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Segment Information
 3 Months Ended
Mar. 31, 2019
Segment Reporting Information [Line Items]  
Segment Reporting Disclosure [Text Block]
Segment Information

The Company's reportable segments with foreign operations include Northern Powergrid, whose business is principally in the United Kingdom, BHE Transmission, whose business includes operations in Canada, and BHE Renewables, whose business includes operations in the Philippines. Intersegment eliminations and adjustments, including the allocation of goodwill, have been made. Information related to the Company's reportable segments is shown below (in millions):
 
Three-Month Periods
 
Ended March 31,
 
2019
 
2018
Operating revenue:
 
 
 
PacifiCorp
$
1,259

 
$
1,184

MidAmerican Funding
842

 
747

NV Energy
614

 
617

Northern Powergrid
263

 
278

BHE Pipeline Group
371

 
376

BHE Transmission
168

 
180

BHE Renewables
167

 
154

HomeServices
785

 
761

BHE and Other(1)
141

 
143

Total operating revenue
$
4,610

 
$
4,440

 
Three-Month Periods
 
Ended March 31,
 
2019
 
2018
Depreciation and amortization:
 
 
 
PacifiCorp
$
205

 
$
202

MidAmerican Funding
177

 
158

NV Energy
120

 
113

Northern Powergrid
63

 
63

BHE Pipeline Group
28

 
42

BHE Transmission
58

 
62

BHE Renewables
70

 
64

HomeServices
13

 
12

BHE and Other(1)
(1
)
 
—

Total depreciation and amortization
$
733

 
$
716


Operating income:
 
 
 
PacifiCorp
$
284

 
$
247

MidAmerican Funding
116

 
79

NV Energy
84

 
89

Northern Powergrid
129

 
147

BHE Pipeline Group
243

 
226

BHE Transmission
76

 
81

BHE Renewables
18

 
28

HomeServices
(21
)
 
(8
)
BHE and Other(1)
(10
)
 
(18
)
Total operating income
919


871

Interest expense
(477
)
 
(466
)
Capitalized interest
16

 
12

Allowance for equity funds
32

 
21

Interest and dividend income
30

 
26

Losses on marketable securities, net
(68
)
 
(209
)
Other, net
35

 
30

Total income before income tax expense and equity income
$
487


$
285

Interest expense:
 
 
 
PacifiCorp
$
96

 
$
96

MidAmerican Funding
75

 
63

NV Energy
62

 
58

Northern Powergrid
34

 
37

BHE Pipeline Group
12

 
10

BHE Transmission
39

 
43

BHE Renewables
44

 
52

HomeServices
7

 
4

BHE and Other(1)
108

 
103

Total interest expense
$
477

 
$
466

 
Three-Month Periods
 
Ended March 31,
 
2019
 
2018
Operating revenue by country:
 
 
 
United States
$
4,177

 
$
3,978

United Kingdom
263

 
277

Canada
168

 
180

Philippines and other
2

 
5

Total operating revenue by country
$
4,610

 
$
4,440

Income before income tax expense and equity income by country:
 
 
 
United States
$
336

 
$
118

United Kingdom
103

 
112

Canada
40

 
41

Philippines and other
8

 
14

Total income before income tax expense and equity income by country
$
487

 
$
285


 
As of
 
March 31,
 
December 31,
 
2019
 
2018
Assets:
 
 
 
PacifiCorp
$
24,211

 
$
23,478

MidAmerican Funding
20,845

 
20,029

NV Energy
14,105

 
14,119

Northern Powergrid
7,626

 
7,427

BHE Pipeline Group
5,579

 
5,511

BHE Transmission
8,567

 
8,424

BHE Renewables
8,654

 
8,666

HomeServices
3,427

 
2,797

BHE and Other(1)
1,531

 
1,738

Total assets
$
94,545

 
$
92,189


(1)
The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate principally to other entities, corporate functions and intersegment eliminations.

The following table shows the change in the carrying amount of goodwill by reportable segment for the three-month period ended March 31, 2019 (in millions):
 
 
 
 
 
 
 
 
 
BHE Pipeline Group
 
 
 
 
 
 
 
 
 
PacifiCorp
 
MidAmerican Funding
 
NV Energy
 
Northern Powergrid
 
 
BHE Transmission
 
BHE Renewables
 
HomeServices
 
 
 
 
 
 
 
 
 
 
 
Total
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
December 31, 2018
$
1,129

 
$
2,102

 
$
2,369

 
$
952

 
$
73

 
$
1,448

 
$
95

 
$
1,427

 
$
9,595

Acquisitions
—

 
—

 
—

 
—

 
—

 
—

 
—

 
23

 
23

Foreign currency translation
—

 
—

 
—

 
14

 
—

 
31

 
—

 
—

 
45

March 31, 2019
$
1,129

 
$
2,102

 
$
2,369

 
$
966

 
$
73

 
$
1,479

 
$
95

 
$
1,450

 
$
9,663
MidAmerican Energy Company [Member]  
Segment Reporting Information [Line Items]  
Segment Reporting Disclosure [Text Block]
Segment Information

MidAmerican Energy has identified two reportable segments: regulated electric and regulated natural gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost.

