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SIGNIFICANT ACCOUNTING POLICIES AND OTHER FINANCIAL DATA (Tables)
12 Months Ended
Dec. 31, 2018
Organization, Consolidation and Presentation of Financial Statements [Abstract]  
Schedule of Prior Period Adjustments The following table summarizes the financial statement line items that were affected by this reclassification:
SEMPRA ENERGY – RECLASSIFICATION
(Dollars in millions)
 
 
 
Years ended December 31,
 
2017
 
2016
 
As previously presented
 
As currently presented
 
As previously presented
 
As currently presented
Consolidated Statements of Operations:
 
 
 
 
 
 
 
Equity earnings, before income tax
$
34

 
$

 
$
6

 
$

Income before income taxes and equity earnings
 
 
 
 
 
 
 
of certain unconsolidated subsidiaries
1,585

 

 
1,830

 

Income before income taxes and equity earnings of
 
 
 
 
 
 
 
unconsolidated entities

 
1,551

 

 
1,824

Equity earnings, net of income tax
42

 

 
78

 

Equity earnings

 
76

 

 
84

Schedule of Cash, Cash Equivalents and Restricted Cash The following table provides a reconciliation of cash, cash equivalents, and restricted cash reported on the Consolidated Balance Sheets to the sum of such amounts reported on the Consolidated Statements of Cash Flows.
RECONCILIATION OF CASH, CASH EQUIVALENTS AND RESTRICTED CASH
 
 
 
(Dollars in millions)
 
At December 31,
 
2018
 
2017
Sempra Energy Consolidated:
 
 
 
Cash and cash equivalents
$
190

 
$
288

Restricted cash, current
35

 
62

Restricted cash, noncurrent
21

 
14

Total cash, cash equivalents and restricted cash on the Consolidated Statements of Cash Flows
$
246

 
$
364

SDG&E:
 

 
 

Cash and cash equivalents
$
8

 
$
12

Restricted cash, current
11

 
6

Restricted cash, noncurrent
18

 
11

Total cash, cash equivalents and restricted cash on the Consolidated Statements of Cash Flows
$
37

 
$
29

Schedule Of Receivables Collection Allowances We record allowances for the collection of trade and other accounts and notes receivable, which include allowances for doubtful customer accounts and for other receivables. We show the changes in these allowances in the table below:
COLLECTION ALLOWANCES
(Dollars in millions)
 
Years ended December 31,
 
2018
 
2017
 
2016
Sempra Energy Consolidated:
 
 
 
 
 
Allowances for collection of receivables at January 1
$
33

 
$
35

 
$
32

Provisions for uncollectible accounts
14

 
16

 
23

Write-offs of uncollectible accounts
(17
)
 
(18
)
 
(20
)
Allowances for collection of receivables at December 31
$
30

 
$
33

 
$
35

SDG&E:
 

 
 

 
 

Allowances for collection of receivables at January 1
$
9

 
$
8

 
$
9

Provisions for uncollectible accounts
9

 
8

 
6

Write-offs of uncollectible accounts
(7
)
 
(7
)
 
(7
)
Allowances for collection of receivables at December 31
$
11

 
$
9

 
$
8

SoCalGas:
 

 
 

 
 

Allowances for collection of receivables at January 1
$
16

 
$
21

 
$
17

Provisions for uncollectible accounts
1

 
4

 
14

Write-offs of uncollectible accounts
(7
)
 
(9
)
 
(10
)
Allowances for collection of receivables at December 31
$
10

 
$
16

 
$
21

Schedule of Inventory The components of inventories by segment are as follows:
INVENTORY BALANCES AT DECEMBER 31
(Dollars in millions)
 
Natural gas
 
LNG
 
Materials and supplies
 
Total
 
2018
 
2017
 
2018
 
2017
 
2018
 
2017
 
2018
 
2017
SDG&E
$

 
$
4

 
$

 
$

 
$
102

 
$
101

 
$
102

 
$
105

SoCalGas
92

 
75

 

 

 
42

 
49

 
134

 
124

Sempra South American Utilities

 

 

 

 
38

 
30

 
38

 
30

Sempra Mexico

 

 
4

 
7

 
15

 
2

 
19

 
9

Sempra Renewables

 

