v3.6.0.2

FAIR VALUE MEASUREMENTS - RECURRING FAIR VALUE MEASURES (Details) - Fair Value, Measurements, Recurring [Member] - USD ($) $ in Millions | Dec. 31, 2016 | Dec. 31, 2015
--- | --- | ---
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Nuclear decommissioning trusts - equity securities | $ 508 | $ 619
Nuclear decommissioning trusts - Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | 52 | 91
Nuclear decomissioning trusts - Municipal debt securities | 206 | 156
Nuclear decommissioning trusts - Other debt securities | 141 | 182
Nuclear decommissioning trusts - Total debt securities | 399 | 429
Nuclear Decommissioning trust netting | 0 | 0
Total nuclear decommissioning trusts | 907 | 1,048
Derivative Asset, Netting | 41 | 24
Assets fair value disclosure, total | 1,072 | 1,188
Derivative Liability, Netting | (35) | (58)
Liabilities fair value disclosure, total | 441 | 242
Interest Rate and Foreign Exchange Instruments [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 9 | 5
Derivative Asset, Netting | 0 | 0
Derivative Liability | 252 | 171
Derivative Liability, Netting | 0 | 0
Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 24 | 34
Derivative Asset, Netting | 9 | (4)
Derivative Liability | 10 | 4
Derivative Liability, Netting | (17) | (4)
Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 132 | 101
Derivative Asset, Netting | 32 | 28
Derivative Liability | 179 | 67
Derivative Liability, Netting | (18) | (54)
Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Nuclear decommissioning trusts - equity securities | 508 | 619
Nuclear decommissioning trusts - Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | 36 | 47
Nuclear decomissioning trusts - Municipal debt securities | 0 | 0
Nuclear decommissioning trusts - Other debt securities | 0 | 0
Nuclear decommissioning trusts - Total debt securities | 36 | 47
Total nuclear decommissioning trusts | 544 | 666
Assets fair value disclosure, total | 545 | 688
Liabilities fair value disclosure, total | 35 | 5
Level 1 [Member] | Interest Rate and Foreign Exchange Instruments [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 | 0
Derivative Liability | 0 | 0
Level 1 [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 | 22
Derivative Liability | 16 | 5
Level 1 [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 1 | 0
Derivative Liability | 19 | 0
Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Nuclear decommissioning trusts - equity securities | 0 | 0
Nuclear decommissioning trusts - Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | 16 | 44
Nuclear decomissioning trusts - Municipal debt securities | 206 | 156
Nuclear decommissioning trusts - Other debt securities | 141 | 182
Nuclear decommissioning trusts - Total debt securities | 363 | 382
Total nuclear decommissioning trusts | 363 | 382
Assets fair value disclosure, total | 390 | 404
Liabilities fair value disclosure, total | 271 | 242
Level 2 [Member] | Interest Rate and Foreign Exchange Instruments [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 9 | 5
Derivative Liability | 252 | 171
Level 2 [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 15 | 16
Derivative Liability | 11 | 3
Level 2 [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 3 | 1
Derivative Liability | 8 | 68
Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Nuclear decommissioning trusts - equity securities | 0 | 0
Nuclear decommissioning trusts - Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | 0 | 0
Nuclear decomissioning trusts - Municipal debt securities | 0 | 0
Nuclear decommissioning trusts - Other debt securities | 0 | 0
Nuclear decommissioning trusts - Total debt securities | 0 | 0
Total nuclear decommissioning trusts | 0 | 0
Assets fair value disclosure, total | 96 | 72
Liabilities fair value disclosure, total | 170 | 53
Level 3 [Member] | Interest Rate and Foreign Exchange Instruments [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 | 0
Derivative Liability | 0 | 0
Level 3 [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 | 0
Derivative Liability | 0 | 0
Level 3 [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 96 | 72
Derivative Liability | 170 | 53
San Diego Gas and Electric Company [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Nuclear decommissioning trusts - equity securities | 508 | 619
Nuclear decommissioning trusts - Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | 52 | 91
Nuclear decomissioning trusts - Municipal debt securities | 206 | 156
Nuclear decommissioning trusts - Other debt securities | 141 | 182
Nuclear decommissioning trusts - Total debt securities | 399 | 429
Nuclear Decommissioning trust netting | 0 | 0
Total nuclear decommissioning trusts | 907 | 1,048
Derivative Asset, Netting | 31 | 28
Assets fair value disclosure, total | 1,037 | 1,148
Derivative Liability, Netting | (16) | (55)
Liabilities fair value disclosure, total | 203 | 103
San Diego Gas and Electric Company [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 1 | 1
Derivative Asset, Netting | 1 | 1
Derivative Liability |  | 0
