Collateralized Transactions (Tables)	12 Months Ended
Dec. 31, 2021
Disclosure Collateralized Transactions [Abstract]
Amounts Related To Collateralized Transactions	December 31, 2021 December 31, 2020 Permitted Sold or Permitted Sold or to Repledge Repledged to Repledge Repledged (in millions)Securities lending transactions $ 69,582 $ 6,192 $ 64,436 $ 4,859Securities purchased under agreements to resell transactions 1 14,715 13,956 23,859 23,832Customer margin assets 65,899 15,936 47,609 14,182 $ 150,196 $ 36,084 $ 135,904 $ 42,873___________________________ (1)As of December 31, 2021, $10.4 billion or 74% (as of December 31, 2020, $23.1 billion or 97%) of securities acquired through agreements to resell that are shown as repledged have been deposited in a separate bank account for the exclusive benefit of customers in accordance with SEC Rule 15c3-3.
Financial Instruments Owned and Pledged as Collateral (table)	December 31, 2021 2020 (in millions)Stocks $ 60 $ 53U.S. and foreign government securities 54 33 $ 114 $ 86

Tabular disclosure of financial instruments held by the entity for its own account for trading or investment purposes that are carried at fair value and pledged to counterparties as collateral for financing transactions. Description may include equity, fixed income, debt or other securities.

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=66007379&loc=d3e113888-111728

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 860
-SubTopic 30
-Section 50
-Paragraph 1A
-URI http://asc.fasb.org/extlink&oid=109249958&loc=SL6224234-111729

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