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Borrowings - Narrative (Details) - USD ($)
$ in Thousands
 6 Months Ended
May 31, 2025
Nov. 30, 2024
Debt Instrument [Line Items]    
Interest rate on short-term borrowings outstanding 5.50% 6.25%
Increase (decrease) of long-term debt $ 1,820,000  
Long-term debt 15,351,967 $ 13,530,565
Structured Notes    
Debt Instrument [Line Items]    
Net proceeds from long term debt 438,100  
Structured Notes | Subsidiaries    
Debt Instrument [Line Items]    
Net proceeds from long term debt 116,900  
Drawdown of Unsecured Credit Facility    
Debt Instrument [Line Items]    
Net proceeds from long term debt 350,000  
Unsecured Debt    
Debt Instrument [Line Items]    
Long-term debt 13,138,107 12,076,096
Net proceeds from long term debt 874,500  
Net repayments 666,900  
Unsecured Debt | Subsidiaries    
Debt Instrument [Line Items]    
Long-term debt 59,831 31,892
Secured Debt | Subsidiaries    
Debt Instrument [Line Items]    
Long-term debt 2,154,029 $ 1,422,577
Net proceeds from long term debt 690,000  
Foreign Currency Borrowing | Subsidiaries    
Debt Instrument [Line Items]    
Currency losses on foreign currency borrowings $ 237,200