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SEGMENT INFORMATION (Details) $ in Millions | 12 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2018 USD ($) segment | Dec. 31, 2017 USD ($) | Dec. 31, 2016 USD ($) | Jun. 25, 2018 | Mar. 09, 2018
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Number of reportable segments | segment | 7 |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | $ 11,687 | $ 11,207 |  | $ 10,183 |  |  |
Segment reporting information, Interest Expense | 925 | 659 | [1] | 553 | [1] |  |
Segment reporting information, Interest Income | 104 | 46 | [1] | 26 | [1] |  |
Segment reporting information, Depreciation and Amortization | 1,549 | 1,490 |  | 1,312 |  |  |
Income tax expense | 96 | 1,276 | [1] | 389 | [1] |  |
Earnings attributable to common shares | 924 | 256 | [1] | 1,370 | [1] |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Segment Reporting Information Expenditures For Property Plant and Equipment | 3,784 | 3,949 |  | 4,214 |  |  |
Segment reporting information, Assets | 60,638 | 50,454 |  | 47,786 |  |  |
Assets, geographical | 48,785 | 39,030 |  | 35,028 |  |  |
Entity-Wide Disclosure On Geographic Areas, United States [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 8,840 | 8,547 |  | 8,004 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Assets, geographical | 40,611 | 31,487 |  | 28,351 |  |  |
Entity-Wide Disclosure On Geographic Areas Mexico [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 1,262 | 1,093 |  | 623 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Assets, geographical | 5,800 | 5,363 |  | 4,814 |  |  |
Entity-Wide Disclosure On Geographic Areas, South America [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 1,585 | 1,567 |  | 1,556 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Assets, geographical | 2,374 | 2,180 |  | 1,863 |  |  |
Operating Segments [Member] | SDG&E [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 4,568 | 4,476 |  | 4,253 |  |  |
Segment reporting information, Interest Expense | 221 | 203 |  | 195 |  |  |
Segment reporting information, Interest Income | 4 | 0 |  | 0 |  |  |
Segment reporting information, Depreciation and Amortization | 688 | 670 |  | 646 |  |  |
Income tax expense | 173 | 155 |  | 280 |  |  |
Earnings attributable to common shares | 669 | 407 |  | 570 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Segment Reporting Information Expenditures For Property Plant and Equipment | 1,542 | 1,555 |  | 1,399 |  |  |
Segment reporting information, Assets | 19,225 | 17,844 |  | 17,719 |  |  |
Operating Segments [Member] | SoCalGas [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 3,962 | 3,785 |  | 3,471 |  |  |
Segment reporting information, Interest Expense | 115 | 102 |  | 97 |  |  |
Segment reporting information, Interest Income | 2 | 1 |  | 1 |  |  |
Segment reporting information, Depreciation and Amortization | 556 | 515 |  | 476 |  |  |
Income tax expense | 92 | 160 |  | 143 |  |  |
Earnings attributable to common shares | 400 | 396 |  | 349 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Segment Reporting Information Expenditures For Property Plant and Equipment | 1,538 | 1,367 |  | 1,319 |  |  |
Segment reporting information, Assets | 15,389 | 14,159 |  | 13,424 |  |  |
Operating Segments [Member] | Sempra Texas Utility [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Earnings attributable to common shares | 371 | 0 |  | 0 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Segment reporting information, Assets | 9,652 | 0 |  | 0 |  |  |
Operating Segments [Member] | Sempra South American Utilities [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 1,585 | 1,567 |  | 1,556 |  |  |
Segment reporting information, Interest Expense | 40 | 38 |  | 38 |  |  |
Segment reporting information, Interest Income | 31 | 28 |  | 21 |  |  |
Segment reporting information, Depreciation and Amortization | 58 | 54 |  | 49 |  |  |
Income tax expense | 95 | 80 |  | 80 |  |  |
Earnings attributable to common shares | 199 | 186 |  | 156 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Segment Reporting Information Expenditures For Property Plant and Equipment | 240 | 244 |  | 194 |  |  |
Segment reporting information, Assets | 4,107 | 4,060 |  | 3,591 |  |  |
Operating Segments [Member] | Sempra Mexico [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 1,376 | 1,196 |  | 725 |  |  |
Segment reporting information, Interest Expense | 120 | 97 |  | 13 |  |  |
Segment reporting information, Interest Income | 65 | 23 |  | 6 |  |  |
