v3.6.0.2

COMMITMENTS AND CONTINGENCIES - NUCLEAR FUEL DISPOSAL (Details) - USD ($) $ in Millions		1 Months Ended		12 Months Ended
	Apr. 18, 2016	Sep. 30, 2016	May 31, 2016	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Nuclear Fuel Disposal [Line Items]
Increase (Decrease) in Regulatory Assets and Liabilities				$ 3	$ 4	$ (8)
Increase (Decrease) in Balancing Account, Utility				(198)	(586)	317
San Diego Gas and Electric Company [Member]
Nuclear Fuel Disposal [Line Items]
Increase (Decrease) in Balancing Account, Utility				$ (35)	$ (474)	$ 208
Total Ownership [Member] | San Diego Gas and Electric Company [Member]
Nuclear Fuel Disposal [Line Items]
Loss Contingency, Damages Awarded, Value	$ 162
Damages sought		$ 56
San Onofre Nuclear Generating Station (SONGS) [Member] | San Diego Gas and Electric Company [Member]
Nuclear Fuel Disposal [Line Items]
Loss Contingency, Damages Awarded, Value			$ 32
Damages sought		$ 11
Increase (Decrease) in Regulatory Assets and Liabilities			(23)
Increase (Decrease) in Balancing Account, Utility			(8)
Increase Decrease In Operation And Maintenance Cost Balancing Account			$ (1)

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- Definition

Increase (Decrease) In Operation And Maintenance Cost Balancing Account.

+ References

No definition available.

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- Definition

The increase (decrease) during the reporting period in the asset created by the regulatory convention in which costs and revenues associated with certain utility expenses (such as fuel) are accumulated but on which no return is earned.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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- Definition

The increase (decrease) during the reporting period in the value of assets that are created when regulatory agencies permits public utilities to defer costs (revenues) to the balance sheet. This element is a the increase (decrease) of regulatory assets and liabilities combined.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 230
-SubTopic 10
-Section 45
-Paragraph 28
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=56944662&loc=d3e3602-108585

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- Definition

Amount of damages awarded to the plaintiff in the legal matter.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 450
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=25496072&loc=d3e14326-108349

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The value (monetary amount) of the award the plaintiff seeks in the legal matter.

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