SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA - REVENUES (Details) - USD ($) $ in Millions |
12 Months Ended | ||
|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
|
| Revenues Disclosure [Abstract] | |||
| Electric revenues | $ 5,211 | $ 5,158 | $ 5,209 |
| Natural gas revenues | 4,050 | 4,096 | 4,549 |
| Total Utilities Revenues at Sempra Energy Consolidated | $ 9,261 | $ 9,254 | $ 9,758 |