DEBT AND CREDIT FACILITIES (Details) - USD ($) $ in Millions	Jun. 30, 2015	Dec. 31, 2014
Line Of Credit Facility, Sempra Energy Consolidated [Member]
Line of Credit Facility [Line Items]
Committed lines of credit, maximum borrowing capacity	$ 4,100
Committed lines of credit, remaining borrowing capacity	$ 3,500
Weighted average interest rate on total short-term debt outstanding	0.78%	0.70%
Line Of Credit Facility, Sempra Energy [Member]
Line of Credit Facility [Line Items]
Committed lines of credit, maximum borrowing capacity	$ 1,067
Committed lines of credit, maximum ratio of indebtedness to total capitalization	65.00%
Committed lines of credit, capacity for issuance of letters of credit	$ 635
Committed lines of credit, outstanding borrowings	0
Line Of Credit Facility, Sempra Global [Member]
Line of Credit Facility [Line Items]
Committed lines of credit, maximum borrowing capacity	$ 2,189
Committed lines of credit, maximum ratio of indebtedness to total capitalization	65.00%
Outstanding commercial paper supported by committed lines of credit	$ 600
Line Of Credit Facility, S D G E [Member]
Line of Credit Facility [Line Items]
Committed lines of credit, maximum borrowing capacity	$ 658
Committed lines of credit, maximum ratio of indebtedness to total capitalization	65.00%
Committed lines of credit, remaining borrowing capacity	$ 618
Outstanding commercial paper supported by committed lines of credit	$ 40
Weighted average interest rate on total short-term debt outstanding	0.18%	0.27%
Line Of Credit Facility, So Cal Gas [Member]
Line of Credit Facility [Line Items]
Committed lines of credit, maximum borrowing capacity	$ 658
Committed lines of credit, maximum ratio of indebtedness to total capitalization	65.00%
Committed lines of credit, remaining borrowing capacity	$ 658
Outstanding letters of credit	0
Weighted average interest rate on total short-term debt outstanding		0.25%
Line Of Credit Facility, California Utilities Combined [Member]
Line of Credit Facility [Line Items]
Committed lines of credit, maximum borrowing capacity	877
Committed lines of credit, capacity for issuance of letters of credit	300
Line Of Credit Facility, South American Utilities And Mexico [Member]
Line of Credit Facility [Line Items]
Committed lines of credit, maximum borrowing capacity	848
Committed lines of credit, remaining borrowing capacity	576
Line Of Credit Facility, IEnova Santander [Member]
Line of Credit Facility [Line Items]
Committed lines of credit, maximum borrowing capacity	200
Committed lines of credit, remaining borrowing capacity	150
Committed lines of credit, outstanding borrowings	50
Line Of Credit Facility, IEnova Sumitomo [Member]
Line of Credit Facility [Line Items]
Committed lines of credit, maximum borrowing capacity	100
Committed lines of credit, remaining borrowing capacity	75
Committed lines of credit, outstanding borrowings	$ 25