3563	0.3563	0.3563
Series E
Class of Stock [Line Items]
Preferred stock, dividend rate			5.75%															5.75%	5.75%	5.75%
Preferred stock dividends (in dollars per share)						0.3594	0.3594	0.3594	0.3594	0.3594	0.3594	0.3594	0.3594	0.3594	0.3594	0.3594	0.3594
Series F
Class of Stock [Line Items]
Preferred stock, dividend rate		5.25%																5.25%	5.25%	5.25%
Preferred stock dividends (in dollars per share)						0.3281	0.3281	0.3281	0.3281	0.3281	0.3281	0.3281	0.3281	0.3281	0.3281	0.3281	0.3281
Series G
Class of Stock [Line Items]
Preferred stock, dividend rate	4.875%																	4.875%	4.875%	4.875%
Preferred stock dividends (in dollars per share)						$ 0.3047	$ 0.3047	$ 0.3047	$ 0.3047	$ 0.3047	$ 0.3047	$ 0.3047	$ 0.3047	$ 0.3047	$ 0.3047	$ 0.1693	$ 0