OTHER FINANCIAL DATA - INVENTORIES (Details) - USD ($)
$ in Millions |
Sep. 30, 2016 |
Dec. 31, 2015 |
| Inventory [Line Items] |
|
|
|
| Natural gas |
$ 119
|
$ 149
|
|
| Liquefied natural gas |
7
|
6
|
|
| Materials and supplies |
176
|
143
|
|
| Total |
302
|
298
|
[1] |
| LIFO reserve |
8
|
|
|
| SDG&E [Member] |
|
|
|
| Inventory [Line Items] |
|
|
|
| Natural gas |
1
|
6
|
|
| Liquefied natural gas |
0
|
0
|
|
| Materials and supplies |
72
|
69
|
|
| Total |
73
|
75
|
|
| SoCalGas [Member] |
|
|
|
| Inventory [Line Items] |
|
|
|
| Natural gas |
24
|
49
|
|
| Liquefied natural gas |
0
|
0
|
|
| Materials and supplies |
53
|
30
|
|
| Total |
77
|
79
|
|
| Sempra South American Utilities [Member] |
|
|
|
| Inventory [Line Items] |
|
|
|
| Natural gas |
0
|
0
|
|
| Liquefied natural gas |
0
|
0
|
|
| Materials and supplies |
46
|
30
|
|
| Total |
46
|
30
|
|
| Sempra Mexico [Member] |
|
|
|
| Inventory [Line Items] |
|
|
|
| Natural gas |
0
|
0
|
|
| Liquefied natural gas |
4
|
3
|
|
| Materials and supplies |
2
|
10
|
|
| Total |
6
|
13
|
|
| Sempra Renewables [Member] |
|
|
|
| Inventory [Line Items] |
|
|
|
| Natural gas |
0
|
0
|
|
| Liquefied natural gas |
0
|
0
|
|
| Materials and supplies |
3
|
3
|
|
| Total |
3
|
3
|
|
| Sempra Natural Gas [Member] |
|
|
|
| Inventory [Line Items] |
|
|
|
| Natural gas |
94
|
94
|
|
| Liquefied natural gas |
3
|
3
|
|
| Materials and supplies |
0
|
1
|
|
| Total |
97
|
98
|
|
| Southern California Gas Company [Member] |
|
|
|
| Inventory [Line Items] |
|
|
|
| Total |
77
|
$ 79
|
[1] |
| LIFO reserve |
8
|
|
|
| Southern California Gas Company [Member] | Minimum [Member] |
|
|
|
| Inventory [Line Items] |
|
|
|
| Permanent LIFO liquidation |
10
|
|
|
| Southern California Gas Company [Member] | Maximum [Member] |
|
|
|
| Inventory [Line Items] |
|
|
|
| Permanent LIFO liquidation |
$ 15
|
|
|
|
|