Derivative Instruments and Hedging Activities - Schedule of Notional Amounts and Weighted Average Rates Paid and Received (Details) - USD ($) $ in Thousands	Feb. 28, 2026	May 31, 2025
Interest rate swaps
Derivative [Line Items]
Notional Amount	$ 6,257,481	$ 7,252,235
Weighted- Average Rate Paid	3.03%	3.28%
Weighted- Average Rate Received	3.84%	4.32%
Pay-fixed swaps
Derivative [Line Items]
Notional Amount	$ 5,392,249	$ 5,833,458
Weighted- Average Rate Paid	2.82%	2.84%
Weighted- Average Rate Received	3.89%	4.54%
Receive-fixed swaps
Derivative [Line Items]
Notional Amount	$ 865,232	$ 1,418,777
Weighted- Average Rate Paid	4.33%	5.08%
Weighted- Average Rate Received	3.54%	3.39%