LOANS - Schedule of Financing Receivables Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2026	Sep. 30, 2025	Sep. 30, 2026	Sep. 30, 2025	Dec. 31, 2025
Total
Total	$ 16,689,890		$ 16,689,890		$ 13,877,051
Charge-offs	8,262	$ 4,423	10,479	$ 7,263
Agricultural Finance - Farm & Ranch loans
Year One
Total	1,786,009		1,786,009		1,753,112
Charge-offs	0	0	0	0
Year Two
Total	1,635,392		1,635,392		1,075,523
Charge-offs	0	0	0	0
Year Three
Total	951,024		951,024		515,419
Charge-offs	0	0	0	0
Year Four
Total	450,954		450,954		1,029,518
Charge-offs	41	0	41	0
Year Five
Total	922,484		922,484		1,506,921
Charge-offs	0	721	0	721
Prior
Total	3,322,450		3,322,450		2,140,373
Charge-offs	0	522	42	1,687
Revolving Loans - Amortized Cost Basis
Total	470,504		470,504		463,882
Charge-offs	0	0	0	1,675
Total
Total	9,538,817		9,538,817		8,484,748
Charge-offs	41	1,243	83	4,083
Agricultural Finance - Corporate AgFinance loans
Year One
Total	124,136		124,136		364,140
Charge-offs	0	0	0	0
Year Two
Total	329,350		329,350		193,774
Charge-offs	0	0	0	0
Year Three
Total	178,282		178,282		133,359
Charge-offs	0	0	0	0
Year Four
Total	116,262		116,262		58,073
Charge-offs	0	0	0	0
Year Five
Total	57,400		57,400		141,291
Charge-offs	0	3,180	0	3,180
Prior
Total	422,717		422,717		320,396
Charge-offs	0	0	1,828	0
Revolving Loans - Amortized Cost Basis
Total	298,099		298,099		249,658
Charge-offs	0	0	347	0
Total
Total	1,526,246		1,526,246		1,460,691
Charge-offs	0	3,180	2,175	3,180
Infrastructure Finance loans
Year One
Total	1,483,234		1,483,234		1,652,127
Charge-offs	0	0	0	0
Year Two
Total	1,613,541		1,613,541		1,238,560
Charge-offs	0	0	0	0
Year Three
Total	1,134,909		1,134,909		625,284
Charge-offs	0	0	0	0
Year Four
Total	545,231		545,231		571,170
Charge-offs	8,221	0	8,221	0
Year Five
Total	489,368		489,368		175,962
Charge-offs	0	0	0	0
Prior
Total	1,771,626		1,771,626		1,668,596
Charge-offs	0	0	0	0
Revolving Loans - Amortized Cost Basis
Total	1,356,738		1,356,738		829,382
Charge-offs	0	0	0	0
Total
Total	8,394,647		8,394,647		6,761,081
Charge-offs	8,221	$ 0	8,221	$ 0
Acceptable | Agricultural Finance - Farm & Ranch loans
Year One
Total	1,561,449		1,561,449		1,474,950
Year Two
Total	1,413,980		1,413,980		938,955
Year Three
Total	800,780		800,780		451,188
Year Four
Total	393,964		393,964		921,048
Year Five
Total	822,460		822,460		1,447,158
Prior
Total	3,097,807		3,097,807		1,964,423
Revolving Loans - Amortized Cost Basis
Total	394,702		394,702		418,798
Total
Total	8,485,142		8,485,142		7,616,520
Acceptable | Agricultural Finance - Corporate AgFinance loans
Year One
Total	107,993		107,993		364,140
Year Two
Total	329,350		329,350		177,260
Year Three
Total	173,994		173,994		120,428
Year Four
Total	91,364		91,364		58,073
Year Five
Total	57,400		57,400		131,421
Prior
Total	327,304		327,304		232,710
Revolving Loans - Amortized Cost Basis
Total	273,254		273,254		212,487
Total
Total	1,360,659		1,360,659		1,296,519
Acceptable | Infrastructure Finance loans
Year One
Total	1,483,234		1,483,234		1,652,127
Year Two
Total	1,613,541		1,613,541		1,238,560
Year Three
Total	1,134,909		1,134,909		578,518
Year Four
Total	499,910		499,910		488,572
Year Five
Total	410,675		410,675		175,962
Prior
Total	1,718,767		1,718,767		1,668,596
Revolving Loans - Amortized Cost Basis
Total	1,356,738		1,356,738		829,382
Total
Total	8,217,774		8,217,774		6,631,717
Special mention | Agricultural Finance - Farm & Ranch loans
Year One
Total	213,177		213,177		260,579
Year Two
Total	160,598		160,598		95,950
Year Three
Total	72,842		72,842		28,693
Year Four
Total	10,104		10,104		37,269
Year Five
Total	15,695		15,695		25,928
Prior
Total	49,769		49,769		35,505
Revolving Loans - Amortized Cost Basis
Total	40,614		40,614		22,958
Total
Total	562,799		562,799		506,882
Special mention | Agricultural Finance - Corporate AgFinance loans
Year One
Total	16,143		16,143		0
Year Two
Total	0		0		16,514
Year Three
Total	0		0		7,273
Year Four
Total	0		0		0
Year Five
Total	0		0		0
Prior
Total	35,303		35,303		45,753
Revolving Loans - Amortized Cost Basis
Total	5,654		5,654		17,954
Total
Total	57,100		57,100		87,494
Special mention | Infrastructure Finance loans
Year One
Total	0		0		0
Year Two
Total	0		0		0
Year Three
Total	0		0		18,863
Year Four
Total	26,747		26,747		37,244
Year Five
Total	50,072		50,072		0
Prior
Total	0		0		0
Revolving Loans - Amortized Cost Basis
Total	0		0		0
Total
Total	76,819		76,819		56,107
Substandard | Agricultural Finance - Farm & Ranch loans
Year One
Total	11,383		11,383		17,583
Year Two
Total	60,814		60,814		40,618
Year Three
Total	77,402		77,402		35,538
Year Four
Total	46,886		46,886		71,201
Year Five
Total	84,329		84,329		33,835
Prior
Total	174,874		174,874		140,445
Revolving Loans - Amortized Cost Basis
Total	35,188		35,188		22,126
Total
Total	490,876		490,876		361,346
Substandard | Agricultural Finance - Corporate AgFinance loans
Year One
Total	0		0		0
Year Two
Total	0		0		0
Year Three
Total	4,288		4,288		5,658
Year Four
Total	24,898		24,898		0
Year Five
Total	0		0		9,870
Prior
Total	60,110		60,110		41,933
Revolving Loans - Amortized Cost Basis
Total	19,191		19,191		19,217
Total
Total	108,487		108,487		76,678
Substandard | Infrastructure Finance loans
Year One
Total	0		0		0
Year Two
Total	0		0		0
Year Three
Total	0		0		27,903
Year Four
Total	18,574		18,574		45,354
Year Five
Total	28,621		28,621		0
Prior
Total	52,859		52,859		0
Revolving Loans - Amortized Cost Basis
Total	0		0		0
Total
Total	$ 100,054		$ 100,054		$ 73,257