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CONDENSED BALANCE SHEETS - SDG&E (Parentheticals) - shares | Sep. 30, 2023 | Dec. 31, 2022
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Stockholders' Equity Attributable to Parent [Abstract] |  |
Preferred stock, shares authorized (in shares) | 50,000,000 | 50,000,000
Common stock, shares authorized (in shares) | 1,125,000,000 | 1,125,000,000
Common stock, shares outstanding (in shares) | 629,328,058 | 628,669,356
San Diego Gas and Electric Company |  |
Stockholders' Equity Attributable to Parent [Abstract] |  |
Preferred stock, shares authorized (in shares) | 45,000,000 | 45,000,000
Preferred stock, shares issued (in shares) | 0 | 0
Common stock, shares authorized (in shares) | 255,000,000 | 255,000,000
Common stock, shares outstanding (in shares) | 116,583,358 | 116,583,358

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