v3.26.1
Fair Value Disclosures - Investments Measured at Fair Value Based on Net Asset Value Per Share (Details) - USD ($)
$ in Thousands
6 Months Ended 12 Months Ended
May 31, 2026
May 31, 2025
Nov. 30, 2025
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Alternative investment $ 1,506,479   $ 1,681,523
Unfunded Commitments 150,447   165,547
Hedge Funds      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Alternative investment 725,883   888,880
Unfunded Commitments $ 0   $ 0
Percentage of not redeemable investments 21.00%   17.00%
Hedge Funds | Debt Instrument, Redemption, Period One      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Percentage of redeemable investments     42.00%
Hedge Funds | Debt Instrument, Redemption, Period One | 90 Days Prior Written Notice      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Percentage of redeemable investments 37.00%    
Notice period redemption of investment prior written notice period 90 days   90 days
Hedge Funds | Debt Instrument, Redemption, Period One | 45 Days Prior Written Notice      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Notice period redemption of investment prior written notice period 45 days   45 days
Hedge Funds | Debt Instrument, Redemption, Period Two      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Percentage of redeemable investments     41.00%
Hedge Funds | Debt Instrument, Redemption, Period Two | 60 Days Prior Written Notice      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Percentage of redeemable investments 42.00%    
Notice period redemption of investment prior written notice period 60 days   60 days
Hedge Funds | Debt Instrument, Redemption, Period Two | 45 Days Prior Written Notice      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Notice period redemption of investment prior written notice period 45 days   45 days
Private Equity Funds      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Alternative investment $ 65,920   $ 66,476
Unfunded Commitments $ 22,990   $ 26,828
Percentage of not redeemable investments 100.00%   100.00%
Estimated period for the liquidation of the underlying assets, minimum 1 year 1 year  
Expected period for the liquidation of the underlying assets, maximum 9 years 9 years  
Credit Funds      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Alternative investment $ 435,715   $ 490,321
Unfunded Commitments $ 23,847   $ 23,847
Percentage of not redeemable investments 49.00%   42.00%
Credit Funds | Debt Instrument, Redemption, Period One | 90 Days Prior Written Notice      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Percentage of redeemable investments 48.00%   56.00%
Notice period redemption of investment prior written notice period 90 days   90 days
Credit Funds | Debt Instrument, Redemption, Period Two | 30 Days Prior Written Notice      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Percentage of redeemable investments 3.00%   2.00%
Notice period redemption of investment prior written notice period 30 days   30 days
Real Estate and Other Funds      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Alternative investment $ 278,961   $ 235,846
Unfunded Commitments $ 103,610   $ 114,872
Percentage of not redeemable investments 88.00%   81.00%
Real Estate and Other Funds | 90 Days Prior Written Notice      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Percentage of redeemable investments 12.00%   19.00%
Notice period redemption of investment prior written notice period 90 days   90 days
Short-term Investments | 90 Days Prior Written Notice      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Notice period redemption of investment prior written notice period 90 days 90 days  
Short-term Investments | 120 Days Prior Written Notice      
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]      
Notice period redemption of investment prior written notice period 120 days 120 days