 

 

 

 
5

 

 
5

Sempra LNG & Midstream
3

 
30

 

 
4

 

 

 
3

 
34

Sempra Energy Consolidated
$
95

 
$
109

 
$
4

 
$
11

 
$
197

 
$
187

 
$
296

 
$
307

Schedule of Property, Plant and Equipment
PROPERTY, PLANT AND EQUIPMENT BY MAJOR FUNCTIONAL CATEGORY
 
(Dollars in millions)
 
 
PP&E at
December 31,
 
Depreciation rates for
years ended
December 31,
 
 
2018
 
2017
 
2018
 
2017
 
2016
 
SDG&E:
 
 
 
 
 
 
 
 
 
 
Natural gas operations
$
2,382

 
$
2,186

 
2.44
%
 
2.40
%
 
2.40
%
 
Electric distribution
7,462

 
6,975

 
3.91

 
3.92

 
3.86

 
Electric transmission(1)
6,222

 
5,626

 
2.76

 
2.71

 
2.66

 
Electric generation(2)
2,967

 
2,435

 
4.12

 
4.05

 
4.00

 
Other electric(3)
1,408

 
1,114

 
6.43

 
5.54

 
5.66

 
Construction work in progress(1)
1,221

 
1,451

 
NA

 
NA

 
NA

 
Total SDG&E
21,662

 
19,787

 
 

 
 

 
 

 
SoCalGas:
 

 
 

 
 

 
 

 
 

 
Natural gas operations(4)
17,268

 
15,759

 
3.60

 
3.63

 
3.64

 
Other non-utility
34

 
32

 
5.39

 
5.28

 
6.55

 
Construction work in progress
836

 
981

 
NA

 
NA

 
NA

 
Total SoCalGas
18,138

 
16,772

 
 

 
 

 
 

 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
Estimated
Weighted-average
Other operating units and parent(5):
 

 
 

 
useful lives
useful life
Land and land rights
429

 
416

 
16 to 50 years(6)
30
Machinery and equipment:
 

 
 

 
 
 


 
 
 
Utility electric distribution operations
1,977

 
1,751

 
10 to 45 years
41
Generating plants
1,051

 
2,242

 
5 to 100 years
30
LNG terminals
1,134

 
1,133

 
43 years
43
Pipelines and storage
3,413

 
4,408

 
5 to 50 years
41
Other
205

 
269

 
1 to 50 years
7
Construction work in progress
684

 
691

 
NA
NA
Other(7)
622

 
639

 
3 to 80 years
31
 
9,515

 
11,549

 
 
 
 

 
 
 
Total Sempra Energy Consolidated
$
49,315

 
$
48,108

 
 
 
 

 
 
 
(1) 
At December 31, 2018, includes $457 million in electric transmission assets and $26 million in construction work in progress related to SDG&E’s 92-percent interest in the Southwest Powerlink transmission line, jointly owned by SDG&E with other utilities. SDG&E, and each of the other owners, holds its undivided interest as a tenant in common in the property. Each owner is responsible for its share of the project and participates in decisions concerning operations and capital expenditures. SDG&E’s share of operating expenses is included in Sempra Energy’s and SDG&E’s Consolidated Statements of Operations.
(2) 
Includes capital lease assets of $1.3 billion and $757 million at December 31, 2018 and 2017, respectively.
(3) 
Includes capital lease assets of $13 million and $22 million at December 31, 2018 and 2017, respectively.
(4) 
Includes capital lease assets of $40 million and $34 million at December 31, 2018 and 2017, respectively.
(5) 
Includes $154 million and $145 million at December 31, 2018 and 2017, respectively, of utility plant, primarily pipelines and other distribution assets at Ecogas.
(6) 
Estimated useful lives are for land rights.
(7) 
Includes capital lease assets of $136 million and associated leasehold improvements of $24 million at both December 31, 2018 and 2017 related to a build-to-suit lease.

