Derivative Financial Instruments (Counterparty Credit Quality with Respect to Fair Value of OTC Derivatives Assets) (Details) $ in Thousands	Feb. 28, 2022 USD ($)
Derivative Instruments and Hedging Activities Disclosure [Abstract]
A- or higher	$ 467,918
BBB- to BBB+	15,109
BB+ or lower	119,477
Unrated	113,565
Total OTC derivative assets included in Financial instruments owned, at fair value	$ 716,069

Fair value of OTC derivatives assets, counterparty credit quality A- or higher.

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Fair value of OTC derivatives assets, counterparty credit quality BB or lower.

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Fair value of OTC derivatives assets, counterparty credit quality BBB- to BBB+.

No definition available.

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Fair value of OTC derivatives assets, counterparty credit quality unrated.

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OTC Derivative Assets Included In Financial Instruments Owned.

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