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Earnings Per Share (EPS) And Dividends (Dividend Payments On Common Stock) (Detail) - USD ($) $ / shares in Units, $ in Millions | 1 Months Ended | 12 Months Ended
--- | --- | ---
Feb. 28, 2024 | Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Earnings Per Share, Diluted [Line Items] |  |  |  |
Dividend Payments on Common Stock, Per Share |  | $ 2.28 | $ 2.16 | $ 2.04
Dividend Payments on Common Stock |  | $ 1,137 | $ 1,079 | $ 1,031
Subsequent Event [Member] |  |  |  |
Earnings Per Share, Diluted [Line Items] |  |  |  |
Common stock dividends per share | $ 0.60 |  |  |

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