DEPRECIATION EXPENSE
(Dollars in millions)
 
Years ended December 31,
 
2018
 
2017
 
2016
Sempra Energy Consolidated
$
1,528

 
$
1,422

 
$
1,236

SDG&E
686

 
621

 
583

SoCalGas
553

 
514

 
474


ACCUMULATED DEPRECIATION
(Dollars in millions)
 
December 31,
 
2018
 
2017
SDG&E:
 
 
 
Accumulated depreciation:
 
 
 
Electric(1)
$
4,558

 
$
4,193

Natural gas
794

 
756

Total SDG&E
5,352

 
4,949

SoCalGas:
 

 
 

Accumulated depreciation of natural gas utility plant in service(2)
5,685

 
5,352

Accumulated depreciation  other non-utility
14

 
14

Total SoCalGas
5,699

 
5,366

Other operating units and parent and other:
 

 
 

Accumulated depreciation  other(3)
1,125

 
972

Accumulated depreciation of utility electric distribution operations
343

 
318

 
1,468

 
1,290

Total Sempra Energy Consolidated
$
12,519

 
$
11,605

(1) 
Includes accumulated depreciation for capital lease assets of $48 million and $47 million at December 31, 2018 and 2017, respectively. Includes $252 million at December 31, 2018 related to SDG&E’s 92-percent interest in the Southwest Powerlink transmission line, jointly owned by SDG&E and other utilities.
(2) 
Includes accumulated depreciation for capital lease assets of $37 million and $33 million at December 31, 2018 and 2017, respectively.
(3) 
Includes accumulated depreciation for capital lease assets of $10 million and $7 million and for associated leasehold improvements of $3 million and $2 million at December 31, 2018 and 2017, respectively, related to a build-to-suit lease. Includes $43 million and $39 million at December 31, 2018 and 2017, respectively, of accumulated depreciation for utility plant at Ecogas.
Schedule Of Capitalized Financing Costs Interest capitalized and AFUDC are as follows:
CAPITALIZED FINANCING COSTS
(Dollars in millions)
 
Years ended December 31,
 
2018
 
2017
 
2016
Sempra Energy Consolidated
$
202

 
$
256

 
$
236

SDG&E
82

 
85

 
62

SoCalGas
48

 
60

 
55

Schedule Of Goodwill Changes in the carrying amount of goodwill on the Sempra Energy Consolidated Balance Sheets are as follows:
GOODWILL
 
 
 
 
 
(Dollars in millions)
 
 
 
 
 
 
Sempra
South American Utilities
 
Sempra
Mexico
 
Total
Balance at December 31, 2016
$
749

 
$
1,615

 
$
2,364

Acquisition of business – measurement period adjustment

 
(13
)
 
(13
)
Foreign currency translation(1)
46

 

 
46

Balance at December 31, 2017
795

 
1,602

 
2,397

Acquisition of business
38

 

 
38

Foreign currency translation(1)
(62
)
 

 
(62
)
Balance at December 31, 2018
$
771

 
$
1,602


$
2,373

(1) 
We record the offset of this fluctuation to OCI.
Schedule Of Other Intangible Assets Other Intangible Assets included on the Sempra Energy Consolidated Balance Sheets are as follows:
OTHER INTANGIBLE ASSETS
 
 
 
 
 
(Dollars in millions)
 
 
 
 
 
 
Amortization period
(years)
 
December 31,
 
 
2018
 
2017
Development rights
50
 
$

 
$
322

Renewable energy transmission and consumption permit
19
 
154

 
154

Storage rights
46
 

 
138

O&M agreement
23
 
66

 
66

Concession permits
Indefinite
 
50

 

Other
10 years to indefinite
 
28

 
18

 
 
 
298

 
698

Less accumulated amortization:
 
 
 

 
 

Development rights
 
 

 
(60
)
Renewable energy transmission and consumption permit
 
 
(16
)
 
(8
)
Storage rights
 
 

 
(28
)
O&M agreement
 
 
(3
)
 

Other
 
 
(7
)
 
(6
)
 
 
 
(26
)
 
(102
)
 
 
 
$
272

 
$
596

Schedule Of Variable Interest Entities
AMOUNTS ASSOCIATED WITH TAX EQUITY ARRANGEMENTS
 
(Dollars in millions)
 
 
December 31,
 
2018
2017
Cash and cash equivalents
$
7

$
23

Accounts receivable – trade, net
2

5

Inventories

1

Other
1

1

Total current assets
10

30

Sundry

2

Property, plant and equipment, net
286

1,412

Total assets
296

1,444

 
 
