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CONSOLIDATED STATEMENTS OF CHANGES IN EQUITY (Parenthetical) - $ / shares | 12 Months Ended
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Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Common stock dividends declared (USD per share) | $ 3.58 | $ 3.29 | $ 3.02
Preferred Class A [Member] |  |  |
Preferred stock, dividends declared per share (USD per share) | 6.10 |  |
Preferred Class B [Member] |  |  |
Preferred stock, dividends declared per share (USD per share) | 3.41 |  |
Southern California Gas Company [Member] |  |  |
Common stock dividends declared (USD per share) | 1.50 | 1.50 | 1.50
Preferred stock, dividends declared per share (USD per share) | 0.55 |  |
San Diego Gas and Electric Company [Member] |  |  |
Common stock dividends declared (USD per share) | $ 2.14 | $ 3.86 | $ 1.50

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