GUARANTEES AND COMMITMENTS - Credit Quality Indicators (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022
Total
Total	$ 11,183,408	$ 9,623,119
Agricultural Finance
Total
Current period charge-offs	4,498	0	$ 84
Infrastructure Finance
Year One
Total	1,158,427	618,946
Current period charge-offs	0	0
Year Two
Total	534,499	720,522
Current period charge-offs	0	0
Year Three
Total	642,402	187,746
Current period charge-offs	0	0
Year Four
Total	174,232	593,841
Current period charge-offs	0	0
Year Five
Total	574,135	701,937
Current period charge-offs	0	0
Prior
Total	1,229,626	611,548
Current period charge-offs	0	0
Revolving Loans - Amortized Cost Basis
Total	461,162	100,223
Current period charge-offs	0	0
Total
Total	4,774,483	3,534,763
Current period charge-offs	0	0	$ 0
Acceptable | Infrastructure Finance
Year One
Total	1,158,427	618,946
Year Two
Total	521,143	681,272
Year Three
Total	578,882	187,746
Year Four
Total	174,232	593,841
Year Five
Total	574,135	701,937
Prior
Total	1,229,626	611,548
Revolving Loans - Amortized Cost Basis
Total	461,162	100,223
Total
Total	4,697,607	3,495,513
Special mention | Infrastructure Finance
Year One
Total	0	0
Year Two
Total	0	9,850
Year Three
Total	34,388	0
Year Four
Total	0	0
Year Five
Total	0	0
Prior
Total	0	0
Revolving Loans - Amortized Cost Basis
Total	0	0
Total
Total	34,388	9,850
Substandard | Infrastructure Finance
Year One
Total	0	0
Year Two
Total	13,356	29,400
Year Three
Total	29,132	0
Year Four
Total	0	0
Year Five
Total	0	0
Prior
Total	0	0
Revolving Loans - Amortized Cost Basis
Total	0	0
Total
Total	42,488	29,400
Long-Term Standby Purchase Commitments and Guaranteed Securities
Total
Total	4,267,519	3,932,857
Long-Term Standby Purchase Commitments and Guaranteed Securities | Agricultural Finance
Year One
Total	70,757	169,429
Current period charge-offs	0	0
Year Two
Total	169,609	246,512
Current period charge-offs	0	0
Year Three
Total	273,717	517,862
Current period charge-offs	0	0
Year Four
Total	580,836	535,398
Current period charge-offs	0	0
Year Five
Total	594,297	266,882
Current period charge-offs	0	0
Prior
Total	1,379,249	1,256,770
Current period charge-offs	0	0
Revolving Loans - Amortized Cost Basis
Total	466,323	404,991
Current period charge-offs	0	0
Total
Total	3,534,788	3,397,844
Current period charge-offs	0	0
Long-Term Standby Purchase Commitments and Guaranteed Securities | Infrastructure Finance
Year One
Total	0	0
Current period charge-offs	0	0
Year Two
Total	0	0
Current period charge-offs	0	0
Year Three
Total	0	0
Current period charge-offs	0	0
Year Four
Total	0	0
Current period charge-offs	0	0
Year Five
Total	0	0
Current period charge-offs	0	0
Prior
Total	355,848	419,190
Current period charge-offs	0	0
Revolving Loans - Amortized Cost Basis
Total	376,883	115,823
Current period charge-offs	0	0
Total
Total	732,731	535,013
Current period charge-offs	0	0
Long-Term Standby Purchase Commitments and Guaranteed Securities | Acceptable | Agricultural Finance
Year One
Total	70,757	169,429
Year Two
Total	163,646	246,441
Year Three
Total	267,551	515,396
Year Four
Total	563,747	534,395
Year Five
Total	583,598	264,815
Prior
Total	1,312,988	1,185,811
Revolving Loans - Amortized Cost Basis
Total	452,909	391,335
Total
Total	3,415,196	3,307,622
Long-Term Standby Purchase Commitments and Guaranteed Securities | Acceptable | Infrastructure Finance
Year One
Total	0	0
Year Two
Total	0	0
Year Three
Total	0	0
Year Four
Total	0	0
Year Five
Total	0	0
Prior
Total	355,848	419,190
Revolving Loans - Amortized Cost Basis
Total	376,883	115,823
Total
Total	732,731	535,013
Long-Term Standby Purchase Commitments and Guaranteed Securities | Special mention | Agricultural Finance
Year One
Total	0	0
Year Two
Total	5,963	71
Year Three
Total	4,920	2,466
Year Four
Total	15,954	872
Year Five
Total	4,354	531
Prior
Total	44,964	44,631
Revolving Loans - Amortized Cost Basis
Total	12,197	8,565
Total
Total	88,352	57,136
Long-Term Standby Purchase Commitments and Guaranteed Securities | Special mention | Infrastructure Finance
Year One
Total	0	0
Year Two
Total	0	0
Year Three
Total	0	0
Year Four
Total	0	0
Year Five
Total	0	0
Prior
Total	0	0
Revolving Loans - Amortized Cost Basis
Total	0	0
Total
Total	0	0
Long-Term Standby Purchase Commitments and Guaranteed Securities | Substandard | Agricultural Finance
Year One
Total	0	0
Year Two
Total	0	0
Year Three
Total	1,246	0
Year Four
Total	1,135	131
Year Five
Total	6,345	1,536
Prior
Total	21,297	26,328
Revolving Loans - Amortized Cost Basis
Total	1,217	5,091
Total
Total	31,240	33,086
Long-Term Standby Purchase Commitments and Guaranteed Securities | Substandard | Infrastructure Finance
Year One
Total	0	0
Year Two
Total	0	0
Year Three
Total	0	0
Year Four
Total	0	0
Year Five
Total	0	0
Prior
Total	0	0
Revolving Loans - Amortized Cost Basis
Total	0	0
Total
Total	$ 0	$ 0