Borrowings - Narrative (Details) - USD ($) $ in Thousands	9 Months Ended
	Aug. 31, 2024	Aug. 31, 2023	Nov. 30, 2023
Debt Instrument [Line Items]
Interest rate on short-term borrowings outstanding	5.99%		6.06%
Increase (decrease) of long-term debt	$ 3,220,000
Long-term debt	12,922,012		$ 9,698,752
Paydown on a credit facility	1,763,572	$ 871,645
Revolving Credit Facility
Debt Instrument [Line Items]
Paydown on a credit facility	350,000
Unsecured Debt
Debt Instrument [Line Items]
Long-term debt	11,294,137		8,497,300
Net proceeds from long term debt	3,290,000
Net repayments	645,000
Unsecured Debt | Subsidiaries
Debt Instrument [Line Items]
Long-term debt	33,410		0
Secured Debt | Subsidiaries
Debt Instrument [Line Items]
Long-term debt	1,594,465		$ 1,201,452
Net proceeds from long term debt	427,900
Structured notes
Debt Instrument [Line Items]
Net proceeds from long term debt	297,900
Structured notes | Subsidiaries
Debt Instrument [Line Items]
Net proceeds from long term debt	$ 105,700