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Derivative Financial Instruments - Unrealized and Realized Gains (Losses) on Derivative Contracts (Details) - USD ($) $ in Thousands | 3 Months Ended
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Feb. 28, 2026 | Feb. 28, 2025
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) recognized in interest expense on fair value hedge | $ (9,795) | $ (12,319)
Net settlements | 9,600 | 11,900
Unrealized and realized gains (losses) | (119,615) | 473,624
Interest rate contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Unrealized and realized gains (losses) | 267 | (22,502)
Foreign exchange contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Unrealized and realized gains (losses) | (1,731) | (4,875)
Equity contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Unrealized and realized gains (losses) | (119,375) | 494,216
Commodity contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Unrealized and realized gains (losses) | 4,282 | 5,734
Credit contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Unrealized and realized gains (losses) | (3,058) | 1,051
Net investment hedging |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) on net investment hedges recognized in other comprehensive income (loss) | (27,965) | 16,854
Net investment hedging | Foreign exchange contracts |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) on net investment hedges recognized in other comprehensive income (loss) | (27,965) | 16,854
Long-term debt |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) recognized in interest expense on fair value hedge | (10,916) | (6,691)
Interest rate swaps |  |
Derivative Instruments, Gain (Loss) [Line Items] |  |
Gains (losses) recognized in interest expense on fair value hedge | $ 1,121 | $ (5,628)

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