v3.6.0.2

ACQUISTION AND DIVESTITURE ACTIVITY - DIVESTITURES (Details) $ in Millions |  | 1 Months Ended | 9 Months Ended | 12 Months Ended |  |
--- | --- | --- | --- | --- | --- | ---
Oct. 01, 2014 USD ($) | Sep. 30, 2016 USD ($) | May 31, 2016 USD ($) | Mar. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Apr. 30, 2015 USD ($) MW | Nov. 30, 2014 USD ($) MW | Jul. 31, 2014 USD ($) MW | Mar. 31, 2014 USD ($) MW | Sep. 30, 2016 USD ($) | Dec. 31, 2016 USD ($) | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Sep. 12, 2016 USD ($) | Mar. 29, 2016
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Liabilities assumed |  |  |  |  |  |  |  |  |  |  | $ 1,322 | $ 2 | $ 0 |  |
Equity method investment |  |  |  |  | $ 2,889 |  |  |  |  |  | 2,080 | $ 2,889 |  |  |
Disposal Group Disposed of by Sale [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale of equity interests |  |  |  |  |  |  |  |  |  |  | (130) |  | (60) |  |
Cash |  |  |  |  |  |  |  |  |  |  | 2 |  | 10 |  |
Equity method investment |  |  |  |  |  |  |  |  |  |  | $ 0 |  | $ (1,085) |  |
Rockies Express [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  |  |
Sempra Mexico [Member] | Energia Sierra Juarez Wind Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  |  |  |  |  |  |  |  | 50.00% |  |  |  |
Sempra Mexico [Member] | Energia Sierra Juarez Wind Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |
Generating capacity (in mw) | MW |  |  |  |  |  |  |  | 155 |  |  |  |  |  |  |
Proceeds from sale, net of cash sold |  |  |  |  |  |  |  | $ 24 |  |  |  |  |  |  |
Cash |  |  |  |  |  |  |  | 2 |  |  |  |  |  |  |
Gain on sale of equity interests |  |  |  |  |  |  |  | 19 |  |  |  |  |  |  |
Gain on sale of assets, after tax |  |  |  |  |  |  |  | 14 |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  | 137 |  |  |  |  |  |  |
Long-term debt, including current portion |  |  |  |  |  |  |  | 82 |  |  |  |  |  |  |
Gain attributable to remeasurement, after tax |  |  |  |  |  |  |  | $ 7 |  |  |  |  |  |  |
Sempra Renewables [Member] | Rosamond Solar [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  |  | 100.00% |  |  |  |  |  |  | 100.00% |  |  |
Proceeds from sale |  |  |  |  | $ 26 |  |  |  |  |  |  |  |  |  |
Gain on sale of equity interests |  |  |  |  | 8 |  |  |  |  |  |  |  |  |  |
Gain on sale of assets, after tax |  |  |  |  | 5 |  |  |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  | $ 18 |  |  |  |  |  |  |  |  |  |
Sempra Renewables [Member] | Broken Bow 2 Wind [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  |  |  |  | 50.00% |  |  |  |  |  |  |  |
Generating capacity (in mw) | MW |  |  |  |  |  |  | 75 |  |  |  |  |  |  |  |
Proceeds from sale |  |  |  |  |  |  | $ 58 |  |  |  |  |  |  |  |
Gain on sale of equity interests |  |  |  |  |  |  | 14 |  |  |  |  |  |  |  |
Gain on sale of assets, after tax |  |  |  |  |  |  | 8 |  |  |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  | 151 |  |  |  |  |  |  |  |
Long-term debt, including current portion |  |  |  |  |  |  | $ 72 |  |  |  |  |  |  |  |
Sempra Renewables [Member] | Copper Mountain Solar 3 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  |  |  |  |  |  | 50.00% |  |  |  |  |  |
Generating capacity (in mw) | MW |  |  |  |  |  |  |  |  | 250 |  |  |  |  |  |
Proceeds from sale, net of cash sold |  |  |  |  |  |  |  |  | $ 66 |  |  |  |  |  |
Cash |  |  |  |  |  |  |  |  | 2 |  |  |  |  |  |
Gain on sale of equity interests |  |  |  |  |  |  |  |  | 27 |  |  |  |  |  |
Gain on sale of assets, after tax |  |  |  |  |  |  |  |  | 16 |  |  |  |  |  |
Property, plant and equipment, net |  |  |  |  |  |  |  |  | 247 |  |  |  |  |  |
Long-term debt, including current portion |  |  |  |  |  |  |  |  | $ 97 |  |  |  |  |  |
Sempra LNG & MIdstream [Member] | Mesquite Power [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Generating capacity (in mw) | MW |  |  |  |  |  | 625 |  |  |  |  |  |  |  |  |
Proceeds from sale |  |  |  |  |  | $ 347 |  |  |  |  |  |  |  |  |
Gain on sale of equity interests |  |  |  |  |  | 61 |  |  |  |  |  |  |  |  |
Gain on sale of assets, after tax |  |  |  |  |  | $ 36 |  |  |  |  |  |  |  |  |
Sempra LNG & MIdstream [Member] | Cameron LNG [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee | 50.20% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Property, plant and equipment, net | $ 1,000 |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage of minority partner in equity method investee | 49.80% |  |  |  |  |  |  |  |  |  |  |  |  |  |
Sempra LNG & MIdstream [Member] | Disposal Group Disposed of by Sale [Member] | Energy South [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale of equity interests |  | $ 130 |  |  |  |  |  |  |  |  |  |  |  |  |
Gain on sale of assets, after tax |  | $ 78 |  |  |  |  |  |  |  |  |  |  |  |  |
Percentage of ownership before transaction |  | 100.00% |  |  |  |  |  |  |  |  |  |  |  |  |
Proceeds from sale |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 318 |
Cash |  |  |  |  |  |  |  |  |  |  |  |  |  | $ 2 |
Liabilities assumed |  | $ 67 |  |  |  |  |  |  |  |  |  |  |  |  |
Sempra LNG & MIdstream [Member] | Rockies Express [Member] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  | 25.00% |  |  |  |  |  |  |  |  |  |  | 25.00%
Proceeds from sale of investments |  |  | $ 443 | $ 440 |  |  |  |  |  |  |  |  |  |  |
Equity method investment |  |  |  | 484 |  |  |  |  |  |  |  |  |  |  |
Fair value of investment |  |  |  | 440 |  |  |  |  |  |  |  |  |  |  |
Other than temporary impairment in investment |  |  |  | 44 |  |  |  |  |  | $ 44 |  |  |  |  |
Other than temporary impairment in investment, net of tax |  |  |  | $ 27 |  |  |  |  |  | $ 27 |  |  |  |  |

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