v3.26.3
Equity - Additional Information (Details) - USD ($)
$ in Thousands
 1 Months Ended 3 Months Ended
Jul. 31, 2026
Jul. 31, 2025
May 31, 2025
Aug. 31, 2026
Aug. 31, 2025
May 31, 2026
Stockholder's Equity [Line Items]            
Total equity increase       $ 73,000    
Equity     $ 3,103,466 3,385,483 $ 3,054,736 $ 3,312,136
Net income       135,426 4,682  
Patronage capital retirement       61,813 52,978  
Cash Flow Hedging            
Stockholder's Equity [Line Items]            
Expected reclassification from AOCI over 12 months       1,000    
Total CFC Equity            
Stockholder's Equity [Line Items]            
Equity     3,082,477 3,363,363 3,033,833 3,290,524
Net income       134,916 4,766  
Patronage capital retirement $ 62,000     61,813 52,978  
Membership Fees and Educational Fund            
Stockholder's Equity [Line Items]            
Equity     3,624 3,341 3,191 3,769
Membership Fees and Educational Fund | CFC            
Stockholder's Equity [Line Items]            
Net income     1,000      
Patronage Capital Allocated            
Stockholder's Equity [Line Items]            
Equity     948,526 904,440 895,548 966,253
Patronage capital retirement       61,813 52,978  
Patronage Capital Allocated | CFC            
Stockholder's Equity [Line Items]            
Net income   $ 72,000        
Members’ Capital Reserve            
Stockholder's Equity [Line Items]            
Equity     $ 1,631,609 $ 1,804,161 $ 1,631,609 $ 1,804,161
Members’ Capital Reserve | CFC            
Stockholder's Equity [Line Items]            
Net income   172,000        
Retained Earnings, Appropriated Patronage Capital Allocated And Retired | CFC            
Stockholder's Equity [Line Items]            
Net income   62,000        
Patronage refunds   62,000        
Retained Earnings Allocation Of 50% Of Prior Year Patronage Capital Allocation | CFC            
Stockholder's Equity [Line Items]            
Net income   $ 36,000        
Percentage of patronage capital allocation   50.00%        
Retained Earnings Allocation Held For Twenty Five Years | CFC            
Stockholder's Equity [Line Items]            
Net income   $ 26,000        
Period for which prior years allocated patronage capital is required to be held   25 years