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REGULATORY MATTERS - REGULATORY ACCOUNTS (Details) - USD ($) $ in Millions | Mar. 31, 2019 | Dec. 31, 2018
--- | --- | ---
Net Regulatory Assets (Liabilities) Sempra Energy Consolidated [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | $ (2,594) | $ (2,394)
San Diego Gas and Electric Company [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Regulatory balancing accounts - net undercollected, Noncurrent | 84 | 78
San Diego Gas and Electric Company [Member] | Fixed-price contracts and other derivatives [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (144) | (150)
San Diego Gas and Electric Company [Member] | Deferred income taxes (refundable) recoverable in rates [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (171) | (236)
San Diego Gas and Electric Company [Member] | Pension and other postretirement benefit plan obligations [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 190 | 186
San Diego Gas and Electric Company [Member] | Removal obligations [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (1,946) | (1,848)
San Diego Gas and Electric Company [Member] | Unamortized loss on reacquired debt [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 6 | 7
San Diego Gas and Electric Company [Member] | Environmental costs [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 27 | 28
San Diego Gas and Electric Company [Member] | Sunrise Powerlink fire mitigation [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 121 | 120
San Diego Gas and Electric Company [Member] | Regulatory Balancing Accounts, Commodity – electric [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 60 | (8)
San Diego Gas and Electric Company [Member] | Regulatory Balancing Accounts, Gas transportation [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 13 | 45
San Diego Gas and Electric Company [Member] | Regulatory Balancing Accounts, Safety and reliability [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 77 | 70
San Diego Gas and Electric Company [Member] | Regulatory Balancing Accounts, Public purpose programs [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (80) | (62)
San Diego Gas and Electric Company [Member] | Regulatory Balancing Accounts, Other balancing accounts [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 67 | 145
San Diego Gas and Electric Company [Member] | Other regulatory (liabilities) assets [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (199) | (177)
San Diego Gas and Electric Company [Member] | Net Regulatory Assets (Liabilities) SDGE [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (1,979) | (1,880)
Southern California Gas Company [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Regulatory balancing accounts - net undercollected, Noncurrent | 405 | 185
Southern California Gas Company [Member] | Deferred income taxes (refundable) recoverable in rates [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (248) | (336)
Southern California Gas Company [Member] | Pension and other postretirement benefit plan obligations [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 479 | 470
Southern California Gas Company [Member] | Employee benefit costs [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 49 | 49
Southern California Gas Company [Member] | Removal obligations [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (804) | (833)
Southern California Gas Company [Member] | Unamortized loss on reacquired debt [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 6 | 7
Southern California Gas Company [Member] | Environmental costs [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 32 | 28
Southern California Gas Company [Member] | Workers’ compensation [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 9 | 9
Southern California Gas Company [Member] | Regulatory Balancing Accounts, Commodity - gas including transportation |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 16 | 196
Southern California Gas Company [Member] | Regulatory Balancing Accounts, Safety and reliability [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 348 | 332
Southern California Gas Company [Member] | Regulatory Balancing Accounts, Public purpose programs [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (289) | (325)
Southern California Gas Company [Member] | Regulatory Balancing Accounts, Other balancing accounts [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (143) | (68)
Southern California Gas Company [Member] | Other regulatory (liabilities) assets [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (160) | (130)
Southern California Gas Company [Member] | Net Regulatory Assets (Liabilities) SoCalGas [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | (705) | (601)
Sempra Mexico [Member] | Deferred income taxes (refundable) recoverable in rates [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | 81 | 81
Sempra Mexico [Member] | Other regulatory (liabilities) assets [Member] |  |
Schedule Of Net Regulatory Assets (Liabilities) [Line Items] |  |
Net regulatory assets (liabilities) | $ 9 | $ 6

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