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NEW ACCOUNTING STANDARDS (Tables)
 6 Months Ended
Jun. 30, 2018
Accounting Changes and Error Corrections [Abstract]  
New Accounting Pronouncement, Early Adoption Upon adoption of ASU 2016-18, Sempra Energy’s and SDG&E’s Condensed Consolidated Statements of Cash Flows for the six months ended June 30, 2017 were impacted as follows:
IMPACT FROM ADOPTION OF ASU 2016-18
(Dollars in millions)
 
Six months ended June 30, 2017
 
As previously reported
 
Effect of adoption
 
As adjusted
Sempra Energy Condensed Consolidated Statement of Cash Flows:
 
Cash flows from investing activities:
 
 
 
 
 
Increases in restricted cash
$
(194
)
 
$
194

 
$
—

Decreases in restricted cash
185

 
(185
)
 
—

Net cash used in investing activities
(2,067
)
 
9

 
(2,058
)
 
 
 
 
 
 
Effect of exchange rate changes on cash and cash equivalents
8

 
(8
)
 
—

Effect of exchange rate changes on cash, cash equivalents and restricted cash
—

 
10

 
10

 
 
 
 
 
 
Decrease in cash and cash equivalents
(126
)
 
126

 
—

Decrease in cash, cash equivalents, and restricted cash
—

 
(115
)
 
(115
)
 
 
 
 
 
 
Cash and cash equivalents, January 1
349

 
(349
)
 
—

Cash, cash equivalents and restricted cash, January 1
—

 
425

 
425

Cash and cash equivalents, June 30
223

 
(223
)
 
—

Cash, cash equivalents and restricted cash, June 30
—

 
310

 
310

SDG&E Condensed Consolidated Statement of Cash Flows:
 
 
 
 
 
Cash flows from investing activities:
 
 
 
 
 
Increases in restricted cash
$
(20
)
 
$
20

 
$
—

Decreases in restricted cash
18

 
(18
)
 
—

Net cash used in investing activities
(734
)
 
2

 
(732
)
 
 
 
 
 
 
Increase in cash and cash equivalents
4

 
(4
)
 
—

Increase in cash, cash equivalents, and restricted cash
—

 
6

 
6

 
 
 
 
 
 
Cash and cash equivalents, January 1
8

 
(8
)
 
—

Cash, cash equivalents and restricted cash, January 1
—

 
20

 
20

Cash and cash equivalents, June 30
12

 
(12
)
 
—

Cash, cash equivalents and restricted cash, June 30
—

 
26

 
26
Schedule of New Accounting Pronouncements and Changes in Accounting Principles Upon adoption of ASU 2017-07, our Condensed Consolidated Statements of Operations were impacted as follows:
IMPACT FROM ADOPTION OF ASU 2017-07
(Dollars in millions)
 
Three months ended June 30, 2017
 
Six months ended June 30, 2017
 
As previously reported
 
Effect of adoption
 
As adjusted
 
As previously reported
 
Effect of adoption
 
As adjusted
Sempra Energy:
 
 
 
 
 
 
 
 
 
 
 
Operation and maintenance
$
731

 
$
17

 
$
748

 
$
1,445

 
$
22

 
$
1,467

Other (expense) income, net
91

 
17

 
108

 
260

 
22

 
282

SDG&E:
 
 
 
 
 
 
 
 
 
 
 
Operation and maintenance
$
237

 
$
4

 
$
241

 
$
464

 
$
8

 
$
472

Total operating expenses
817

 
4

 
821

 
1,596

 
8

 
1,604

Operating income
241

 
(4
)
 
237

 
519

 
(8
)
 
511

Other income, net
15

 
4

 
19

 
33

 
8

 
41

SoCalGas:
 
 
 
 
 
 
 
 
 
 
 
Operation and maintenance
$
336

 
$
15

 
$
351

 
$
689

 
$
18

 
$
707

Total operating expenses
675

 
15

 
690

 
1,601

 
18

 
1,619

Operating income
95

 
(15
)
 
80

 
410

 
(18
)
 
392

Other income, net
9

 
15

 
24

 
20

 
18

 
38