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Fair Value Disclosures - Summary of Information Related to Bank Loans and Borrowings of Consolidated CLO Recorded within Investments and Borrowings of Consolidated VIEs Respectively for which Fair Value Option was Elected (Detail) - USD ($) $ in Millions | Dec. 31, 2025 | Dec. 31, 2024
--- | --- | ---
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Aggregate principal amounts outstanding | $ 12,875 |
CLO Loans [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Aggregate principal amounts outstanding | 0 | $ 156
Fair value | 0 | 141
Aggregate unpaid principal balance in excess of (less than) fair value | 0 | 15
CLO Borrowings [Member] |  |
Fair Value, Option, Quantitative Disclosures [Line Items] |  |
Aggregate principal amounts outstanding | 0 | 146
Fair value | 0 | 129
Aggregate unpaid principal balance in excess of (less than) fair value | $ 0 | $ 17

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