 
Accounts payable
2

42

Other
1

1

Total current liabilities
3

43

Asset retirement obligations
6

40

Deferred income taxes
7

10

Deferred credits and other

1

Total liabilities
16

94

 
 
 
Other noncontrolling interests
158

631

Net assets less other noncontrolling interests
$
122

$
719

 
Years ended December 31,
 
2018
 
2017
 
2016
REVENUES
 
 
 
 
 
Energy-related businesses
$
92

 
$
61

 
$
2

EXPENSES
 
 
 
 
 
Operation and maintenance
(16
)
 
(9
)
 
(1
)
Depreciation and amortization
(47
)
 
(32
)
 

Income before income taxes
29

 
20

 
1

Income tax expense
(18
)
 
(4
)
 

Net income
11

 
16

 
1

Losses attributable to noncontrolling interests(1)
58

 
23

 
4

Earnings
$
69

 
$
39

 
$
5

(1) Net income or loss attributable to NCI is computed using the HLBV method and is not based on ownership percentages.The Consolidated Financial Statements of Sempra Energy and SDG&E include the following amounts associated with Otay Mesa VIE. The amounts are net of eliminations of transactions between SDG&E and Otay Mesa VIE. The captions in the tables below correspond to SDG&E’s Consolidated Balance Sheets and Consolidated Statements of Operations.
AMOUNTS ASSOCIATED WITH OTAY MESA VIE
(Dollars in millions)
 
December 31,
 
2018
 
2017
Cash and cash equivalents
$

 
$
4

Restricted cash
11

 
6

Inventories
4

 
4

Other
2

 
1

Total current assets
17

 
15

Restricted cash
18

 
11

Property, plant and equipment, net
295

 
321

Total assets
$
330

 
$
347

 
 
 
 
Current portion of long-term debt
$
28

 
$
10

Fixed-price contracts and other derivatives
1

 
10

Other
3

 
5

Total current liabilities
32

 
25

Long-term debt
190

 
284

Fixed-price contracts and other derivatives

 
3

Deferred credits and other
8

 
7

Noncontrolling interest
100

 
28

Total liabilities and equity
$
330

 
$
347

 
Years ended December 31,
 
2018
 
2017
 
2016
Operating expenses
 
 
 
 
 
Cost of electric fuel and purchased power
$
(75
)
 
$
(79
)
 
$
(79
)
Operation and maintenance
17

 
17

 
29

Depreciation and amortization
30

 
28

 
35

Total operating expenses
(28
)
 
(34
)
 
(15
)
Operating income
28

 
34

 
15

Other income
2

 
2

 

Interest expense
(23
)
 
(22
)
 
(20
)
Income (loss) before income taxes/Net income (loss)
7

 
14

 
(5
)
(Earnings) losses attributable to noncontrolling interest
(7
)
 
(14
)
 
5

Earnings attributable to common shares
$

 
$

 
$

Schedule Of Asset Retirement Obligations The changes in ARO are as follows:
CHANGES IN ASSET RETIREMENT OBLIGATIONS
(Dollars in millions)
 
Sempra Energy
Consolidated
 
SDG&E
 
SoCalGas
 
2018
 
2017
 
2018
 
2017
 
2018
 
2017
Balance as of January 1(1)
$
2,877

 
$
2,553

 
$
839

 
$
830

 
$
1,953

 
$
1,659

Accretion expense
121

 
109

 
39

 
39

 
78

 
66

Liabilities incurred
7

 
34

 

 
17

 

 

Deconsolidation and reclassification(2)
(61
)
 

 

 

 

 

Payments
(42
)
 
(63
)
 
(39
)
 
(61
)
 
(3
)
 
