Fair Value Disclosures - Investments Measured at Fair Value Based on Net Asset Value Per Share (Details) - USD ($) $ in Thousands	9 Months Ended	12 Months Ended
	Aug. 31, 2024	Nov. 30, 2023
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 1,204,380	$ 1,209,383
Unfunded Commitments	255,081	170,196
Equity Long/Short Hedge Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	264,698	341,530
Unfunded Commitments	$ 0	$ 0
Percentage of not redeemable investments		43.00%
Equity Long/Short Hedge Funds | 60 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		60 days
Equity Long/Short Hedge Funds | 90 Days Prior Written Notice
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Percentage of redeemable investments	100.00%
Notice period redemption of investment prior written notice period		90 days
Equity Long/Short Hedge Funds | Debt Instrument, Redemption, Period One
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Percentage of redeemable investments		57.00%
Equity Long/Short 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
Equity Long/Short 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]
Notice period redemption of investment prior written notice period	90 days
Equity Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 56,759	$ 55,701
Unfunded Commitments	$ 31,268	$ 37,534
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
Commodity Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 20,731	$ 21,747
Unfunded Commitments	$ 0	$ 0
Commodity Funds | 60 Days Prior Written Notice
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Percentage of redeemable investments	100.00%
Notice period redemption of investment prior written notice period	60 days	60 days
Commodity Funds | 90 Days Prior Written Notice
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Percentage of redeemable investments		100.00%
Multi-asset Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 346,533	$ 357,445
Unfunded Commitments	$ 0	$ 0
Percentage of not redeemable investments		4.00%
Multi-asset Funds | 60 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		60 days
Multi-asset Funds | 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
Multi-asset 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
Multi-asset Funds | Debt Instrument, Redemption, Period One | 60 Days Prior Written Notice
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Percentage of redeemable investments	86.00%	83.00%
Notice period redemption of investment prior written notice period	60 days
Multi-asset Funds | Debt Instrument, Redemption, Period Two | 90 Days Prior Written Notice
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Percentage of redeemable investments	14.00%	13.00%
Notice period redemption of investment prior written notice period	90 days
Other Funds
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Fair Value	$ 515,659	$ 432,960
Unfunded Commitments	$ 223,813	$ 132,662
Percentage of not redeemable investments	36.00%	25.00%
Other Funds | 90 Days Prior Written Notice
Fair Value, Investments, Entities that Calculate Net Asset Value Per Share [Line Items]
Percentage of redeemable investments	64.00%	75.00%
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