v3.6.0.2

INCOME TAXES - COMPONENTS OF INCOME TAX EXPENSE (BENEFIT) (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Current Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
U.S. federal | $ 0 | $ 3 | $ (10)
U.S. state | 1 | (24) | (7)
Non-U.S. | 171 | 123 | 171
Total | 172 | 102 | 154
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
U.S. federal | 78 | 242 | 237
U.S. state | 9 | 34 | 4
Non-U.S. | 135 | (32) | (91)
Total | 222 | 244 | 150
Deferred investment tax credits | (5) | (5) | (4)
Total income tax expense | 389 | 341 | 300
Parent Company [Member] |  |  |
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
Total income tax expense | (181) | (150) | (133)
San Diego Gas and Electric Company [Member] |  |  |
Current Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
U.S. federal | 0 | 12 | (5)
U.S. state | 22 | 77 | 52
Total | 22 | 89 | 47
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
U.S. federal | 223 | 233 | 220
U.S. state | 38 | (35) | 5
Total | 261 | 198 | 225
Deferred investment tax credits | (3) | (3) | (2)
Total income tax expense | 280 | 284 | 270
Southern California Gas Company [Member] |  |  |
Current Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
U.S. federal | 0 | (1) | 2
U.S. state | 40 | 12 | 7
Total | 40 | 11 | 9
Deferred Income Tax Expense (Benefit), Continuing Operations [Abstract] |  |  |
U.S. federal | 123 | 122 | 117
U.S. state | (18) | 7 | 15
Total | 105 | 129 | 132
Deferred investment tax credits | (2) | (2) | (2)
Total income tax expense | $ 143 | $ 138 | $ 139

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