Derivative Liability, Netting |  | (1)
San Diego Gas and Electric Company [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 129 | 99
Derivative Asset, Netting | 30 | 27
Derivative Liability | 178 | 66
Derivative Liability, Netting | (16) | (54)
San Diego Gas and Electric Company [Member] | Interest rate instruments [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Liability | 25 | 37
Derivative Liability, Netting | 0 | 0
San Diego Gas and Electric Company [Member] | Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Nuclear decommissioning trusts - equity securities | 508 | 619
Nuclear decommissioning trusts - Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | 36 | 47
Nuclear decomissioning trusts - Municipal debt securities | 0 | 0
Nuclear decommissioning trusts - Other debt securities | 0 | 0
Nuclear decommissioning trusts - Total debt securities | 36 | 47
Total nuclear decommissioning trusts | 544 | 666
Assets fair value disclosure, total | 545 | 666
Liabilities fair value disclosure, total | 17 | 1
San Diego Gas and Electric Company [Member] | Level 1 [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 | 0
Derivative Liability |  | 1
San Diego Gas and Electric Company [Member] | Level 1 [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 1 | 0
Derivative Liability | 17 | 0
San Diego Gas and Electric Company [Member] | Level 1 [Member] | Interest rate instruments [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Liability | 0 | 0
San Diego Gas and Electric Company [Member] | Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Nuclear decommissioning trusts - equity securities | 0 | 0
Nuclear decommissioning trusts - Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | 16 | 44
Nuclear decomissioning trusts - Municipal debt securities | 206 | 156
Nuclear decommissioning trusts - Other debt securities | 141 | 182
Nuclear decommissioning trusts - Total debt securities | 363 | 382
Total nuclear decommissioning trusts | 363 | 382
Assets fair value disclosure, total | 365 | 382
Liabilities fair value disclosure, total | 32 | 104
San Diego Gas and Electric Company [Member] | Level 2 [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 | 0
Derivative Liability |  | 0
San Diego Gas and Electric Company [Member] | Level 2 [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 2 | 0
Derivative Liability | 7 | 67
San Diego Gas and Electric Company [Member] | Level 2 [Member] | Interest rate instruments [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Liability | 25 | 37
San Diego Gas and Electric Company [Member] | Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Nuclear decommissioning trusts - equity securities | 0 | 0
Nuclear decommissioning trusts - Debt securities issued by the U.S. Treasury and other U.S. government corporations and agencies | 0 | 0
Nuclear decomissioning trusts - Municipal debt securities | 0 | 0
Nuclear decommissioning trusts - Other debt securities | 0 | 0
Nuclear decommissioning trusts - Total debt securities | 0 | 0
Total nuclear decommissioning trusts | 0 | 0
Assets fair value disclosure, total | 96 | 72
Liabilities fair value disclosure, total | 170 | 53
San Diego Gas and Electric Company [Member] | Level 3 [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 | 0
Derivative Liability |  | 0
San Diego Gas and Electric Company [Member] | Level 3 [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 96 | 72
Derivative Liability | 170 | 53
San Diego Gas and Electric Company [Member] | Level 3 [Member] | Interest rate instruments [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Liability | 0 | 0
Southern California Gas Company [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset, Netting | 3 | 1
Assets fair value disclosure, total | 4 | 2
Derivative Liability, Netting | (2) | (1)
Liabilities fair value disclosure, total | 1 | 1
Southern California Gas Company [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 1 |
Derivative Asset, Netting | 1 |
Derivative Liability |  | 0
Derivative Liability, Netting |  | (1)
Southern California Gas Company [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 3 | 2
Derivative Asset, Netting | 2 | 1
Derivative Liability | 1 | 1
Derivative Liability, Netting | (2) | 0
Southern California Gas Company [Member] | Level 1 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets fair value disclosure, total | 0 | 0
Liabilities fair value disclosure, total | 2 | 1
Southern California Gas Company [Member] | Level 1 [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 |
Derivative Liability |  | 1
Southern California Gas Company [Member] | Level 1 [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 | 0
Derivative Liability | 2 | 0
Southern California Gas Company [Member] | Level 2 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets fair value disclosure, total | 1 | 1
Liabilities fair value disclosure, total | 1 | 1
Southern California Gas Company [Member] | Level 2 [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 |
Derivative Liability |  | 0
