Long-Term Debt Outstanding (Details) - USD ($) $ in Thousands	Nov. 30, 2019	May 31, 2019
Long-term debt
Long-term debt	$ 18,434,451	$ 19,210,793
Collateral trust bonds
Long-term debt
Long-term Debt, Gross	7,357,711	7,662,711
Unamortized discount	(239,551)	(244,643)
Debt issuance costs	(31,575)	(34,336)
Long-term debt	7,086,585	7,383,732
Guaranteed Underwriter Program notes payable
Long-term debt
Long-term debt	5,363,798	5,410,507
Farmer Mac notes payable
Long-term debt
Long-term Debt, Gross	2,944,954	3,054,914
Other Secured Notes Payable
Long-term debt
Long-term Debt, Gross	9,225	9,225
Debt issuance costs	(146)	(178)
Long-term debt	9,079	9,047
Notes payable
Long-term debt
Long-term debt	8,317,831	8,474,468
Secured Debt
Long-term debt
Long-term debt	15,404,416	15,858,200
Medium-term notes sold through dealers
Long-term debt
Long-term Debt, Gross	2,617,353	2,962,375
Medium-term notes sold to members
Long-term debt
Long-term Debt, Gross	423,539	397,080
Unsecured Medium Term Notes
Long-term debt
Long-term Debt, Gross	3,040,892	3,359,455
Unamortized discount	(764)	(931)
Debt issuance costs	(17,617)	(19,399)
Long-term debt	3,022,511	3,339,125
Other Unsecured Notes Payable
Long-term debt
Long-term Debt, Gross	7,701	13,701
Unamortized discount	(142)	(187)
Debt issuance costs	(35)	(46)
Unsecured notes payable
Long-term debt
Long-term debt	7,524	13,468
Unsecured Debt
Long-term debt
Long-term debt	$ 3,030,035	$ 3,352,593

Amount, before unamortized (discount) premium and debt issuance costs, of long-term debt. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt.

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