(2
)
Revisions(3)
71

 
244

 
35

 
14

 
35

 
230

Balance at December 31(1)
$
2,973

 
$
2,877

 
$
874

 
$
839

 
$
2,063

 
$
1,953

(1) 
Current portion of the ARO for Sempra Energy Consolidated is included in Other Current Liabilities on the Consolidated Balance Sheets.
(2) 
In 2018, we reclassified $6 million at Sempra Renewables and $8 million at Sempra LNG & Midstream to Liabilities Held for Sale, and $5 million related to TdM from Liabilities Held for Sale, and deconsolidated $52 million at Sempra Renewables, as we discuss in Note 5.
(3) 
In 2017, revised estimates were primarily related to underground natural gas storage facilities and wells at SoCalGas.
Schedule Of Changes In Accumulated Other Comprehensive Income By Component The following tables present the changes in AOCI by component and amounts reclassified out of AOCI to net income, excluding amounts attributable to NCI:
CHANGES IN ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS) BY COMPONENT(1)
(Dollars in millions)
 
Foreign
currency
translation
adjustments
Financial
instruments
 
Pension
and other
postretirement
benefits
 
Total
accumulated other
comprehensive income (loss)
Sempra Energy Consolidated:
 
 
 
 
 
 
 
Balance as of December 31, 2015
$
(582
)
 
$
(137
)
 
$
(87
)
 
$
(806
)
 
 
 
 
 
 
 
 
OCI before reclassifications
42

 
(7
)
 
(15
)
 
20

Amounts reclassified from AOCI(2)
13

 
19

 
6

 
38

Net OCI
55

 
12

 
(9
)
 
58

Balance as of December 31, 2016
(527
)
 
(125
)
 
(96
)
 
(748
)
 
 
 
 
 
 
 
 
OCI before reclassifications
107

 
(4
)
 

 
103

Amounts reclassified from AOCI

 
7

 
12

 
19

Net OCI
107

 
3

 
12

 
122

Balance as of December 31, 2017
(420
)
 
(122
)
 
(84
)
 
(626
)
Cumulative-effect adjustment from change in accounting principle(3)

 
(3
)
 

 
(3
)
 
 
 
 
 
 
 
 
OCI before reclassifications
(144
)
 
40

 
(52
)
 
(156
)
Amounts reclassified from AOCI

 
3

 
18

 
21

Net OCI
(144
)
 
43

 
(34
)
 
(135
)
Balance as of December 31, 2018
$
(564
)
 
$
(82
)

$
(118
)

$
(764
)
SDG&E:
 
 
 
 
 
 
 
Balance as of December 31, 2015


 


 
$
(8
)
 
$
(8
)
 
 
 
 
 
 
 
 
OCI before reclassifications


 


 
(1
)
 
(1
)
Amounts reclassified from AOCI


 


 
1

 
1

Net OCI


 


 

 

Balance as of December 31, 2016


 


 
(8
)
 
(8
)
 
 
 
 
 
 
 
 
OCI before reclassifications


 


 
(1
)
 
(1
)
Amounts reclassified from AOCI


 


 
1

 
1

Net OCI


 


 

 

Balance as of December 31, 2017


 


 
(8
)
 
(8
)
 
 
 
 
 
 
 
 
OCI before reclassifications


 


 
(6
)
 
(6
)
Amounts reclassified from AOCI


 


 
4

 
4

Net OCI


 


 
(2
)
 
(2
)
Balance as of December 31, 2018


 


 
$
(10
)
 
$
(10
)
SoCalGas:
 
 
 
 
 
 
 
Balance as of December 31, 2015


 
$
(14
)
 
$
(5
)
 
$
(19
)
 
 
 
 
 
 
 
 
OCI before reclassifications


 

 
(4
)
 
(4
)
Amounts reclassified from AOCI
 
 
1

 

 
1

Net OCI


 
1

 
(4
)
 
(3
)
Balance as of December 31, 2016


 
(13
)
 
(9
)
 
(22
)
 
 
 
 
 
 
 
 
Amounts reclassified from AOCI
 
 

 
1

 
1

Net OCI


 

 
1

 
1

Balance as of December 31, 2017


 
(13
)
 
(8
)
 
(21
)
 
 
 
 
 
 
 
 
OCI before reclassifications


 

 
(1
)
 
(1
)
Amounts reclassified from AOCI


 
1

 
1

 
2

Net OCI


 
1

 

 
1

Balance as of December 31, 2018


 
$
(12
)
 
$
(8
)
 
