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Derivatives - Fair Values of Derivatives Reported on Condensed Consolidated Statements of Financial Condition (Detail) - USD ($) $ in Thousands | Sep. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Derivatives Fair Value [Line Items] |  |  |
Derivative Assets, Fair Value |  | $ 25,182 | $ 2,057
Derivative Assets, Notional |  | 233,309 | 273,947
Derivative Liabilities, Fair Value |  | 311,276 | 383,352
Derivative Liabilities, Notional |  | 591,778 | 571,234
Derivative Assets, Fair Value, Counterparty and cash collateral netting |  | 18,502 | 922
Derivative Assets, Fair Value, Total |  | 18,502 | 922
Derivative Liabilities, Fair Value, Counterparty and cash collateral netting |  | 311,145 | 372,245
Derivative Liabilities, Fair Value, Amounts not netted, Cash collateral | [1] | (2,363) | (2,476)
Derivative Liabilities, Fair Value, Total |  | 308,782 | 369,378
Derivative Liabilities, Fair Value, Amounts not netted, Securities collateral | [1] |  | (391)
Forward Foreign Currency Exchange Rate Contracts [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Derivative Assets, Fair Value |  | 967 | 1,005
Derivative Assets, Notional |  | 96,733 | 253,059
Derivative Liabilities, Fair Value |  | 3,437 | 761
Derivative Liabilities, Notional |  | 231,388 | 174,550
Derivative Assets, Fair Value, Counterparty and cash collateral netting |  | (27) | (83)
Derivative Liabilities, Fair Value, Counterparty and cash collateral netting |  | (27) | (83)
Total Return Swaps and Other [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Derivative Assets, Fair Value |  | 24,215 | 1,052
Derivative Assets, Notional |  | 136,576 | 20,888
Derivative Liabilities, Fair Value |  | 104 | 13,709
Derivative Liabilities, Notional |  | 6,311 | 83,706
Derivative Assets, Fair Value, Counterparty and cash collateral netting |  | (6,653) | (1,052)
Derivative Liabilities, Fair Value, Counterparty and cash collateral netting |  | (104) | (11,024)
LGAC Warrants [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Derivative Liabilities, Fair Value |  | 575 | 10,005
Derivative Liabilities, Notional |  | 11,500 | 11,500
LFI and Other Similar Deferred Compensation Arrangements [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Derivative Liabilities, Fair Value |  | 307,160 | 358,877
Derivative Liabilities, Notional |  | 342,579 | 301,478
Derivative Liabilities, Fair Value, Counterparty and cash collateral netting |  | 307,160 | 358,877
Total in "other assets" and "other liabilities" [Member] |  |  |
Derivatives Fair Value [Line Items] |  |  |
Derivative Assets, Fair Value, Counterparty and cash collateral netting |  | 18,502 | 922
Derivative Liabilities, Fair Value, Counterparty and cash collateral netting |  | $ 311,145 | $ 372,245
[1] | Amounts are subject to master netting arrangements but do not meet the criteria for netting on the condensed consolidated statements of financial condition under U.S. GAAP. For some counterparties, the collateral amounts of securities and cash collateral pledged may exceed the derivative assets and derivative liabilities balances. Where this is the case, the total amount reported is limited to the net derivative assets and net derivative liabilities balances with that counterparty.

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