v3.6.0.2

INVESTMENTS IN UNCONSOLIDATED ENTITIES - NARRATIVE (Details) $ in Millions |  | 1 Months Ended | 12 Months Ended |  |  |  |  |  |  |
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Jul. 16, 2014 MW | Apr. 30, 2015 USD ($) | Jul. 31, 2014 MW | Dec. 31, 2016 USD ($) MT Bcf | Dec. 31, 2015 USD ($) | Dec. 31, 2014 USD ($) | Sep. 27, 2016 | Sep. 26, 2016 USD ($) | Sep. 25, 2016 | May 31, 2016 | Jun. 30, 2015 USD ($) | Nov. 30, 2014 USD ($) | Oct. 01, 2014 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Undistributed earnings of equity method investments |  |  |  | $ 44 | $ 299 |  |  |  |  |  |  |  |
Ownership percentage of operating partner |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
Equity Method Investments in Joint Ventures, capitalized interest |  |  |  | $ 236 | 201 | $ 167 |  |  |  |  |  |  |
Current guarantor obligations |  |  |  | $ 43 |  |  |  |  |  |  |  |  |
Indirect economic and beneficial and ownership interest prior to financial completion |  |  |  | 37.65% |  |  |  |  |  |  |  |  |
Equity Method and Other Investments |  |  |  | $ 2,080 | 2,889 |  |  |  |  |  |  |  |
R B S Sempra Commodities [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Equity Method and Other Investments |  |  |  | $ 67 | 67 |  |  |  |  |  |  |  |
Rockies Express [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  |  |  |  |  |  |  | 25.00% |  |  |
Payments to acquire equity method investments |  | $ 113 |  |  |  |  |  |  |  |  |  |  |
Cameron LNG [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Payments to acquire equity method investments |  |  |  |  | 10 |  |  |  |  |  |  |  |
Proved developed reserves | Bcf |  |  |  | 1.5 |  |  |  |  |  |  |  |  |
Project capacity | MT |  |  |  | 13.9 |  |  |  |  |  |  |  |  |
Proved undeveloped reserve | MT |  |  |  | 12 |  |  |  |  |  |  |  |  |
Proved undeveloped reserve per day | Bcf |  |  |  | 1.7 |  |  |  |  |  |  |  |  |
Equity Method Investments in Joint Ventures, capitalized interest |  |  |  | $ 47 | $ 49 |  |  |  |  |  |  |  |
Debt amount |  |  |  | $ 7,400 |  |  |  |  |  |  |  |  |
Fair value at origin guarantee obligation associated with cash flow requirements |  |  |  |  |  |  |  |  |  |  |  |  | $ 82
Indirect economic and beneficial and ownership interest after financial completion |  |  |  | 10.00% |  |  |  |  |  |  |  |  |
Weighted average rate prior to project completion |  |  |  | 1.59% |  |  |  |  |  |  |  |  |
Weighted average rate after project completion |  |  |  | 1.78% |  |  |  |  |  |  |  |  |
Notional amount of derivatives |  |  |  |  |  |  |  |  |  |  | $ 1,500 | $ 3,700 |
Fixed percentage interest rate |  |  |  |  |  |  |  |  |  |  |  | 3.19% |
Percentage of debt hedged by interest rate derivatives |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
Threshold for canceling of hedge, Percent of unamortized principal |  |  |  | 50.00% |  |  |  |  |  |  |  |  |
Other Long Term Debt, Due July 2030 [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Completion guarantees |  |  |  | 50.20% |  |  |  |  |  |  |  |  |
Debt instrument, maximum borrowing amount |  |  |  | $ 3,900 |  |  |  |  |  |  |  |  |
Other Project Partners [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Completion guarantees |  |  |  | 49.80% |  |  |  |  |  |  |  |  |
LIBOR [Member] | Cameron LNG [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Fixed percentage interest rate |  |  |  |  |  |  |  |  |  |  | 3.32% |  |
Sempra Mexico [Member] | Gasoductos De Chihuahua [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  |  |  |  | 100.00% | 100.00% | 50.00% |  |  |  |
Equity Method and Other Investments |  |  |  |  |  |  |  | $ 520 |  |  |  |  |
Acquired percentage interest |  |  |  |  |  |  |  | 50.00% |  |  |  |  |
Sempra Mexico [Member] | Infraestructura Marina del Golfo [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  | 40.00% |  |  |  |  |  |  |  |  |
Payments to acquire equity method investments |  |  |  | $ 100 |  |  |  |  |  |  |  |  |
Transportation service contract term |  |  |  | 25 years |  |  |  |  |  |  |  |  |
Sempra Mexico [Member] | TransCanada [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  | 60.00% |  |  |  |  |  |  |  |  |
Sempra Mexico [Member] | Energia Sierra Juarez Wind Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
Sempra Mexico [Member] | Energia Sierra Juarez Wind Project [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee | 50.00% |  |  |  |  |  |  |  |  |  |  |  |
Generating capacity (in mw) | MW | 155 |  | 155 |  |  |  |  |  |  |  |  |  |
Sempra Mexico [Member] | DEN [Member] | Gasoductos De Chihuahua [Member] |  |  |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |  |  |
Ownership percentage in equity method investee |  |  |  |  |  |  |  | 50.00% |  |  |  |  |

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