$
(20
)
(1) 
All amounts are net of income tax, if subject to tax, and exclude NCI.
(2) 
Total AOCI includes $20 million associated with the October 2016 sale of NCI, discussed below in “Sale of Noncontrolling Interests – Sempra Mexico – Follow-On Offerings,” which does not impact the Consolidated Statement of Comprehensive Income.
(3) 
Represents impact from adoption of ASU 2017-12, which we discuss in Note 2.
Schedule Of Reclassifications Out Of Accumulated Other Comprehensive Income
RECLASSIFICATIONS OUT OF ACCUMULATED OTHER COMPREHENSIVE INCOME (LOSS)
(Dollars in millions)
Details about accumulated
other comprehensive income (loss) components
Amounts reclassified from accumulated
other comprehensive income (loss)
 
Affected line item on
Consolidated Statements of Operations
 
Years ended December 31,
 
 
 
2018
 
2017
 
2016
 
 
Sempra Energy Consolidated:
 
 
 
 
 
 
 
Financial instruments:
 

 
 

 
 

 
 
Interest rate and foreign exchange instruments(1)
$

 
$
(4
)
 
$
17

 
Interest Expense
 
(2
)
 

 

 
Other Income, Net
Interest rate instruments
9

 

 

 
Gain on Sale of Assets
Interest rate and foreign exchange instruments
7

 
20

 
15

 
Equity Earnings
Interest rate and foreign exchange instruments

 

 
7

 
Remeasurement of Equity Method
Investment
Foreign exchange instruments
(1
)
 
(2
)
 

 
Revenues: Energy-Related Businesses
Commodity contracts not subject to rate recovery

 
9

 
(6
)
 
Revenues: Energy-Related Businesses
Total before income tax
13

 
23

 
33

 
 
 
(4
)
 
(6
)
 
(6
)
 
Income Tax Expense
Net of income tax
9

 
17

 
27

 
 
 
(6
)
 
(10
)
 
(15
)
 
Earnings Attributable to Noncontrolling
Interests
 
$
3

 
$
7


$
12

 
 
Pension and other postretirement benefits:
 

 
 

 
 
 
 
Amortization of actuarial loss(2)
$
12

 
$
10

 
$
10

 
Other Income, Net
Amortization of prior service cost(2)
2

 
1

 
1

 
Other Income, Net
Settlements(2)
12

 
8

 

 
Other Income, Net
Total before income tax
26

 
19

 
11

 
 
 
(8
)
 
(7
)
 
(5
)
 
Income Tax Expense
Net of income tax
$
18

 
$
12


$
6

 
 
 
 
 
 
 
 
 
 
Total reclassifications for the period, net of tax
$
21

 
$
19

 
$
18


 
SDG&E:
 

 
 

 
 

 
 
Financial instruments:
 

 
 

 
 

 
 
Interest rate instruments(1)
$
7

 
$
13

 
$
12

 
Interest Expense
 
(7
)
 
(13
)
 
(12
)
 
(Earnings) Losses Attributable to
Noncontrolling Interest
 
$

 
$


$

 
 
Pension and other postretirement benefits:
 

 
 

 
 

 
 
Amortization of actuarial loss(2)
$
1

 
$
1

 
$
1

 
Other Income, Net
Settlements(2)
4

 

 

 
Other Income, Net
Total before income tax
5

 
1

 
1

 
 
 
(1
)
 

 

 
Income Tax Expense
Net of income tax
$
4

 
$
1


$
1

 
 
 
 
 
 
 
 
 
 
Total reclassifications for the period, net of tax
$
4

 
$
1


$
1


 
SoCalGas:
 

 
 

 
 

 
 
Financial instruments:
 

 
 

 
 

 
 
Interest rate instruments
$
1

 
$

 
$
1

 
Interest Expense
Pension and other postretirement benefits:
 

 
 

 
 

 
 
Amortization of prior service cost(2)
$
1

 
$
1

 
$

 
Other Income, Net
 
 
 
 
 
 
 