The following tables provide information on a reportable segment basis (in millions):
 
Three-Month Periods
 
Ended March 31,
 
2019
 
2018
Operating revenue:
 
 
 
Regulated electric
$
542

 
$
469

Regulated natural gas
295

 
275

Other
5

 
2

Total operating revenue
$
842

 
$
746

 
 
 
 
Operating income:
 
 
 
Regulated electric
$
66

 
$
36

Regulated natural gas
48

 
43

Other
1

 
—

Total operating income
115

 
79

Interest expense
(69
)
 
(58
)
Allowance for borrowed funds
6

 
4

Allowance for equity funds
15

 
10

Other, net
20

 
9

Income before income tax benefit
$
87

 
$
44


 
As of
 
March 31,
2019
 
December 31,
2018
Assets:
 
 
 
Regulated electric
$
17,373

 
$
16,511

Regulated natural gas
1,357

 
1,406

Other
2

 
3

Total assets
$
18,732

 
$
17,920
MidAmerican Funding, LLC and Subsidiaries [Domain]  
Segment Reporting Information [Line Items]  
Segment Reporting Disclosure [Text Block]
Segment Information

MidAmerican Funding has identified two reportable segments: regulated electric and regulated natural gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance. Common operating costs, interest income, interest expense and income tax expense are allocated to each segment based on certain factors, which primarily relate to the nature of the cost. "Other" in the tables below consists of the financial results and assets of nonregulated operations, MHC and MidAmerican Funding.

The following tables provide information on a reportable segment basis (in millions):
 
Three-Month Periods
 
Ended March 31,
 
2019
 
2018
Operating revenue:
 
 
 
Regulated electric
$
542

 
$
469

Regulated natural gas
295

 
275

Other
5

 
3

Total operating revenue
$
842

 
$
747

 
 
 
 
Operating income:
 
 
 
Regulated electric
$
66

 
$
36

Regulated natural gas
48

 
43

Other
2

 
—

Total operating income
116

 
79

Interest expense
(75
)
 
(63
)
Allowance for borrowed funds
6

 
4

Allowance for equity funds
15

 
10

Other, net
21

 
10

Income before income tax benefit
$
83

 
$
40


 
As of
 
March 31,
2019
 
December 31,
2018
Assets(1):
 
 
 
Regulated electric
$
18,564

 
$
17,702

Regulated natural gas
1,436

 
1,485

Other
17

 
15

Total assets
$
20,017

 
$
19,202

(1)
Assets by reportable segment reflect the assignment of goodwill to applicable reporting units.
Sierra Pacific Power Company [Member]  
Segment Reporting Information [Line Items]  
Segment Reporting Disclosure [Text Block]
Segment Information

Sierra Pacific has identified two reportable operating segments: regulated electric and regulated natural gas. The regulated electric segment derives most of its revenue from regulated retail sales of electricity to residential, commercial, and industrial customers and from wholesale sales. The regulated natural gas segment derives most of its revenue from regulated retail sales of natural gas to residential, commercial, and industrial customers and also obtains revenue by transporting natural gas owned by others through its distribution system. Pricing for regulated electric and regulated natural gas sales are established separately by the PUCN; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and in evaluating performance.

The following tables provide information on a reportable segment basis (in millions):
 
Three-Month Periods
 
Ended March 31,
 
2019
 
2018
Operating revenue:
 
 
 
Regulated electric
$
182

 
$
181

Regulated natural gas
37

 
41

Total operating revenue
$
219

 
$
222

 
 
 
 
Operating income:
 
 
 
Regulated electric
$
29

 
$
37

Regulated natural gas
8

 
10

Total operating income
37

 
47

Interest expense
(12
)
 
(10
)
Allowance for equity funds
1

 
1

Other, net
2

 
2

Income before income tax expense
$
28

 
$
40


 
As of
 
March 31,
 
December 31,
 
2019
 
2018
Assets:
 
 
 
Regulated electric
$
3,227

 
$
3,177

Regulated natural gas
316

 
314

Regulated common assets(1)
74

 
78

Total assets
$
3,617

 
$
3,569


(1)
Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.