v3.8.0.1

GENERAL INFORMATION AND OTHER FINANCIAL DATA - DUE TO DUE FROM AFFILIATES (Details) $ in Billions | 3 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Mar. 31, 2018 USD ($) | Dec. 31, 2017 USD ($) | Mar. 31, 2018 MXN ($)
Related Party Transaction [Line Items] |  |  |  |
Due from unconsolidated affiliates - current | $ 63,000,000 | $ 37,000,000 | [1] |
Due from unconsolidated affiliates - noncurrent | 666,000,000 | 598,000,000 | [1] |
Due to unconsolidated affiliates, current | (6,000,000) | (7,000,000) | [1] |
Due to Affiliate, Noncurrent | $ (35,000,000) | (35,000,000) | [1] |
ESJ joint venture [Member] | LIBOR [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Spread on variable rate | 637.50% |  |  |
Interest rate on due from affiliate, noncurrent | 8.26% |  |  |
TAG Pipeline Norte [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Interest rate on due from affiliate, noncurrent | 5.35% |  |  |
TAG Pipeline Norte [Member] | LIBOR [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Spread on variable rate | 290.00% |  |  |
San Diego Gas and Electric Company [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due to unconsolidated affiliates, current | $ (43,000,000) | (40,000,000) | [1] |
Maximum borrowing capacity | 750,000,000 |  |  |
San Diego Gas and Electric Company [Member] | Due to/from Other affiliates [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due to unconsolidated affiliates, current | (6,000,000) | (6,000,000) |  |
San Diego Gas and Electric Company [Member] | Due to/from Sempra Energy [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due to unconsolidated affiliates, current | (32,000,000) | (30,000,000) |  |
Income taxes due (to) from Sempra Energy | (39,000,000) | 27,000,000 |  |
San Diego Gas and Electric Company [Member] | Due to/from SoCalGas [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due to unconsolidated affiliates, current | (5,000,000) | (4,000,000) |  |
Southern California Gas Company [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due from unconsolidated affiliates - current | 6,000,000 | 4,000,000 | [1] |
Due to unconsolidated affiliates, current | (37,000,000) | (35,000,000) | [1] |
Maximum borrowing capacity | 750,000,000 |  |  |
Southern California Gas Company [Member] | Due to/from Other affiliates [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due from unconsolidated affiliates - current | 1,000,000 | 0 |  |
Southern California Gas Company [Member] | Due to/from Sempra Energy [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due to unconsolidated affiliates, current | (37,000,000) | (35,000,000) |  |
Income taxes due (to) from Sempra Energy | (2,000,000) | 10,000,000 |  |
Southern California Gas Company [Member] | Due to/from SDG&E [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due from unconsolidated affiliates - current | 5,000,000 | 4,000,000 |  |
Sempra South American Utilities [Member] | Eletrans [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due from unconsolidated affiliates - noncurrent | $ 38,000,000 | 103,000,000 |  |
Interest rate on due from affiliate, noncurrent | 4.00% |  |  |
Sempra South American Utilities [Member] | Due to/from Other affiliates [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due from unconsolidated affiliates - noncurrent | $ 1,000,000 | 1,000,000 |  |
Sempra Mexico [Member] | IMG [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due from unconsolidated affiliates - noncurrent | 621,000,000 | 487,000,000 |  |
Maximum borrowing capacity | $ 777,000,000 |  |  | $ 14.2
Sempra Mexico [Member] | IMG [Member] | Interbank Equilibrium Rate [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Spread on variable rate | 220.00% |  |  |
Interest rate on due from affiliate, noncurrent | 10.07% |  |  |
Sempra Mexico [Member] | ESJ joint venture [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due from unconsolidated affiliates - noncurrent | $ 6,000,000 | 7,000,000 |  |
Sempra Mexico [Member] | TAG Pipeline Norte [Member] |  |  |  |
Related Party Transaction [Line Items] |  |  |  |
Due to Affiliate, Noncurrent | $ (35,000,000) | $ (35,000,000) |  |
[1] | Derived from audited financial statements.

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