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Financial Assets And Financial Liabilities (Netting of Financial Liabilities) (Details) - USD ($) $ in Millions | Jun. 30, 2022 | Dec. 31, 2021
--- | --- | ---
Offsetting Securities Loaned [Abstract] |  |  |
Gross Amounts of Financial Assets Recognized |  | $ 10,696 | $ 11,769
Amounts Offset in the Condensed Consolidated Statement of Financial Condition | [1] |  |
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition |  | 10,696 | 11,769
Amounts of Liabilities Not Offset in the Condensed Consolidated Statement of Financial Condition (Cash or Financial Instruments) |  | (9,806) | (10,992)
Net Amount |  | 890 | 777
Total [Abstract] |  |  |
Gross Amounts of Financial Assets Recognized |  | 10,748 | 11,801
Amounts Offset in the Consolidated Statement of Financial Condition | [1] |  |
Net Amounts Presented in the Consolidated Statement of Financial Condition |  | 10,748 | 11,801
Amounts of Liabilities Not Offset in the Consolidated Statement of Financial Condition (Cash or Financial Instruments) |  | (9,831) | (11,011)
Net Amount |  | 917 | 790
Options [Member] |  |  |
Offsetting Financial Instruments Sold, But Not Yet Purchased, At Fair Value [Abstract] |  |  |
Gross Amounts of Financial Assets Recognized |  | 25 | 22
Amounts Offset in the Condensed Consolidated Statement of Financial Condition | [1] |  |
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition |  | 25 | 22
Amounts of Liabilities Not Offset in the Condensed Consolidated Statement of Financial Condition (Cash or Financial Instruments) |  | (25) | (19)
Net Amount |  |  | 3
Currency Forward Contracts [Member] |  |  |
Offsetting Financial Instruments Sold, But Not Yet Purchased, At Fair Value [Abstract] |  |  |
Gross Amounts of Financial Assets Recognized |  | 27 | 10
Amounts Offset in the Condensed Consolidated Statement of Financial Condition | [1] |  |
Net Amounts Presented in the Condensed Consolidated Statement of Financial Condition |  | 27 | 10
Amounts of Liabilities Not Offset in the Condensed Consolidated Statement of Financial Condition (Cash or Financial Instruments) |  |  |
Net Amount |  | $ 27 | $ 10
[1] | The Company did not have any balances eligible for netting in accordance with ASC Topic 210-20 as of June 30, 2022 and December 31, 2021.

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