CONSOLIDATED STATEMENTS OF CASH FLOWS - USD ($) $ in Thousands	12 Months Ended
	May 31, 2023	May 31, 2022	May 31, 2021
Cash flows from operating activities:
Net income	$ 501,587	$ 798,537	$ 813,978
Adjustments to reconcile net income to net cash provided by operating activities:
Amortization of deferred loan fees	(7,500)	(8,211)	(9,390)
Amortization of debt issuance costs and discount	28,744	27,417	26,967
Amortization of guarantee fee	19,300	18,763	18,687
Depreciation and amortization	5,717	7,553	7,959
Provision (benefit) for credit losses	603	(17,972)	28,507
Loss on early extinguishment of debt	117	754	1,456
Unrealized (gains) losses on equity and debt securities	1,090	28,742	(1,015)
Derivative forward value gains	(252,267)	(557,867)	(621,946)
Advances on loans held for sale	(213,142)	(214,486)	(125,500)
Proceeds from sales of loans held for sale	256,942	170,686	125,500
Changes in operating assets and liabilities:
Accrued interest receivable	(61,305)	(3,562)	9,282
Accrued interest payable	80,390	8,278	(15,947)
Deferred income	1,769	1,345	1,285
Other	(24,272)	(9,184)	(19,868)
Net cash provided by operating activities	337,773	250,793	239,955
Cash flows from investing activities:
Advances on loans held for investment, net	(2,534,642)	(1,592,447)	(1,724,253)
Investments in fixed assets, net	(7,721)	(17,727)	(9,862)
Purchase of trading securities	(117,288)	(181,545)	(397,522)
Proceeds from sales and maturities of trading securities	201,849	162,739	127,875
Proceeds from redemption of equity securities	0	0	30,000
Net cash used in investing activities	(2,457,802)	(1,628,980)	(1,973,762)
Cash flows from financing activities:
Proceeds from (repayments of) short-term borrowings ≤ 90 days, net	(417,487)	270,405	808,252
Proceeds from short-term borrowings with original maturity > 90 days	2,864,699	2,693,256	3,081,069
Repayments of short-term borrowings with original maturity > 90 days	(2,882,104)	(2,564,590)	(3,269,210)
Payments for issuance costs for revolving bank lines of credit	(2,108)	(3,563)	0
Proceeds from issuance of long-term debt, net of discount and issuance costs	4,293,185	3,973,810	3,055,220
Payments for retirement of long-term debt	(1,916,514)	(3,054,366)	(2,186,458)
Payments made for early extinguishment of debt	0	(754)	(1,456)
Payments for issuance costs for subordinated deferrable debt	(3,295)	0	0
Proceeds from issuance of subordinated deferrable debt	300,000	0	0
Proceeds from issuance of members’ subordinated certificates	6,133	1,364	14,292
Payments for retirement of members’ subordinated certificates	(17,168)	(21,863)	(84,659)
Payments for retirement of patronage capital	(59,189)	(57,761)	(59,889)
Additions (repayments) for membership fees, net	0	2	(12)
Net cash provided by financing activities	2,166,152	1,235,940	1,357,149
Net increase (decrease) in cash, cash equivalents and restricted cash	46,123	(142,247)	(376,658)
Beginning cash, cash equivalents and restricted cash	161,114	303,361	680,019
Ending cash, cash equivalents and restricted cash	207,237	161,114	303,361
Supplemental disclosure of cash flow information:
Cash paid for interest	934,602	668,276	687,145
Cash paid for income taxes	335	3	219
Noncash financing and investing activities:
Equity investment, at cost, obtained in exchange for loan held for investment	$ 7,778	$ 0	$ 0