Loans - Schedule of Financing Receivables Credit Quality Indicators (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022	Dec. 31, 2022
Total
Total	$ 9,129,176		$ 9,129,176		$ 9,008,979
Farm & Ranch
Year One
Total	265,010		265,010		1,252,022
Current period charge-offs	0	$ 0	0	$ 0
Year Two
Total	1,232,135		1,232,135		1,781,621
Current period charge-offs	0	0	0	0
Year Three
Total	1,729,441		1,729,441		1,236,079
Current period charge-offs	0	0	0	0
Year Four
Total	1,187,703		1,187,703		395,895
Current period charge-offs	0	0	0	0
Year Five
Total	383,892		383,892		265,661
Current period charge-offs	0	0	0	0
Prior
Total	1,214,238		1,214,238		1,032,986
Current period charge-offs	0	0	0	(84)
Revolving Loans - Amortized Cost Basis
Total	388,033		388,033		398,062
Current period charge-offs	0	0	0	0
Total
Total	6,400,452		6,400,452		6,362,326
Current period charge-offs	0	0	0	(84)
Corporate AgFinance
Year One
Total	98,171		98,171		145,263
Current period charge-offs	0	0	0	0
Year Two
Total	113,819		113,819		299,729
Current period charge-offs	0	0	0	0
Year Three
Total	284,134		284,134		226,158
Current period charge-offs	0	0	0	0
Year Four
Total	176,675		176,675		128,928
Current period charge-offs	0	0	0	0
Year Five
Total	127,585		127,585		76,454
Current period charge-offs	0	0	0	0
Prior
Total	119,137		119,137		44,827
Current period charge-offs	0	0	0	0
Revolving Loans - Amortized Cost Basis
Total	268,382		268,382		244,894
Current period charge-offs	0	0	0	0
Total
Total	1,187,903		1,187,903		1,166,253
Current period charge-offs	0	0	0	0
Rural Infrastructure Finance
Year One
Total	383,710		383,710		741,021
Current period charge-offs	0	0	0	0
Year Two
Total	732,146		732,146		220,420
Current period charge-offs	0	0	0	0
Year Three
Total	183,029		183,029		629,223
Current period charge-offs	0	0	0	0
Year Four
Total	610,440		610,440		739,270
Current period charge-offs	0	0	0	0
Year Five
Total	720,113		720,113		7,932
Current period charge-offs	0	0	0	0
Prior
Total	632,462		632,462		649,830
Current period charge-offs	0	0	0	0
Revolving Loans - Amortized Cost Basis
Total	44,867		44,867		33,570
Current period charge-offs	0	0	0	0
Total
Total	3,306,767		3,306,767		3,021,266
Current period charge-offs	0	$ 0	0	$ 0
Acceptable | Farm & Ranch
Year One
Total	242,874		242,874		1,157,829
Year Two
Total	1,158,625		1,158,625		1,704,547
Year Three
Total	1,669,627		1,669,627		1,187,474
Year Four
Total	1,143,164		1,143,164		360,704
Year Five
Total	328,246		328,246		242,491
Prior
Total	1,119,815		1,119,815		947,535
Revolving Loans - Amortized Cost Basis
Total	362,794		362,794		385,503
Total
Total	6,025,145		6,025,145		5,986,083
Acceptable | Corporate AgFinance
Year One
Total	88,300		88,300		145,263
Year Two
Total	113,819		113,819		299,729
Year Three
Total	284,134		284,134		221,560
Year Four
Total	124,488		124,488		108,230
Year Five
Total	107,044		107,044		76,454
Prior
Total	119,137		119,137		44,827
Revolving Loans - Amortized Cost Basis
Total	262,218		262,218		232,107
Total
Total	1,099,140		1,099,140		1,128,170
Acceptable | Rural Infrastructure Finance
Year One
Total	383,710		383,710		741,021
Year Two
Total	732,146		732,146		220,420
Year Three
Total	183,029		183,029		629,223
Year Four
Total	610,440		610,440		739,270
Year Five
Total	720,113		720,113		7,932
Prior
Total	632,462		632,462		649,830
Revolving Loans - Amortized Cost Basis
Total	44,867		44,867		33,570
Total
Total	3,306,767		3,306,767		3,021,266
Special mention | Farm & Ranch
Year One
Total	21,614		21,614		91,099
Year Two
Total	64,223		64,223		68,260
Year Three
Total	54,287		54,287		25,629
Year Four
Total	24,174		24,174		11,254
Year Five
Total	32,361		32,361		5,325
Prior
Total	22,336		22,336		17,797
Revolving Loans - Amortized Cost Basis
Total	14,505		14,505		2,452
Total
Total	233,500		233,500		221,816
Special mention | Corporate AgFinance
Year One
Total	0		0		0
Year Two
Total	0		0		0
Year Three
Total	0		0		0
Year Four
Total	51,124		51,124		20,698
Year Five
Total	20,541		20,541		0
Prior
Total	0		0		0
Revolving Loans - Amortized Cost Basis
Total	2,502		2,502		2,145
Total
Total	74,167		74,167		22,843
Special mention | Rural Infrastructure Finance
Year One
Total	0		0		0
Year Two
Total	0		0		0
Year Three
Total	0		0		0
Year Four
Total	0		0		0
Year Five
Total	0		0		0
Prior
Total	0		0		0
Revolving Loans - Amortized Cost Basis
Total	0		0		0
Total
Total	0		0		0
Substandard | Farm & Ranch
Year One
Total	522		522		3,094
Year Two
Total	9,287		9,287		8,814
Year Three
Total	5,527		5,527		22,976
Year Four
Total	20,365		20,365		23,937
Year Five
Total	23,285		23,285		17,845
Prior
Total	72,087		72,087		67,654
Revolving Loans - Amortized Cost Basis
Total	10,734		10,734		10,107
Total
Total	141,807		141,807		154,427
Substandard | Corporate AgFinance
Year One
Total	9,871		9,871		0
Year Two
Total	0		0		0
Year Three
Total	0		0		4,598
Year Four
Total	1,063		1,063		0
Year Five
Total	0		0		0
Prior
Total	0		0		0
Revolving Loans - Amortized Cost Basis
Total	3,662		3,662		10,642
Total
Total	14,596		14,596		15,240
Substandard | Rural Infrastructure Finance
Year One
Total	0		0		0
Year Two
Total	0		0		0
Year Three
Total	0		0		0
Year Four
Total	0		0		0
Year Five
Total	0		0		0
Prior
Total	0		0		0
Revolving Loans - Amortized Cost Basis
Total	0		0		0
Total
Total	$ 0		$ 0		$ 0