LOANS - Schedule of Financing Receivables Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023	Dec. 31, 2023
Total
Total	$ 9,837,962		$ 9,623,119
Agricultural Finance
Total
Current period charge-offs	0	$ 0
Farm & Ranch
Year One
Total	207,272		604,837
Current period charge-offs	0	0
Year Two
Total	611,432		1,207,742
Current period charge-offs	0	0
Year Three
Total	1,192,657		1,691,901
Current period charge-offs	0	0
Year Four
Total	1,667,156		1,149,903
Current period charge-offs	0	0
Year Five
Total	1,122,060		357,646
Current period charge-offs	0	0
Prior
Total	1,475,276		1,148,725
Current period charge-offs	0	0
Revolving Loans - Amortized Cost Basis
Total	381,087		404,957
Current period charge-offs	0	0
Total
Total	6,656,940		6,565,711
Current period charge-offs	0	0
Corporate AgFinance
Year One
Total	34,521		207,279
Current period charge-offs	0	0
Year Two
Total	204,717		112,444
Current period charge-offs	0	0
Year Three
Total	91,839		277,400
Current period charge-offs	0	0
Year Four
Total	272,595		173,980
Current period charge-offs	0	0
Year Five
Total	172,484		119,685
Current period charge-offs	0	0
Prior
Total	226,337		112,947
Current period charge-offs	0	0
Revolving Loans - Amortized Cost Basis
Total	256,013		255,988
Current period charge-offs	0	0
Total
Total	1,258,506		1,259,723
Current period charge-offs	0	0
Rural Infrastructure Finance
Year One
Total	192,160		618,946
Current period charge-offs	0	0
Year Two
Total	572,095		720,522
Current period charge-offs	0	0
Year Three
Total	700,374		187,746
Current period charge-offs	0	0
Year Four
Total	189,652		593,841
Current period charge-offs	0	0
Year Five
Total	585,661		701,937
Current period charge-offs	0	0
Prior
Total	1,283,649		611,548
Current period charge-offs	0	0
Revolving Loans - Amortized Cost Basis
Total	163,162		100,223
Current period charge-offs	0	0
Total
Total	3,686,753		3,534,763
Current period charge-offs	0	$ 0
Acceptable | Farm & Ranch
Year One
Total	190,820		530,956
Year Two
Total	509,485		1,137,226
Year Three
Total	1,135,915		1,653,780
Year Four
Total	1,601,660		1,120,917
Year Five
Total	1,082,703		323,922
Prior
Total	1,349,086		1,068,862
Revolving Loans - Amortized Cost Basis
Total	354,735		385,766
Total
Total	6,224,404		6,221,429
Acceptable | Corporate AgFinance
Year One
Total	34,521		207,279
Year Two
Total	204,717		97,922
Year Three
Total	77,402		261,992
Year Four
Total	257,391		123,158
Year Five
Total	122,517		99,352
Prior
Total	209,987		112,947
Revolving Loans - Amortized Cost Basis
Total	242,494		254,325
Total
Total	1,149,029		1,156,975
Acceptable | Rural Infrastructure Finance
Year One
Total	192,160		618,946
Year Two
Total	572,095		681,272
Year Three
Total	665,560		187,746
Year Four
Total	189,652		593,841
Year Five
Total	585,661		701,937
Prior
Total	1,283,649		611,548
Revolving Loans - Amortized Cost Basis
Total	163,162		100,223
Total
Total	3,651,939		3,495,513
Special mention | Farm & Ranch
Year One
Total	16,452		70,524
Year Two
Total	90,681		46,529
Year Three
Total	29,227		27,957
Year Four
Total	36,893		11,591
Year Five
Total	4,387		4,782
Prior
Total	31,355		21,257
Revolving Loans - Amortized Cost Basis
Total	9,093		8,777
Total
Total	218,088		191,417
Special mention | Corporate AgFinance
Year One
Total	0		0
Year Two
Total	0		14,522
Year Three
Total	14,437		15,408
Year Four
Total	15,204		50,822
Year Five
Total	49,967		20,333
Prior
Total	16,350		0
Revolving Loans - Amortized Cost Basis
Total	2,072		1,663
Total
Total	98,030		102,748
Special mention | Rural Infrastructure Finance
Year One
Total	0		0
Year Two
Total	0		9,850
Year Three
Total	34,814		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	34,814		9,850
Substandard | Farm & Ranch
Year One
Total	0		3,357
Year Two
Total	11,266		23,987
Year Three
Total	27,515		10,164
Year Four
Total	28,603		17,395
Year Five
Total	34,970		28,942
Prior
Total	94,835		58,606
Revolving Loans - Amortized Cost Basis
Total	17,259		10,414
Total
Total	214,448		152,865
Substandard | Corporate AgFinance
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	11,447		0
Total
Total	11,447		0
Substandard | Rural Infrastructure Finance
Year One
Total	0		0
Year Two
Total	0		29,400
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		$ 29,400