v3.26.3
Fair Value Disclosures - Investments Measured at Fair Value Based on Net Asset Value Per Share (Details) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Feb. 28, 2026
Aug. 31, 2026
Aug. 31, 2025
Nov. 30, 2025
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]        
Alternative investment   $ 1,384,917   $ 1,681,523
Unfunded Commitments   126,859   165,547
Hedge Funds        
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]        
Alternative investment   642,298   888,880
Unfunded Commitments   $ 0   $ 0
Percentage of not redeemable investments   23.00%   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   43.00%    
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 | 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    
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   34.00%    
Notice period redemption of investment prior written notice period 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   $ 64,535   $ 66,476
Unfunded Commitments   $ 20,218   $ 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   $ 347,405   $ 490,321
Unfunded Commitments   $ 28,396   $ 23,847
Percentage of not redeemable investments   66.00%   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   30.00%   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   4.00%   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   $ 330,679   $ 235,846
Unfunded Commitments   $ 78,245   $ 114,872
Percentage of not redeemable investments   95.00%   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   5.00%   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