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Common Equity (Common Share Activity) (Details) - shares | 12 Months Ended
--- | ---
Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Common Stock Oustanding [Roll Forward] |  |  |
Shares outstanding, January 1 (in shares) | 251,134,966 | 250,474,529 | 249,868,415
Common stock issued during the period, Shareowner Direct Plan (in shares) | 454,987 | 437,669 | 492,565
Common stock issued during the period, Equity-based compensation plans (in shares) | 134,334 | 222,768 | 113,549
Shares outstanding, December 31 (in shares) | 256,096,848 | 251,134,966 | 250,474,529
At-the-market Offering Program [Member] |  |  |
Common Stock Oustanding [Roll Forward] |  |  |
Common stock issued during the period, At-the-market offering program (in shares) | 4,372,561 | 0 | 0

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