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EMPLOYEE BENEFIT PLANS - PLAN ASSETS (Details) | 12 Months Ended
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Dec. 31, 2018
Defined Benefit Plan Disclosure [Line Items] |
Expected return on plan assets | 7.00%
Domestic Equity [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Targeted plan asset allocations | 35.00%
International Equity [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Targeted plan asset allocations | 24.00%
Long Credit [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Targeted plan asset allocations | 18.00%
Ultra-long duration government securities [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Targeted plan asset allocations | 8.00%
Defined Benefit Plan, Real Estate [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Targeted plan asset allocations | 5.00%
Return Seeking Credit [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Targeted plan asset allocations | 5.00%
Real Assets [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Targeted plan asset allocations | 5.00%
Return Seeking Assets [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocations | 74.00%
Risk Mitigating Assets [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocations | 26.00%
Minimum [Member] | Return Seeking Assets [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Expected return on plan assets | 7.00%
Minimum [Member] | Risk Mitigating Assets [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Expected return on plan assets | 3.00%
Maximum [Member] | Return Seeking Assets [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Expected return on plan assets | 9.00%
Maximum [Member] | Risk Mitigating Assets [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Expected return on plan assets | 5.00%
Southern California Gas Company [Member] | Return Seeking Assets [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocations | 38.00%
Southern California Gas Company [Member] | Risk Mitigating Assets [Member] |
Defined Benefit Plan Disclosure [Line Items] |
Asset allocations | 62.00%

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- Definition Weighted average rate of return on plan assets, reflecting average rate of earnings expected on existing plan assets and expected contributions, used to determine net periodic benefit cost of defined benefit plan. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (k)(3) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
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- Definition Percentage of target investment allocation to total plan assets. Includes, but is not limited to, percentage on weighted-average basis if more than one plan. + References Reference 1: http://www.xbrl.org/2003/role/exampleRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 55 -Paragraph 17 -URI http://asc.fasb.org/extlink&oid=112275985&loc=d3e4179-114921 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 715 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (d)(i) -URI http://asc.fasb.org/extlink&oid=108410482&loc=d3e1928-114920 + Details
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