 
Total reclassifications for the period, net of tax
$
2

 
$
1


$
1


 
(1) 
Amounts include Otay Mesa VIE. All of SDG&E’s interest rate derivative activity relates to Otay Mesa VIE.
(2) 
Amounts are included in the computation of net periodic benefit cost (see “Net Periodic Benefit Cost” in Note 9).
Schedule Of Noncontrolling Interests The following table provides information about noncontrolling ownership interests held by others (not including preferred shareholders) recorded in Other Noncontrolling Interests in Total Equity on Sempra Energy’s Consolidated Balance Sheets:
OTHER NONCONTROLLING INTERESTS
 
 
(Dollars in millions)
 
 
 
Percent ownership held by noncontrolling interests
 
 Equity (deficit) held by
noncontrolling interests
 
December 31,
 
December 31,
 
2018
 
2017
 
2018
 
2017
SDG&E:
 
 
 
 
 
 
 
Otay Mesa VIE
100
%
 
100
%
 
$
100

 
$
28

Sempra South American Utilities:
 

 
 

 
 

 
 

Chilquinta Energía subsidiaries(1)
19.7 - 43.4

 
22.9 - 43.4

 
23

 
24

Luz del Sur
16.4

 
16.4

 
193

 
189

Tecsur
9.8

 
9.8

 
4

 
4

Sempra Mexico:
 

 
 

 
 

 
 

IEnova(2)(3)
33.5

 
33.6

 
1,605

 
1,532

Sempra Renewables:
 
 
 
 
 
 
 
Tax equity arrangements – wind(4)
               NA

 
               NA

 
158

 
181

Tax equity arrangements – solar(4)

 
               NA

 

 
450

PXiSE Energy Solutions, LLC
11.1

 

 
1

 

Sempra LNG & Midstream:
 

 
 

 
 

 
 

Bay Gas
9.1

 
9.1

 
18

 
28

Liberty Gas Storage, LLC
24.6

 
24.6

 
(12
)
 
14

Total Sempra Energy
 

 
 

 
$
2,090

 
$
2,450

(1) 
Chilquinta Energía has four subsidiaries with NCI held by others. Percentage range reflects the highest and lowest ownership percentages among these subsidiaries.
(2) 
IEnova has a subsidiary with a 10-percent NCI held by others. The equity held by NCI is negligible at both December 31, 2018 and 2017.
(3) 
IEnova has a subsidiary with a 49-percent NCI held by others. The equity held by NCI is $13 million at December 31, 2018.
(4) 
Net income or loss attributable to NCI is computed using the HLBV method and is not based on ownership percentages.
Schedule of Related Party Transactions We summarize amounts due from and to unconsolidated affiliates at Sempra Energy Consolidated, SDG&E and SoCalGas in the following table.
AMOUNTS DUE FROM (TO) UNCONSOLIDATED AFFILIATES
(Dollars in millions)
 
December 31,
 
2018
 
2017
Sempra Energy Consolidated:
 
 
 
Total due from various unconsolidated affiliates – current
$
39

 
$
37

 
 
 
 
Sempra South American Utilities(1):
 

 
 

Eletrans – 4% Note(2)
$
43

 
$
103

Other related party receivables
1

 
1

Sempra Mexico(1):
 

 
 

IMG – Note due March 15, 2022(3)
641

 
487

Energía Sierra Juárez – Note(4)
3

 
7

Total due from unconsolidated affiliates – noncurrent
$
688

 
$
598

 
 
 
 
Total due to various unconsolidated affiliates – current
$
(10
)
 
$
(7
)
 
 
 
 
Sempra Mexico(1):
 
 
 
Total due to unconsolidated affiliates – noncurrent – TAG – Note due December 20, 2021(5)
$
(37
)
 
$
(35
)
SDG&E:
 

 
 

Sempra Energy
$
(43
)
 
$
(30
)
SoCalGas
(6
)
 
(4
)
Various affiliates
(12
)
 
(6
)
Total due to unconsolidated affiliates – current
$
(61
)
 
$
(40
)
 
 
 
 
Income taxes due from Sempra Energy(6)
$
5

 
$
27

SoCalGas:
 

 
 

SDG&E
$
6

 
$
4

Various affiliates
1

 

Total due from unconsolidated affiliates – current
$
7

 
$
4

 
 
 
 
Total due to unconsolidated affiliates – current – Sempra Energy
$
(34
)
 
$
(35
)
 
 
 
 
Income taxes due (to) from Sempra Energy(6)
$
(4
)
 