Southern California Gas Company [Member] | Level 2 [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 1 | 1
Derivative Liability | 1 | 1
Southern California Gas Company [Member] | Level 3 [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Assets fair value disclosure, total | 0 | 0
Liabilities fair value disclosure, total | 0 | 0
Southern California Gas Company [Member] | Level 3 [Member] | Commodity contracts not subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 |
Derivative Liability |  | 0
Southern California Gas Company [Member] | Level 3 [Member] | Commodity contracts subject to rate recovery [Member] |  |
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items] |  |
Derivative Asset | 0 | 0
Derivative Liability | $ 0 | $ 0

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- Definition Fair value assets measured on a recurring basis nuclear decommissioning trusts, total debt securities. + References No definition available. + Details
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- Definition Fair value portion of probable future economic benefits obtained or controlled by an entity as a result of past transactions or events. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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- Definition The fair value of investments held in a trust fund to pay for the costs of decontaminating and decommissioning facilities, whether such amount is presented as a separate caption or as a parenthetical disclosure on the balance sheet. Additionally, this element may be used in connection with the fair value disclosures required in the footnote disclosures to the financial statements. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 410 -SubTopic 20 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6392692&loc=d3e7535-110849 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial asset or other contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes assets not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13495-108611 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313 + Details
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- Definition Fair value, after the effects of master netting arrangements, of a financial liability or contract with one or more underlyings, notional amount or payment provision or both, and the contract can be net settled by means outside the contract or delivery of an asset. Includes liabilities not subject to a master netting arrangement and not elected to be offset. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 55 -Paragraph 10 -URI http://asc.fasb.org/extlink&oid=51825145&loc=SL20226008-175313 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 15 -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13495-108611 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 20 -Section 50 -Paragraph 3 -Subparagraph (c) -URI http://asc.fasb.org/extlink&oid=51824906&loc=SL20225862-175312 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 825 -SubTopic 10 -Section 50 -Paragraph 10 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=49121117&loc=d3e13433-108611 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 6 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41271-113958 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=6945355&loc=d3e41228-113958 + Details
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- Definition The fair value as of the balance sheet date of firm holdings in corporate stocks (common and preferred), stock options, warrants and any other financial instrument which represents, or provides the ability to obtain, ownership rights in a corporation. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
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- Definition The fair value as of the balance sheet date of firm holdings in other positions not elsewhere specified in the taxonomy. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
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- Definition The fair value as of the balance sheet date of firm holdings in fixed income obligations issued by state and local governments and authorities. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
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- Definition The fair value as of the balance sheet date of firm holdings in debt obligations issued by the US government including short-term Treasury bills, medium-term Treasury notes, and long-term Treasury bonds, as well as debt issued by agencies. Includes both pledged (to counterparties as collateral for financing transactions) and unpledged holdings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 940 -SubTopic 320 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35711157&loc=d3e42546-110969 + Details
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- Definition Fair value of financial and nonfinancial obligations. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 820 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=36462937&loc=d3e19207-110258 + Details
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