v3.6.0.2

INCOME TAXES - NET OPERATING LOSSES AND TAX CREDIT CARRYFORWARDS (Details) - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Operating Loss Carryforwards [Line Items] |  |
Valuation allowances | $ 31 | $ 34
U.S. Federal [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
NOLs | 5,514 |
Tax credits | 62 |
U.S. Federal [Member] | General general business tax credits [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits | 329 |
U.S. state [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
NOLs | 2,836 |
U.S. state [Member] | General general business tax credits [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits | 44 |
U.S. state [Member] | Deferred Tax Assets, Operating Loss and Tax Credit Carryforwards [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Valuation allowances | 30 | 28
Non-U.S. [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
NOLs and tax credits | 843 |
Non-U.S. [Member] | Deferred Tax Assets, Operating Loss Carryforwards [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Valuation allowances | 1 | $ 6
San Diego Gas and Electric Company [Member] | U.S. Federal [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
NOLs | 39 |
San Diego Gas and Electric Company [Member] | U.S. Federal [Member] | General general business tax credits [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits | 19 |
Southern California Gas Company [Member] | U.S. Federal [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
NOLs | 289 |
Southern California Gas Company [Member] | U.S. Federal [Member] | General general business tax credits [Member] |  |
Operating Loss Carryforwards [Line Items] |  |
Tax credits | $ 12 |

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