v3.8.0.1

GENERAL INFORMATION AND OTHER FINANCIAL DATA - CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Mar. 31, 2018 | Mar. 31, 2017 | Jan. 01, 2018
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance | [1] | $ (626,000,000) |  |
Cumulative-effect adjustment from change in accounting principle |  |  |  | $ (1,000,000)
Amounts reclassified from AOCI |  | (6,000,000) | $ 8,000,000 |
AOCI, ending balance |  | (545,000,000) |  |
Foreign currency translation adjustments [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance |  | (420,000,000) | (527,000,000) |
Cumulative-effect adjustment from change in accounting principle |  |  |  | 0
OCI before reclassifications |  | 24,000,000 | 46,000,000 |
Amounts reclassified from AOCI |  | 0 | 0 |
Net OCI |  | 24,000,000 | 46,000,000 |
AOCI, ending balance |  | (396,000,000) | (481,000,000) |
Financial instruments [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance |  | (122,000,000) | (125,000,000) |
Cumulative-effect adjustment from change in accounting principle |  |  |  | (3,000,000)
OCI before reclassifications |  | 66,000,000 | (2,000,000) |
Amounts reclassified from AOCI |  | (8,000,000) | 6,000,000 |
Net OCI |  | 58,000,000 | 4,000,000 |
AOCI, ending balance |  | (67,000,000) | (121,000,000) |
Pension and other postretirement benefits [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance |  | (84,000,000) | (96,000,000) |
Cumulative-effect adjustment from change in accounting principle |  |  |  | 0
OCI before reclassifications |  | 0 | 0 |
Amounts reclassified from AOCI |  | 2,000,000 | 2,000,000 |
Net OCI |  | 2,000,000 | 2,000,000 |
AOCI, ending balance |  | (82,000,000) | (94,000,000) |
Total accumulated other comprehensive income (loss) [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance |  | (626,000,000) | (748,000,000) |
Cumulative-effect adjustment from change in accounting principle |  |  |  | $ (3,000,000)
OCI before reclassifications |  | 90,000,000 | 44,000,000 |
Amounts reclassified from AOCI |  | (6,000,000) | 8,000,000 |
Net OCI |  | 84,000,000 | 52,000,000 |
AOCI, ending balance |  | (545,000,000) | (696,000,000) |
San Diego Gas and Electric Company [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance | [1] | (8,000,000) |  |
Amounts reclassified from AOCI |  | 0 | 0 |
AOCI, ending balance |  | (8,000,000) |  |
San Diego Gas and Electric Company [Member] | Pension and other postretirement benefits [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance |  | (8,000,000) | (8,000,000) |
AOCI, ending balance |  | (8,000,000) | (8,000,000) |
San Diego Gas and Electric Company [Member] | Total accumulated other comprehensive income (loss) [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance |  | (8,000,000) | (8,000,000) |
AOCI, ending balance |  | (8,000,000) | (8,000,000) |
Southern California Gas Company [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance | [1] | (21,000,000) |  |
Amounts reclassified from AOCI |  | 0 | 0 |
AOCI, ending balance |  | (21,000,000) |  |
Southern California Gas Company [Member] | Financial instruments [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance |  | (13,000,000) | (13,000,000) |
AOCI, ending balance |  | (13,000,000) | (13,000,000) |
Southern California Gas Company [Member] | Pension and other postretirement benefits [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance |  | (8,000,000) | (9,000,000) |
AOCI, ending balance |  | (8,000,000) | (9,000,000) |
Southern California Gas Company [Member] | Total accumulated other comprehensive income (loss) [Member] |  |  |  |
AOCI Including Portion Attributable to Noncontrolling Interest, Net of Tax [Roll Forward] |  |  |  |
AOCI, beginning balance |  | (21,000,000) | (22,000,000) |
AOCI, ending balance |  | $ (21,000,000) | $ (22,000,000) |
[1] | Derived from audited financial statements.

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