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Shareholders' Equity (Shareholders' Equity, Accumulated Other Comprehensive Loss, Common Stock, and Preferred Stock) (Details) - USD ($) | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Class of Stock [Line Items] |  |  |  |
Issued |  | 1,065,000,000 | 1,066,000,000 |
Treasury Stock, Shares |  | 176,000,000 | 164,000,000 |
Total shares of common stock outstanding |  | 889,000,000 | 902,000,000 |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |
Accumulated Other Comprehensive (Income) Loss, Defined Benefit Plan, after Tax | [1] | $ (207,000,000) | $ (101,000,000) |
Other |  | (40,000,000) | (45,000,000) |
Accumulated other comprehensive loss |  | $ (331,000,000) | $ (230,000,000) |
Common Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |
Stock Repurchased During Period, Shares |  | 22,700,000 | 6,800,000 |
Stock authorized to repurchase |  | $ 4,100,000,000 |  |
Number of shares of common stock repurchased from inception (in shares) |  | 253,000,000 |  |
Approximate value of shares of common stock repurchased from inception |  | $ 10,100,000,000 |  |
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |
Number of shares of preferred stock that are authorized for issuance (in shares) |  | 5,000,000 |  |
Number of shares preferred stock that are issued at period end (in shares) |  | 0 |  |
Accumulated Other Comprehensive Income (Loss), Foreign Currency Translation Adjustment, Net of Tax |  | $ (84,000,000) | $ (84,000,000) |
Stock plans |  | 282,000,000 | 395,000,000 | $ 264,000,000
Retained Earnings |  |  |  |
Preferred Stock, Number of Shares, Par Value and Other Disclosures [Abstract] |  |  |  |
Stock plans |  | 98,000,000 | 275,000,000 | $ 277,000,000
Foreign Plan [Member] |  |  |  |
Accumulated Other Comprehensive Income (Loss), Net of Tax [Abstract] |  |  |  |
Net actuarial losses |  | $ 209,000,000 | $ 98,000,000 |
[1] | Included net actuarial losses for our international pension plans of $209 million at December 31, 2023 and $98 million at December 31, 2022.

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