LOANS - Unpaid Principal Balances by Delinquency Status (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	$ 11,183,408	$ 9,623,119
Nonaccrual loans	168,915	65,236
Total Loans	13,609,172	11,360,197
Nonaccrual loans with no associated allowance	41,500	25,700
Interest received on nonaccrual loans	4,900	2,600
Total Agricultural Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Nonaccrual loans	168,915	65,236
Total Loans	8,834,689	7,825,434
Farm & Ranch
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	7,453,015	6,565,711
Nonaccrual loans	123,546	65,236
Total Loans	7,453,015	6,565,711
Corporate AgFinance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	1,381,674	1,259,723
Nonaccrual loans	45,369	0
Total Loans	1,381,674	1,259,723
Infrastructure Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	4,774,483	3,534,763
Nonaccrual loans	0	0
Total Loans	4,774,483	3,534,763
Current
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	13,410,152	11,264,691
Current | Total Agricultural Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	8,635,669	7,729,928
Current | Farm & Ranch
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	7,299,364	6,470,205
Current | Corporate AgFinance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	1,336,305	1,259,723
Current | Infrastructure Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	4,774,483	3,534,763
Total Past Due
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	30,105	30,270
Total Past Due | Total Agricultural Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	30,105	30,270
Total Past Due | Farm & Ranch
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	30,105	30,270
Total Past Due | Corporate AgFinance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	0	0
Total Past Due | Infrastructure Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	0	0
30-59 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	16,478	15,326
30-59 Days | Total Agricultural Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	16,478	15,326
30-59 Days | Farm & Ranch
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	16,478	15,326
30-59 Days | Corporate AgFinance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	0	0
30-59 Days | Infrastructure Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	0	0
60-89 Days
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	7,268	3,953
60-89 Days | Total Agricultural Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	7,268	3,953
60-89 Days | Farm & Ranch
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	7,268	3,953
60-89 Days | Corporate AgFinance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	0	0
60-89 Days | Infrastructure Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	0	0
90 Days and Greater
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	6,359	10,991
90 Days and Greater | Total Agricultural Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	6,359	10,991
90 Days and Greater | Farm & Ranch
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	6,359	10,991
90 Days and Greater | Corporate AgFinance
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	0	0
90 Days and Greater | Infrastructure Finance loans
Financing Receivable, Recorded Investment, Past Due [Line Items]
Loans held for investment, at amortized cost	$ 0	$ 0