Financial Assets And Financial Liabilities (Financial Assets and Liabilities Not Measured at Fair Value) (Details) - USD ($) $ in Millions	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Cash and cash equivalents	$ 3,436	$ 2,395	$ 4,292
Cash segregated for regulatory purposes	25,167	22,888	$ 15,903
Securities - segregated for regulatory purposes	31,781	15,121
Securities borrowed	4,749	3,912
Securities purchased under agreements to resell	6,029	4,380
Receivables from customers	38,760	54,935
Brokers, dealers and clearing organizations	3,469	3,771
Interest Receivable	341	127
Other assets	926	911
Short-term borrowings	18	27
Securities loaned	8,940	11,769
Customers	93,195	85,634
Brokers, dealers and clearing organizations	291	557
Interest	193	8
at Fair Value
Cash and cash equivalents	3,436	2,395
Cash segregated for regulatory purposes	25,167	22,888
Securities - segregated for regulatory purposes	27,058	10,392
Securities borrowed	4,749	3,912
Securities purchased under agreements to resell	6,029	4,380
Receivables from customers	38,760	54,935
Brokers, dealers and clearing organizations	3,469	3,771
Interest Receivable	341	127
Other assets	18	20
Total financial assets, not measured at fair value	109,027	102,820
Short-term borrowings	18	27
Securities loaned	8,940	11,769
Customers	93,195	85,634
Brokers, dealers and clearing organizations	291	557
Interest	193	8
Total financial liabilities, not measured at fair value	102,637	97,995
Carrying Value
Cash and cash equivalents	3,436	2,395
Cash segregated for regulatory purposes	25,167	22,888
Securities - segregated for regulatory purposes	27,058	10,392
Securities borrowed	4,749	3,912
Securities purchased under agreements to resell	6,029	4,380
Receivables from customers	38,760	54,935
Brokers, dealers and clearing organizations	3,469	3,771
Interest Receivable	341	127
Other assets	17	20
Total financial assets, not measured at fair value	109,026	102,820
Short-term borrowings	18	27
Securities loaned	8,940	11,769
Customers	93,195	85,634
Brokers, dealers and clearing organizations	291	557
Interest	193	8
Total financial liabilities, not measured at fair value	102,637	97,995
Level 1 [Member]
Cash and cash equivalents	3,436	2,395
Cash segregated for regulatory purposes	25,167	22,888
Total financial assets, not measured at fair value	28,603	25,283
Short-term borrowings
Securities loaned
Customers
Brokers, dealers and clearing organizations
Interest
Total financial liabilities, not measured at fair value
Level 2 [Member]
Securities - segregated for regulatory purposes	27,058	10,392
Securities borrowed	4,749	3,912
Securities purchased under agreements to resell	6,029	4,380
Receivables from customers	38,760	54,935
Brokers, dealers and clearing organizations	3,469	3,771
Interest Receivable	341	127
Other assets	2	2
Total financial assets, not measured at fair value	80,408	77,519
Short-term borrowings	18	27
Securities loaned	8,940	11,769
Customers	93,195	85,634
Brokers, dealers and clearing organizations	291	557
Interest	193	8
Total financial liabilities, not measured at fair value	102,637	97,995
Level 3 [Member]
Cash and cash equivalents
Cash segregated for regulatory purposes
Securities - segregated for regulatory purposes
Securities borrowed
Securities purchased under agreements to resell
Receivables from customers
Brokers, dealers and clearing organizations
Interest Receivable
Other assets	16	18
Total financial assets, not measured at fair value	16	18
Short-term borrowings
Securities loaned
Customers
Brokers, dealers and clearing organizations
Interest
Total financial liabilities, not measured at fair value

Margin loans to clients stated net of allowance for doubtful accounts.

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Amount payable to other broker-dealer and clearing organization, including, but not limited to, security failed-to-receive, deposit received for security loaned, open transaction, and floor-brokerage payable.

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Amount payable to customer by broker-dealer.

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Amount of currency on hand as well as demand deposits with banks or financial institutions. Includes other kinds of accounts that have the general characteristics of demand deposits. Also includes short-term, highly liquid investments that are both readily convertible to known amounts of cash and so near their maturity that they present insignificant risk of changes in value because of changes in interest rates. Excludes cash and cash equivalents within disposal group and discontinued operation.

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Cash deposited in a special reserve account for the exclusive benefit of customers pursuant to SEC Regulations.

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Carrying amount as of the balance sheet date of interest earned but not received. Also called accrued interest or accrued interest receivable.

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