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REVENUES - RECEIVABLES FROM REVENUES FROM CONTRACTS WITH CUSTOMERS (Details) - USD ($) $ in Millions | Dec. 31, 2018 | Jan. 01, 2018
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Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | $ 1,354 | $ 1,212
Accounts receivable – trade, net [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | 1,333 | 1,194
Accounts receivable – other, net [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | 11 | 10
Due from unconsolidated affiliates – current [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | 4 | 8
Assets held-for-sale [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | 6 | 0
San Diego Gas and Electric Company [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | 377 | 368
San Diego Gas and Electric Company [Member] | Accounts receivable – trade, net [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | 368 | 362
San Diego Gas and Electric Company [Member] | Accounts receivable – other, net [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | 6 | 3
San Diego Gas and Electric Company [Member] | Due from unconsolidated affiliates – current [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | 3 | 3
Southern California Gas Company [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | 639 | 524
Southern California Gas Company [Member] | Accounts receivable – trade, net [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | 634 | 517
Southern California Gas Company [Member] | Accounts receivable – other, net [Member] |  |
Contract with Customer, Asset [Line Items] |  |
Receivables from revenues from contracts with customers | $ 5 | $ 7

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- Definition [Line Items] for Contract with Customer, Asset [Table] + References No definition available. + Details
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- Definition Amount, after allowance for credit loss, of right to consideration in exchange for good or service transferred to customer when right is conditioned on something other than passage of time. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130531-203044 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 50 -Paragraph 8 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=109196051&loc=SL49130549-203045 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 606 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=82913815&loc=SL49130533-203044 + Details
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- Details
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- Details
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