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Employee Incentive Plans (Share Grants And Fair Value) (Details) - USD ($) $ in Millions |  | 12 Months Ended | 164 Months Ended | 200 Months Ended
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Apr. 25, 2022 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021 | Dec. 31, 2020 | Dec. 31, 2023
Employee Incentive Plans [Abstract] |  |  |  |  |  |  |  |
Shares granted | 180,889 | [1] | 1,256,870 | 1,248,105 | [2] | 1,084,773 | 28,247,286 | 32,017,923
Fair Value - Date of Grant | $ 12 |  | $ 102 | $ 91 |  | $ 84 | $ 758 | $ 1,047
Stock Incentive Plan Granted Shares Adjustment |  |  | 3,722 | 3,722 |  |  |  |
[1] | On April 25, 2022, the Company awarded a special grant of restricted stock units to employees.
[2] | Stock Incentive Plan number of granted restricted stock units related to 2022 was adjusted by 3,722 additional restricted stock units during the year ended December 31, 2023.

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- Definition Fair Value of shares granted under the 2007 Stock Incentive Plan. + References No definition available. + Details
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- Definition Number of shares granted under the 2007 Stock Incentive Plan. + References No definition available. + Details
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- Definition Stock Incentive Plan Granted Shares Adjustment for prior year end + References No definition available. + Details
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