Loans - Schedule of Financing Receivables Credit Quality Indicators (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Total
Total	$ 9,011,820	$ 8,314,096
Current period charge-offs			$ 5,800
Agricultural Finance
Total
Current period charge-offs	(84)		5,759
Current period recoveries		(1,054)
Farm & Ranch
Year One
Total	1,252,022	1,872,895
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Year Two
Total	1,781,621	1,355,852
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Year Three
Total	1,236,079	455,799
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Year Four
Total	395,895	307,840
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Year Five
Total	265,661	319,070
Current period charge-offs	0	0
Current period recoveries	0	(1,054)
Current period Agricultural Finance net charge-offs	0	(1,054)
Prior
Total	1,032,986	1,047,783
Current period charge-offs	(84)	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	(84)	0
Revolving Loans - Amortized Cost Basis
Total	398,062	364,454
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Total
Total	6,362,326	5,723,693
Current period charge-offs	(84)	0	5,759
Current period recoveries	0	(1,054)
Current period Agricultural Finance net charge-offs	(84)	(1,054)
Corporate AgFinance
Year One
Total	145,263	351,614
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0
Year Two
Total	299,729	240,712
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0
Year Three
Total	226,158	161,773
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0
Year Four
Total	128,928	92,263
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0
Year Five
Total	76,454	32,618
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0
Prior
Total	44,827	47,360
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0
Revolving Loans - Amortized Cost Basis
Total	244,894	196,960
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0
Total
Total	1,166,253	1,123,300
Current period charge-offs	0	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0
Rural Infrastructure Finance
Year One
Total	741,021	242,570
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Year Two
Total	220,420	635,166
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Year Three
Total	629,223	774,941
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Year Four
Total	739,270	8,100
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Year Five
Total	7,932	86,878
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Prior
Total	649,830	628,903
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Revolving Loans - Amortized Cost Basis
Total	33,570	12,578
Current period charge-offs	0	0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Total
Total	3,021,266	2,389,136
Current period charge-offs	0	0	$ 0
Current period recoveries	0	0
Current period Agricultural Finance net charge-offs	0	0
Acceptable | Farm & Ranch
Year One
Total	1,157,829	1,786,446
Year Two
Total	1,704,547	1,300,798
Year Three
Total	1,187,474	399,394
Year Four
Total	360,704	277,061
Year Five
Total	242,491	271,234
Prior
Total	947,535	957,357
Revolving Loans - Amortized Cost Basis
Total	385,503	349,949
Total
Total	5,986,083	5,342,239
Acceptable | Corporate AgFinance
Year One
Total	145,263	351,614
Year Two
Total	299,729	240,712
Year Three
Total	221,560	140,742
Year Four
Total	108,230	47,856
Year Five
Total	76,454	32,618
Prior
Total	44,827	47,360
Revolving Loans - Amortized Cost Basis
Total	232,107	195,415
Total
Total	1,128,170	1,056,317
Acceptable | Rural Infrastructure Finance
Year One
Total	741,021	242,570
Year Two
Total	220,420	612,366
Year Three
Total	629,223	774,941
Year Four
Total	739,270	8,100
Year Five
Total	7,932	86,878
Prior
Total	649,830	628,903
Revolving Loans - Amortized Cost Basis
Total	33,570	12,578
Total
Total	3,021,266	2,366,336
Special mention | Farm & Ranch
Year One
Total	91,099	84,795
Year Two
Total	68,260	50,057
Year Three
Total	25,629	30,168
Year Four
Total	11,254	3,670
Year Five
Total	5,325	9,133
Prior
Total	17,797	14,646
Revolving Loans - Amortized Cost Basis
Total	2,452	3,227
Total
Total	221,816	195,696
Special mention | Corporate AgFinance
Year One
Total	0	0
Year Two
Total	0	0
Year Three
Total	0	21,031
Year Four
Total	20,698	44,407
Year Five
Total	0	0
Prior
Total	0	0
Revolving Loans - Amortized Cost Basis
Total	2,145	1,545
Total
Total	22,843	66,983
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
Substandard | Farm & Ranch
Year One
Total	3,094	1,654
Year Two
Total	8,814	4,997
Year Three
Total	22,976	26,237
Year Four
Total	23,937	27,109
Year Five
Total	17,845	38,703
Prior
Total	67,654	75,780
Revolving Loans - Amortized Cost Basis
Total	10,107	11,278
Total
Total	154,427	185,758
Substandard | Corporate AgFinance
Year One
Total	0	0
Year Two
Total	0	0
Year Three
Total	4,598	0
Year Four
Total	0	0
Year Five
Total	0	0
Prior
Total	0	0
Revolving Loans - Amortized Cost Basis
Total	10,642	0
Total
Total	15,240	0
Substandard | Rural Infrastructure Finance
Year One
Total	0	0
Year Two
Total	0	22,800
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	$ 22,800