$
10

(1) 
Amounts include principal balances plus accumulated interest outstanding.
(2) 
U.S. dollar-denominated loan, at a fixed interest rate with no stated maturity date, to provide project financing for the construction of transmission lines at Eletrans, comprising JVs of Chilquinta Energía.
(3) 
Mexican peso-denominated revolving line of credit for up to 14.2 billion Mexican pesos or approximately $721 million U.S. dollar-equivalent, at a variable interest rate based on the 91-day Interbank Equilibrium Interest Rate plus 220 bps (10.84 percent at December 31, 2018), to finance construction of the natural gas marine pipeline.
(4) 
U.S. dollar-denominated loan, at a variable interest rate based on the 30-day LIBOR plus 637.5 bps (8.89 percent at December 31, 2018) with no stated maturity date, to finance the first phase of the Energía Sierra Juárez wind project, which is a joint venture of IEnova.
(5) 
U.S. dollar-denominated loan, at a variable interest rate based on 6-month LIBOR plus 290 bps (5.77 percent at December 31, 2018).
(6) 
SDG&E and SoCalGas are included in the consolidated income tax return of Sempra Energy and are allocated income tax expense from Sempra Energy in an amount equal to that which would result from each company having always filed a separate return.

The following table summarizes revenues and cost of sales from unconsolidated affiliates.
REVENUES AND COST OF SALES FROM UNCONSOLIDATED AFFILIATES
(Dollars in millions)
 
Years ended December 31,
 
2018
 
2017
 
2016
Revenues:
 
 
 
 
 
Sempra Energy Consolidated
$
64

 
$
43

 
$
25

SDG&E
5

 
8

 
7

SoCalGas
64

 
74

 
76

Cost of Sales:
 
 
 
 
 
Sempra Energy Consolidated
$
46

 
$
47

 
$
72

SDG&E
73

 
71

 
64

Schedule Of Other Income (Expense) Other Income, Net on the Consolidated Statements of Operations consists of the following:
OTHER INCOME, NET
(Dollars in millions)
 
Years ended December 31,
 
2018
 
2017(1)
 
2016(1)
Sempra Energy Consolidated:
 
 
 
 
 
Allowance for equity funds used during construction
$
98

 
$
168

 
$
116

Investment (losses) gains(2)
(6
)
 
56

 
23

Gains (losses) on interest rate and foreign exchange instruments, net
7

 
47

 
(32
)
Foreign currency transaction losses(3)
(5
)
 
(35
)
 
(1
)
Non-service component of net periodic benefit (cost) credit
(37
)
 
(21
)
 
6

Electrical infrastructure relocation income
7

 
3

 
10

Interest on regulatory balancing accounts, net
2

 
3

 
4

Sundry, net
6

 
12

 
12

Total
$
72

 
$
233

 
$
138

SDG&E:
 

 
 

 
 

Allowance for equity funds used during construction
$
61

 
$
63

 
$
46

Non-service component of net periodic benefit (cost) credit
(6
)
 
4

 
14

Interest on regulatory balancing accounts, net
4

 
3

 
3

Sundry, net
(3
)
 

 
1

Total
$
56

 
$
70

 
$
64

SoCalGas:
 

 
 

 
 

Allowance for equity funds used during construction
$
36

 
$
44

 
$
40

Non-service component of net periodic benefit (cost) credit
(10
)
 
(5
)
 
6

Interest on regulatory balancing accounts, net
(2
)
 

 
1

Sundry, net
(9
)
 
(8
)
 
(9
)
Total
$
15

 
$
31

 
$
38

(1) 
As adjusted for the retrospective adoption of ASU 2017-07, which we discuss in Note 2.
(2) 
Represents investment (losses) gains on dedicated assets in support of our executive retirement and deferred compensation plans. These amounts are partially offset by corresponding changes in compensation expense related to the plans, recorded in O&M on the Consolidated Statements of Operations.
(3) 
Includes losses of $3 million and $35 million in 2018 and 2017, respectively, from translation to U.S. dollars of a Mexican peso-denominated loan to the IMG JV, which are offset by corresponding amounts included in Equity Earnings on the Consolidated Statements of Operations.