CALIFORNIA UTILITIES' REGULATORY MATTERS - GENERAL RATE CASE (Details) - USD ($)
$ in Millions |
|
3 Months Ended |
9 Months Ended |
Oct. 31, 2016 |
Jun. 30, 2016 |
Sep. 30, 2016 |
| San Diego Gas and Electric Company [Member] |
|
|
|
| Public Utilities, General Disclosures [Line Items] |
|
|
|
| Retroactive revenue requirement increase for the first quarter of 2016, After-tax |
|
$ 9
|
|
| Refund of 2015 memorandum account, Pretax |
|
37
|
|
| Refund of 2015 memorandum account, After-tax |
|
22
|
|
| Adjustment To Revenue, True Up Of 2012-2014 Tax Estimates |
|
9
|
|
| Increase (decrease) in final tax deduction refund |
|
|
$ (5)
|
| San Diego Gas and Electric Company [Member] | Year 2015 [Member] | Subsequent Event [Member] |
|
|
|
| Public Utilities, General Disclosures [Line Items] |
|
|
|
| Requested rate decrease from proposed settlement |
$ 32
|
|
|
| San Diego Gas and Electric Company [Member] | Year 2016 [Member] |
|
|
|
| Public Utilities, General Disclosures [Line Items] |
|
|
|
| Revenue requirement |
|
|
1,791
|
| Requested rate decrease from proposed settlement |
|
|
20
|
| Revenue revised requirement |
|
|
1,811
|
| Regulatory asset |
|
|
25
|
| Regulatory asset, Noncurrent |
|
|
5
|
| Reduction in rate base |
|
|
55
|
| Reduction in revenue requirements |
|
|
$ 7
|
| Regulatory Liability |
|
15
|
|
| San Diego Gas and Electric Company [Member] | Years 2017 and 2018 [Member] |
|
|
|
| Public Utilities, General Disclosures [Line Items] |
|
|
|
| Annual escalation (percentage) |
|
|
3.50%
|
| Deductible |
|
|
$ 5
|
| Southern California Gas Company [Member] |
|
|
|
| Public Utilities, General Disclosures [Line Items] |
|
|
|
| Retroactive revenue requirement increase for the first quarter of 2016, After-tax |
|
12
|
|
| Refund of 2015 memorandum account, Pretax |
|
72
|
|
| Refund of 2015 memorandum account, After-tax |
|
43
|
|
| Adjustment To Revenue, True Up Of 2012-2014 Tax Estimates |
|
6
|
|
| Increase (decrease) in final tax deduction refund |
|
|
(19)
|
| Southern California Gas Company [Member] | Year 2015 [Member] | Subsequent Event [Member] |
|
|
|
| Public Utilities, General Disclosures [Line Items] |
|
|
|
| Requested rate decrease from proposed settlement |
$ 53
|
|
|
| Southern California Gas Company [Member] | Year 2016 [Member] |
|
|
|
| Public Utilities, General Disclosures [Line Items] |
|
|
|
| Revenue requirement |
|
|
2,204
|
| Requested rate decrease from proposed settlement |
|
|
15
|
| Revenue revised requirement |
|
|
2,219
|
| Regulatory asset |
|
|
58
|
| Regulatory asset, Noncurrent |
|
|
12
|
| Reduction in rate base |
|
|
38
|
| Reduction in revenue requirements |
|
|
$ 5
|
| Regulatory Liability |
|
$ 11
|
|
| Southern California Gas Company [Member] | Years 2017 and 2018 [Member] |
|
|
|
| Public Utilities, General Disclosures [Line Items] |
|
|
|
| Annual escalation (percentage) |
|
|
3.50%
|
| Deductible |
|
|
$ 5
|