GUARANTEES AND COMMITMENTS - Credit Quality Indicators (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Total
Total	$ 9,623,119	$ 9,008,979
Rural Infrastructure Finance
Year One
Total	618,946	741,021
Current period charge-offs	0	0
Year Two
Total	720,522	220,420
Current period charge-offs	0	0
Year Three
Total	187,746	629,223
Current period charge-offs	0	0
Year Four
Total	593,841	739,270
Current period charge-offs	0	0
Year Five
Total	701,937	7,932
Current period charge-offs	0	0
Prior
Total	611,548	649,830
Current period charge-offs	0	0
Revolving Loans - Amortized Cost Basis
Total	100,223	33,570
Current period charge-offs	0	0
Total
Total	3,534,763	3,021,266
Current period charge-offs	0	0
Acceptable | Rural Infrastructure Finance
Year One
Total	618,946	741,021
Year Two
Total	681,272	220,420
Year Three
Total	187,746	629,223
Year Four
Total	593,841	739,270
Year Five
Total	701,937	7,932
Prior
Total	611,548	649,830
Revolving Loans - Amortized Cost Basis
Total	100,223	33,570
Total
Total	3,495,513	3,021,266
Special mention | Rural Infrastructure Finance
Year One
Total	0	0
Year Two
Total	9,850	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	9,850	0
Substandard | Rural Infrastructure Finance
Year One
Total	0	0
Year Two
Total	29,400	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	29,400	0
Rural Infrastructure Finance:
Total
Total	3,932,857	3,714,184
Rural Infrastructure Finance: | Agricultural Finance
Year One
Total	169,429	202,998
Current period charge-offs	0	0
Year Two
Total	246,512	497,588
Current period charge-offs	0	0
Year Three
Total	517,862	537,752
Current period charge-offs	0	0
Year Four
Total	535,398	254,293
Current period charge-offs	0	0
Year Five
Total	266,882	212,165
Current period charge-offs	0	0
Prior
Total	1,256,770	1,183,111
Current period charge-offs	0	0
Revolving Loans - Amortized Cost Basis
Total	404,991	303,085
Current period charge-offs	0	0
Total
Total	3,397,844	3,190,992
Current period charge-offs	0	0
Rural Infrastructure Finance: | Acceptable | Agricultural Finance
Year One
Total	169,429	202,998
Year Two
Total	246,441	496,269
Year Three
Total	515,396	535,798
Year Four
Total	534,395	254,293
Year Five
Total	264,815	207,379
Prior
Total	1,185,811	1,107,834
Revolving Loans - Amortized Cost Basis
Total	391,335	296,508
Total
Total	3,307,622	3,101,079
Rural Infrastructure Finance: | Special mention | Agricultural Finance
Year One
Total	0	0
Year Two
Total	71	1,319
Year Three
Total	2,466	1,778
Year Four
Total	872	0
Year Five
Total	531	1,198
Prior
Total	44,631	42,680
Revolving Loans - Amortized Cost Basis
Total	8,565	3,205
Total
Total	57,136	50,180
Rural Infrastructure Finance: | Substandard | Agricultural Finance
Year One
Total	0	0
Year Two
Total	0	0
Year Three
Total	0	176
Year Four
Total	131	0
Year Five
Total	1,536	3,588
Prior
Total	26,328	32,597
Revolving Loans - Amortized Cost Basis
Total	5,091	3,372
Total
Total	33,086	39,733
Long-Term Standby Purchase Commitments | Rural 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	419,190	470,659
Current period charge-offs	0	0
Revolving Loans - Amortized Cost Basis
Total	115,823	52,533
Current period charge-offs	0	0
Total
Total	535,013	523,192
Current period charge-offs	0	0
Long-Term Standby Purchase Commitments | Acceptable | Rural 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	419,190	470,659
Revolving Loans - Amortized Cost Basis
Total	115,823	52,533
Total
Total	535,013	523,192
Long-Term Standby Purchase Commitments | Special mention | Rural 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 | Substandard | Rural 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