FAIR VALUE DISCLOSURES - Summary of Carrying Value and Fair Value (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Dec. 31, 2023
Financial assets:
Financial derivatives	$ 53,686	$ 37,478
Guarantee and commitment fees receivable	46,754	49,832
Financial liabilities:
Financial derivatives	118,421	117,131
Guarantee and commitment obligation	44,758	47,563
Fair Value
Financial assets:
Cash and cash equivalents	922,961	888,707
Loans	11,114,479	10,426,021
Financial derivatives	53,686	37,478
Guarantee and commitment fees receivable	54,220	58,465
Financial liabilities:
Notes payable	25,848,684	25,670,971
Debt securities of consolidated trusts held by third parties	1,577,031	1,268,563
Financial derivatives	118,421	117,131
Guarantee and commitment obligation	52,224	56,195
Fair Value | Investment Securities
Financial assets:
Marketable securities	5,265,609	4,981,249
Fair Value | Farmer Mac Guaranteed Securities
Financial assets:
Marketable securities	9,304,940	9,710,074
Fair Value | USDA Securities
Financial assets:
Marketable securities	1,996,586	2,036,046
Carrying Amount
Financial assets:
Cash and cash equivalents	922,961	888,707
Loans	11,786,508	11,039,349
Financial derivatives	53,686	37,478
Guarantee and commitment fees receivable	46,754	49,832
Financial liabilities:
Notes payable	26,542,671	26,336,542
Debt securities of consolidated trusts held by third parties	1,662,549	1,351,069
Financial derivatives	118,421	117,131
Guarantee and commitment obligation	44,758	47,563
Carrying Amount | Investment Securities
Financial assets:
Marketable securities	5,265,383	4,979,504
Carrying Amount | Farmer Mac Guaranteed Securities
Financial assets:
Marketable securities	9,328,219	9,745,548
Carrying Amount | USDA Securities
Financial assets:
Marketable securities	$ 2,331,561	$ 2,355,412