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Collateralized Transactions (Amounts Related to Collateralized Transactions) (Details) - USD ($) $ in Millions | Sep. 30, 2025 | Dec. 31, 2024
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Permitted To Repledge [Member] |  |  |
Collateralized Transactions [Line Items] |  |  |
Securities lending transactions |  | $ 191,634 | $ 134,407
Agreements to resell | [1] | 38,384 | 27,988
Customer margin assets |  | 106,238 | 87,809
Total collateralized transactions |  | 336,256 | 250,204
Sold Or Repledged [Member] |  |  |
Collateralized Transactions [Line Items] |  |  |
Securities lending transactions |  | 18,465 | 8,342
Agreements to resell | [1] | 38,362 | 26,678
Customer margin assets |  | 35,104 | 21,465
Total collateralized transactions |  | $ 91,931 | $ 56,485
[1] | As of September 30, 2025 and December 31, 2024, the Company had $30.1 billion and $21.4 billion, respectively, of securities purchased under agreements to resell, and $2.5 billion and $0, respectively, of securities borrowed that were segregated to satisfy regulatory requirements. These securities are included in “Securities - segregated for regulatory purposes” in the condensed consolidated statements of financial condition.

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- Definition Market value of collateral received in reverse repurchase transactions + References No definition available. + Details
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- Definition Collateralized Transactions [Line Items] + References No definition available. + Details
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- Definition Total market value of collateralized transactions as of the balance sheet date. + References No definition available. + Details
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- Definition Fair value as of the balance sheet date of customer securities accepted as collateral by the entity that it is permitted by contract or custom to sell or re-pledge to counterparties as collateral. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 860 -SubTopic 30 -Section 50 -Paragraph 1A -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org/1943274/2147481420/860-30-50-1A + Details
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- Details
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