v3.26.1
NOTES PAYABLE - Borrowings (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2026
Dec. 31, 2025
Due within one year:    
Outstanding, Amount $ 11,503,120 $ 11,271,682
Outstanding, Weighted - average rate 3.33% 3.34%
Medium-term notes due in:    
Two years $ 6,207,456  
Three years 3,807,152  
Four years 3,379,599  
Five years 5,242,070  
Thereafter 2,138,135  
Total due after one year 20,774,412  
Total principal net of discounts 32,277,532 $ 30,815,880
Hedging adjustments (41,224) 6,690
Total $ 32,236,308 30,822,570
Weighted average rate 3.59%  
Total weighted - average rate 3.59%  
Two years    
Medium-term notes due in:    
Weighted average rate 3.71%  
Three years    
Medium-term notes due in:    
Weighted average rate 3.94%  
Four years    
Medium-term notes due in:    
Weighted average rate 4.15%  
Five years    
Medium-term notes due in:    
Weighted average rate 3.60%  
Thereafter    
Medium-term notes due in:    
Weighted average rate 3.04%  
Total due after one year    
Medium-term notes due in:    
Weighted average rate 3.73%  
Discount notes    
Due within one year:    
Outstanding, Amount $ 2,064,121 $ 2,614,571
Outstanding, Weighted - average rate 3.78% 3.87%
Average Outstanding, Amount $ 2,275,725 $ 1,854,488
Average Outstanding, Weighted - average rate (as a percent) 3.78% 4.22%
Medium-term notes    
Due within one year:    
Outstanding, Amount $ 2,640,399 $ 2,822,454
Outstanding, Weighted - average rate 3.84% 4.02%
Average Outstanding, Amount $ 2,731,521 $ 2,901,863
Average Outstanding, Weighted - average rate (as a percent) 3.86% 4.35%
Medium-term notes due in:    
Two years   $ 6,641,397
Three years   3,740,471
Four years   2,836,656
Five years   3,889,804
Thereafter   2,435,870
Total due after one year   $ 19,544,198
Total weighted - average rate   3.58%
Medium-term notes | Two years    
Medium-term notes due in:    
Weighted average rate   3.65%
Medium-term notes | Three years    
Medium-term notes due in:    
Weighted average rate   3.97%
Medium-term notes | Four years    
Medium-term notes due in:    
Weighted average rate   4.24%
Medium-term notes | Five years    
Medium-term notes due in:    
Weighted average rate   3.71%
Medium-term notes | Thereafter    
Medium-term notes due in:    
Weighted average rate   2.88%
Medium-term notes | Total due after one year    
Medium-term notes due in:    
Weighted average rate   3.71%
Current portion of medium-term notes    
Due within one year:    
Outstanding, Amount $ 6,798,600 $ 5,834,657
Outstanding, Weighted - average rate 3.00% 2.77%