DERIVATIVE COMMODITY VOLUMES (Details)		Jun. 30, 2016	Dec. 31, 2015
S D G E Segment [Member]
Derivatives, Fair Value [Line Items]
Commodity Derivative Volumes Natural Gas	[1]	72	70
Commodity Derivative Volumes Electric Power	[2]	1	1
Commodity Derivative Volumes Congestion Revenue Rights	[2]	30	36
So Cal Gas Segment [Member]
Derivatives, Fair Value [Line Items]
Commodity Derivative Volumes Natural Gas	[1]	0	1
Sempra Natural Gas Segment [Member]
Derivatives, Fair Value [Line Items]
Commodity Derivative Volumes Natural Gas	[1]	30	43

[1] Million British thermal units

[2] Megawatt hours