v3.6.0.2

INCOME TAXES - RECONCILIATION TO EFFECTIVE TAX RATE (Details) - USD ($) $ in Millions | 12 Months Ended
--- | ---
Dec. 31, 2016 | Dec. 31, 2015 | Dec. 31, 2014
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |  |
U.S. federal statutory income tax rate | 35.00% | 35.00% | 35.00%
Utility depreciation | 4.00% | 5.00% | 5.00%
U.S. tax on repatriation of foreign earnings | (1.00%) | 1.00% | 2.00%
State income taxes, net of federal income tax benefit | 1.00% | 1.00% | 0.00%
Utility repairs expenditures | (4.00%) | (5.00%) | (5.00%)
Tax credits | (3.00%) | (4.00%) | (4.00%)
Self-developed software expenditures | (3.00%) | (3.00%) | (3.00%)
Resolution of prior years’ income tax items | 0.00% | (3.00%) | (1.00%)
Non-U.S. earnings taxed at lower statutory income tax rates | (3.00%) | (2.00%) | (2.00%)
Allowance for equity funds used during construction | (2.00%) | (2.00%) | (2.00%)
Foreign exchange and inflation effects | (2.00%) | (2.00%) | (2.00%)
Share-based compensation | (2.00%) | 0.00% | 0.00%
International tax reform | 1.00% | 0.00% | (1.00%)
Other, net | 0.00% | (1.00%) | (2.00%)
Effective income tax rate | 21.00% | 20.00% | 20.00%
Reversal of previous income tax expense | $ 20 |  |
Distributions from non-U.S. subsidiaries |  |  | $ 288
Distributions from non-U.S. subsidiaries previously taxed |  |  | 100
Income Tax Expense Louisiana valuation allowance release |  |  | 25
SONGS tax regulatory asset write-off |  |  | 17
Income (Loss) from Continuing Operations before Income Taxes, Domestic | 773 | $ 1,189 | 1,014
Income (Loss) from Continuing Operations before Income Taxes, Foreign | 1,057 | 515 | 510
Income before income taxes | $ 1,830 | $ 1,704 | $ 1,524
San Diego Gas and Electric Company [Member] |  |  |
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |  |
U.S. federal statutory income tax rate | 35.00% | 35.00% | 35.00%
Utility depreciation | 5.00% | 4.00% | 4.00%
SONGS tax regulatory asset write-off | 0.00% | 0.00% | 2.00%
State income taxes, net of federal income tax benefit | 5.00% | 5.00% | 5.00%
Utility repairs expenditures | (4.00%) | (4.00%) | (4.00%)
Self-developed software expenditures | (3.00%) | (3.00%) | (3.00%)
Resolution of prior years’ income tax items | (1.00%) | (2.00%) | (2.00%)
Allowance for equity funds used during construction | (2.00%) | (2.00%) | (2.00%)
Share-based compensation | (1.00%) | 0.00% | 0.00%
Variable interest entity | 0.00% | (1.00%) | (1.00%)
Other, net | (1.00%) | 0.00% | 0.00%
Effective income tax rate | 33.00% | 32.00% | 34.00%
Income before income taxes | $ 845 | $ 890 | $ 797
Southern California Gas Company [Member] |  |  |
Effective Income Tax Rate Reconciliation, Percent [Abstract] |  |  |
U.S. federal statutory income tax rate | 35.00% | 35.00% | 35.00%
Utility depreciation | 9.00% | 8.00% | 8.00%
State income taxes, net of federal income tax benefit | 2.00% | 4.00% | 4.00%
Utility repairs expenditures | (9.00%) | (10.00%) | (9.00%)
Self-developed software expenditures | (6.00%) | (6.00%) | (5.00%)
Resolution of prior years’ income tax items | 2.00% | (3.00%) | (2.00%)
Allowance for equity funds used during construction | (2.00%) | (2.00%) | (2.00%)
Share-based compensation | (1.00%) | 0.00% | 0.00%
Other, net | (1.00%) | (1.00%) | 0.00%
Effective income tax rate | 29.00% | 25.00% | 29.00%
Income before income taxes | $ 493 | $ 558 | $ 472

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