Segment reporting information, Depreciation and Amortization | 175 | 156 |  | 77 |  |  |
Income tax expense | 185 | 227 |  | 188 |  |  |
Earnings attributable to common shares | 237 | 169 |  | 463 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Segment Reporting Information Expenditures For Property Plant and Equipment | 368 | 248 |  | 330 |  |  |
Segment reporting information, Assets | 9,165 | 8,554 |  | 7,542 |  |  |
Operating Segments [Member] | Sempra Renewables [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 124 | 94 |  | 34 |  |  |
Segment reporting information, Interest Expense | 19 | 15 |  | 4 |  |  |
Segment reporting information, Interest Income | 12 | 7 |  | 5 |  |  |
Segment reporting information, Depreciation and Amortization | 27 | 38 |  | 6 |  |  |
Income tax expense | 71 | (226) |  | (38) |  |  |
Earnings attributable to common shares | 328 | 252 |  | 55 |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Segment Reporting Information Expenditures For Property Plant and Equipment | 51 | 497 |  | 835 |  |  |
Segment reporting information, Assets | 2,549 | 2,898 |  | 3,644 |  |  |
Operating Segments [Member] | Sempra LNG & Midstream [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 472 | 540 |  | 508 |  |  |
Segment reporting information, Interest Expense | 21 | 39 |  | 43 |  |  |
Segment reporting information, Interest Income | 49 | 56 |  | 71 |  |  |
Segment reporting information, Depreciation and Amortization | 26 | 42 |  | 47 |  |  |
Income tax expense | (435) | (119) |  | (80) |  |  |
Earnings attributable to common shares | (617) | 150 |  | (107) |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Segment Reporting Information Expenditures For Property Plant and Equipment | 31 | 20 |  | 117 |  |  |
Segment reporting information, Assets | 4,060 | 4,872 |  | 5,564 |  |  |
Adjustment and Elimination [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | (3) | (1) |  | 0 |  |  |
Intersegment Eliminations [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | (397) | (450) |  | (364) |  |  |
Segment reporting information, Interest Expense | (107) | (119) |  | (119) |  |  |
Segment reporting information, Interest Income | (73) | (69) |  | (78) |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Segment reporting information, Assets | (4,240) | (2,848) |  | (4,173) |  |  |
Intersegment Eliminations [Member] | SDG&E [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 4 | 7 |  | 6 |  |  |
Intersegment Eliminations [Member] | SoCalGas [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 64 | 74 |  | 76 |  |  |
Intersegment Eliminations [Member] | Sempra Mexico [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 114 | 103 |  | 102 |  |  |
Intersegment Eliminations [Member] | Sempra LNG & Midstream [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Revenue | 215 | 266 |  | 180 |  |  |
All Other [Member] |  |  |  |  |  |  |
Segment Reporting Information, Profit (Loss) [Abstract] |  |  |  |  |  |  |
Segment reporting information, Interest Expense | 496 | 284 |  | 282 |  |  |
Segment reporting information, Interest Income | 14 | 0 |  | 0 |  |  |
Segment reporting information, Depreciation and Amortization | 19 | 15 |  | 11 |  |  |
Income tax expense | (85) | 999 |  | (184) |  |  |
Earnings attributable to common shares | (663) | (1,304) |  | (116) |  |  |
Segment Reporting Information, Additional Information [Abstract] |  |  |  |  |  |  |
Segment Reporting Information Expenditures For Property Plant and Equipment | 14 | 18 |  | 20 |  |  |
Segment reporting information, Assets | $ 731 | $ 915 |  | $ 475 |  |  |
Oncor Electric Delivery Company LLC [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Acquired percentage interest |  |  |  |  |  |  | 80.25%
Oncor Holdings Electric Delivery Company LLC [Member] | Oncor Electric Delivery Company LLC [Member] | Sempra Texas Utility [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Ownership interest | 80.25% |  |  |  |  |  |
Disposal Group Held-for-sale [Member] | Bay Gas [Member] | Non-utility Natural gas Storage Assets [Member] | Sempra LNG & Midstream [Member] |  |  |  |  |  |  |
Segment Reporting Information [Line Items] |  |  |  |  |  |  |
Ownership interest |  |  |  |  |  | 90.90% |
[1] | As adjusted for the retrospective adoption of ASU 2017-07, which we discuss in Note 2, and a reclassification to conform to current year presentation, which we discuss in Note 1.

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