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CONSOLIDATED BALANCE SHEETS (Parentheticals) - USD ($) $ in Millions | Dec. 31, 2018 | Dec. 31, 2017
--- | --- | ---
Property, plant and equipment, net related to VIE | $ 295 | $ 321
Current portion of long-term debt | 1,673 | 1,427
Long-term debt, VIE | $ 190 | $ 284
Stockholders' Equity Attributable to Parent [Abstract] |  |
Preferred stock, shares authorized (in shares) | 50,000,000 | 50,000,000
Common stock, shares authorized (in shares) | 750,000,000 | 750,000,000
Common stock, shares outstanding (in shares) | 273,769,513 | 251,358,977
San Diego Gas and Electric Company [Member] |  |
Property, plant and equipment, net related to VIE | $ 295 | $ 321
Current portion of long-term debt | 81 | 220
Long-term debt, VIE | $ 190 | $ 284
Stockholders' Equity Attributable to Parent [Abstract] |  |
Preferred stock, shares authorized (in shares) | 45,000,000 | 45,000,000
Preferred stock, shares outstanding (in shares) | 0 | 0
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) | 117,000,000 | 117,000,000
Southern California Gas Company [Member] |  |
Current portion of long-term debt | $ 3 | $ 501
Stockholders' Equity Attributable to Parent [Abstract] |  |
Preferred stock, shares authorized (in shares) | 11,000,000 | 11,000,000
Preferred stock, shares outstanding (in shares) | 1,000,000 | 1,000,000
Common stock, shares authorized (in shares) | 100,000,000 | 100,000,000
Common stock, shares outstanding (in shares) | 91,000,000 | 91,000,000
Otay Mesa VIE [Member] |  |
Current portion of long-term debt | $ 28 | $ 10
Otay Mesa VIE [Member] | San Diego Gas and Electric Company [Member] |  |
Current portion of long-term debt | $ 28 | $ 10
Series A Preferred Stock [Member] |  |
Stockholders' Equity Attributable to Parent [Abstract] |  |
Preferred stock, shares outstanding (in shares) | 17,250,000 |
Preferred stock, shares issued (in shares) | 17,250,000 |
Series B Preferred Stock [Member] |  |
Stockholders' Equity Attributable to Parent [Abstract] |  |
Preferred stock, shares outstanding (in shares) | 5,750,000 |
Preferred stock, shares issued (in shares) | 5,750,000 |

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