GUARANTEES AND COMMITMENTS - Unpaid Principal Balances by Delinquency Status (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Guarantor Obligations [Line Items]
Total Loans	$ 11,183,408	$ 9,623,119
Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	4,267,519	3,932,857
Current
Guarantor Obligations [Line Items]
Total Loans	13,410,152	11,264,691
Current | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	4,257,137	3,925,931
Total Past Due
Guarantor Obligations [Line Items]
Total Loans	30,105	30,270
Total Past Due | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	10,382	6,926
30-59 Days
Guarantor Obligations [Line Items]
Total Loans	16,478	15,326
30-59 Days | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	1,421	2,776
60-89 Days
Guarantor Obligations [Line Items]
Total Loans	7,268	3,953
60-89 Days | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	1,358	2,366
90 Days and Greater
Guarantor Obligations [Line Items]
Total Loans	6,359	10,991
90 Days and Greater | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	7,603	1,784
Agricultural Finance | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	3,534,788	3,397,844
Agricultural Finance | Current
Guarantor Obligations [Line Items]
Total Loans	8,635,669	7,729,928
Agricultural Finance | Current | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	3,524,406	3,390,918
Agricultural Finance | Total Past Due
Guarantor Obligations [Line Items]
Total Loans	30,105	30,270
Agricultural Finance | Total Past Due | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	10,382	6,926
Agricultural Finance | 30-59 Days
Guarantor Obligations [Line Items]
Total Loans	16,478	15,326
Agricultural Finance | 30-59 Days | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	1,421	2,776
Agricultural Finance | 60-89 Days
Guarantor Obligations [Line Items]
Total Loans	7,268	3,953
Agricultural Finance | 60-89 Days | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	1,358	2,366
Agricultural Finance | 90 Days and Greater
Guarantor Obligations [Line Items]
Total Loans	6,359	10,991
Agricultural Finance | 90 Days and Greater | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	7,603	1,784
Infrastructure Finance
Guarantor Obligations [Line Items]
Total Loans	4,774,483	3,534,763
Infrastructure Finance | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	732,731	535,013
Infrastructure Finance | Current
Guarantor Obligations [Line Items]
Total Loans	4,774,483	3,534,763
Infrastructure Finance | Current | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	732,731	535,013
Infrastructure Finance | Total Past Due
Guarantor Obligations [Line Items]
Total Loans	0	0
Infrastructure Finance | Total Past Due | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	0	0
Infrastructure Finance | 30-59 Days
Guarantor Obligations [Line Items]
Total Loans	0	0
Infrastructure Finance | 30-59 Days | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	0	0
Infrastructure Finance | 60-89 Days
Guarantor Obligations [Line Items]
Total Loans	0	0
Infrastructure Finance | 60-89 Days | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	0	0
Infrastructure Finance | 90 Days and Greater
Guarantor Obligations [Line Items]
Total Loans	0	0
Infrastructure Finance | 90 Days and Greater | Long-Term Standby Purchase Commitments and Guaranteed Securities
Guarantor Obligations [Line Items]
Total Loans	$ 0	$ 0