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Collateralized Transactions (Amounts Related to Collateralized Transactions) (Details) - USD ($) $ in Millions | Sep. 30, 2023 | Dec. 31, 2022
--- | --- | ---
Permitted To Repledge [Member] |  |  |
Collateralized Transactions [Line Items] |  |  |
Securities lending transactions |  | $ 81,569 | $ 62,689
Agreements to resell | [1] | 31,314 | 33,208
Customer margin assets |  | 53,978 | 42,222
Total collateralized transactions |  | 166,861 | 138,119
Sold Or Repledged [Member] |  |  |
Collateralized Transactions [Line Items] |  |  |
Securities lending transactions |  | 7,671 | 7,055
Agreements to resell | [1] | 29,895 | 31,108
Customer margin assets |  | 17,085 | 17,008
Total collateralized transactions |  | $ 54,651 | $ 55,171
[1] |
|  | September 30, 2023 |  | December 31, 2022
|  | Permitted |  | Sold or |  | Permitted |  | Sold or
|  | to Repledge |  | Repledged |  | to Repledge |  | Repledged
|  | (in millions)
Securities lending transactions |  | $ | 81,569 |  | $ | 7,671 |  | $ | 62,689 |  | $ | 7,055
Securities purchased under agreements to resell transactions 1 |  |  | 31,314 |  |  | 29,895 |  |  | 33,208 |  |  | 31,108
Customer margin assets |  |  | 53,978 |  |  | 17,085 |  |  | 42,222 |  |  | 17,008
|  | $ | 166,861 |  | $ | 54,651 |  | $ | 138,119 |  | $ | 55,171
______________________________ (1)As of September 30, 2023, $25.6 billion or 86% (as of December 31, 2022, $27.1 billion or 87%) of securities purchased under agreements to resell were segregated to satisfy regulatory requirements.

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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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