Fair Value Disclosures - Investments Measured at Fair Value Based on Net Asset Value Per Share (Details) - USD ($) $ in Thousands	3 Months Ended	12 Months Ended
Feb. 28, 2025	Nov. 30, 2024
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 1,366,502	$ 1,252,689
Unfunded Commitments	197,206	293,780
Hedge Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	672,192	660,720
Unfunded Commitments	$ 0	$ 0
Hedge Funds \| Debt Instrument, Redemption, Period One
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Percentage of redeemable investments		53.00%
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	52.00%
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		47.00%
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	48.00%
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]
Fair Value	$ 63,573	$ 60,215
Unfunded Commitments	$ 27,172	$ 30,530
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	10 years	10 years
Credit Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 456,714	$ 430,429
Unfunded Commitments	$ 106	$ 30,554
Percentage of not redeemable investments	33.00%	25.00%
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	64.00%	72.00%
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%	3.00%
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]
Fair Value	$ 174,023	$ 101,325
Unfunded Commitments	$ 169,928	$ 232,696
Percentage of not redeemable investments	76.00%	100.00%
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	24.00%
Notice period redemption of investment prior written notice period	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

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