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Earnings Per Share (EPS) and Dividends (Tables) | 12 Months Ended
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Dec. 31, 2023
Earnings Per Share [Abstract] |
Basic And Diluted Earnings Per Share Computation |
|  |  | Years Ended December 31, |
|  |  | 2023 |  | 2022 |  | 2021 |
|  |  | Basic |  | Diluted |  | Basic |  | Diluted |  | Basic |  | Diluted |
| EPS Numerator: |  |  |  |  |  |  |  |  |  |  |  |  |
| (Millions) |  |  |  |  |  |  |  |  |  |  |  |  |
| Net Income (Loss) |  | $ | 2,563 |  |  | $ | 2,563 |  |  | $ | 1,031 |  |  | $ | 1,031 |  |  | $ | (648) |  |  | $ | (648) |  |
| EPS Denominator: |  |  |  |  |  |  |  |  |  |  |  |  |
| (Millions) |  |  |  |  |  |  |  |  |  |  |  |  |
| Weighted Average Common Shares Outstanding |  | 498 |  |  | 498 |  |  | 498 |  |  | 498 |  |  | 504 |  |  | 504 |  |
| Effect of Stock Based Compensation Awards |  | — |  |  | 2 |  |  | — |  |  | 3 |  |  | — |  |  | — |  |
| Total Shares |  | 498 |  |  | 500 |  |  | 498 |  |  | 501 |  |  | 504 |  |  | 504 |  |
| EPS: |  |  |  |  |  |  |  |  |  |  |  |  |
| Net Income (Loss) |  | $ | 5.15 |  |  | $ | 5.13 |  |  | $ | 2.07 |  |  | $ | 2.06 |  |  | $ | (1.29) |  |  | $ | (1.29) |  |
Dividend Payments On Common Stock |
|  |  | Years Ended December 31, |
| Dividend Payments on Common Stock |  | 2023 |  | 2022 |  | 2021 |
| Per Share |  | $ | 2.28 |  |  | $ | 2.16 |  |  | $ | 2.04 |  |
| in Millions |  | $ | 1,137 |  |  | $ | 1,079 |  |  | $ | 1,031 |  |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 260 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 1 -Subparagraph (a) -Publisher FASB -URI https://asc.fasb.org//1943274/2147482662/260-10-50-1 + Details
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