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NEW ACCOUNTING STANDARDS (Tables)
 3 Months Ended
Mar. 31, 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 three months ended March 31, 2017 were impacted as follows:
IMPACT FROM ADOPTION OF ASU 2016-18
(Dollars in millions)
 
Three months ended March 31, 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
$
(93
)
 
$
93

 
$
—

 
Decreases in restricted cash
93

 
(93
)
 
—

 
 
 
 
 
 
 
 
Effect of exchange rate changes on cash and cash equivalents
9

 
(9
)
 
—

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

 
10

 
10

 
 
 
 
 
 
 
 
Decrease in cash and cash equivalents
(59
)
 
59

 
—

 
Decrease in cash, cash equivalents, and restricted cash
—

 
(58
)
 
(58
)
 
 
 
 
 
 
 
 
Cash and cash equivalents, January 1
349

 
(349
)
 
—

 
Cash, cash equivalents and restricted cash, January 1
—

 
425

 
425

 
Cash and cash equivalents, March 31
290

 
(290
)
 
—

 
Cash, cash equivalents and restricted cash, March 31
—

 
367

 
367

 
SDG&E Condensed Consolidated Statement of Cash Flows:
 
 
 
 
 
 
Cash flows from investing activities:
 
 
 
 
 
 
Increases in restricted cash
$
(10
)
 
$
10

 
$
—

 
Decreases in restricted cash
9

 
(9
)
 
—

 
Net cash used in investing activities
(381
)
 
1

 
(380
)
 
 
 
 
 
 
 
 
Increase in cash and cash equivalents
10

 
(10
)
 
—

 
Increase in cash, cash equivalents, and restricted cash
—

 
11

 
11

 
 
 
 
 
 
 
 
Cash and cash equivalents, January 1
8

 
(8
)
 
—

 
Cash, cash equivalents and restricted cash, January 1
—

 
20

 
20

 
Cash and cash equivalents, March 31
18

 
(18
)
 
—

 
Cash, cash equivalents and restricted cash, March 31
—

 
31

 
31

 
Schedule of New Accounting Pronouncements and Changes in Accounting Principles Upon adoption of ASU 2017-07, our Condensed Consolidated Statements of Operations for the three months ended March 31, 2017 were impacted as follows:
IMPACT FROM ADOPTION OF ASU 2017-07
(Dollars in millions)
 
Three months ended March 31, 2017
 
As previously reported
 
Effect of adoption
 
As adjusted
Sempra Energy Condensed Consolidated Statement of Operations:
 
 
 
 
 
Operation and maintenance
$
714

 
$
5

 
$
719

Other income, net
169

 
5

 
174

SDG&E Condensed Consolidated Statement of Operations:
 
 
 
 
 
Operation and maintenance
$
227

 
$
4

 
$
231

Total operating expenses
779

 
4

 
783

Operating income
278

 
(4
)
 
274

Other income, net
18

 
4

 
22

SoCalGas Condensed Statement of Operations:
 
 
 
 
 
Operation and maintenance
$
353

 
$
3

 
$
356

Total operating expenses
926

 
3

 
929

Operating income
315

 
(3
)
 
312

Other income, net
11

 
3

 
14