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Common Equity (Narrative) (Details) - USD ($) $ in Millions | 12 Months Ended
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Dec. 31, 2023 | Dec. 31, 2022 | Dec. 31, 2021
Schedule of Common Equity [Line Items] |  |  |
Shares available for issuance under the 2020 OIP, Shareowner Direct Plan and 401(k) Savings Plan (in shares) | 13,000,000 |  |
Proceeds from issuance of common stock, net | $ 246 | $ 25 | $ 28
At-the-market Offering Program [Member] |  |  |
Schedule of Common Equity [Line Items] |  |  |
Proceeds from issuance of common stock, net | $ 223 | $ 225 |
Common stock issued during the period, At-the-market offering program (in shares) | 4,372,561 | 0 | 0
Fees and commissions from issuance of common stock | $ 2 |  |

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