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Segment Information
 6 Months Ended
Jun. 30, 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
 
Six-Month Periods
 
Ended June 30,
 
Ended June 30,
 
2019
 
2018
 
2019
 
2018
Operating revenue:
 
 
 
 
 
 
 
PacifiCorp
$
1,167

 
$
1,193

 
$
2,426

 
$
2,377

MidAmerican Funding
660

 
718

 
1,502

 
1,465

NV Energy
721

 
750

 
1,335

 
1,367

Northern Powergrid
243

 
246

 
506

 
524

BHE Pipeline Group
212

 
236

 
583

 
612

BHE Transmission
175

 
177

 
343

 
357

BHE Renewables
249

 
246

 
416

 
400

HomeServices
1,327

 
1,273

 
2,112

 
2,034

BHE and Other(1)
140

 
154

 
281

 
297

Total operating revenue
$
4,894

 
$
4,993

 
$
9,504

 
$
9,433

Depreciation and amortization:
 
 
 
 
 
 
 
PacifiCorp
$
209

 
$
197

 
$
414

 
$
399

MidAmerican Funding
179

 
208

 
356

 
366

NV Energy
120

 
114

 
240

 
227

Northern Powergrid
63

 
64

 
126

 
127

BHE Pipeline Group
29

 
30

 
57

 
72

BHE Transmission
60

 
61

 
118

 
123

BHE Renewables
69

 
66

 
139

 
130

HomeServices
11

 
11

 
24

 
23

BHE and Other(1)
(1
)
 
(1
)
 
(2
)
 
(1
)
Total depreciation and amortization
$
739

 
$
750

 
$
1,472

 
$
1,466


 
Three-Month Periods
 
Six-Month Periods
 
Ended June 30,
 
Ended June 30,
 
2019
 
2018
 
2019
 
2018
Operating income:
 
 
 
 
 
 
 
PacifiCorp
$
268

 
$
284

 
$
552

 
$
531

MidAmerican Funding
94

 
87

 
210

 
166

NV Energy
150

 
144

 
234

 
233

Northern Powergrid
110

 
111

 
239

 
258

BHE Pipeline Group
68

 
57

 
311

 
283

BHE Transmission
77

 
81

 
153

 
162

BHE Renewables
97

 
104

 
115

 
132

HomeServices
117

 
108

 
96

 
100

BHE and Other(1)
(22
)
 
(4
)
 
(32
)
 
(22
)
Total operating income
959


972

 
1,878


1,843

Interest expense
(476
)
 
(461
)
 
(953
)
 
(927
)
Capitalized interest
17

 
15

 
33

 
27

Allowance for equity funds
38

 
24

 
70

 
45

Interest and dividend income
36

 
32

 
66

 
58

Gains (losses) on marketable securities, net
6

 
(387
)
 
(62
)
 
(596
)
Other, net
30

 
1

 
65

 
31

Total income before income tax expense and equity income
$
610


$
196

 
$
1,097


$
481

Interest expense:
 
 
 
 
 
 
 
PacifiCorp
$
102

 
$
96

 
$
198

 
$
192

MidAmerican Funding
74

 
61

 
149

 
124

NV Energy
56

 
59

 
118

 
117

Northern Powergrid
35

 
36

 
69

 
73

BHE Pipeline Group
12

 
10

 
24

 
20

BHE Transmission
39

 
42

 
78

 
85

BHE Renewables
44

 
49

 
88

 
101

HomeServices
7

 
6

 
14

 
10

BHE and Other(1)
107

 
102

 
215

 
205

Total interest expense
$
476

 
$
461

 
$
953


$
927

Operating revenue by country:
 
 
 
 
 
 
 
United States
$
4,476

 
$
4,570

 
$
8,653

 
$
8,548

United Kingdom
242

 
245

 
505

 
522

Canada
175

 
177

 
343

 
357

Philippines and other
1

 
1

 
3

 
6

Total operating revenue by country
$
4,894

 
$
4,993

 
$
9,504

 
$
9,433

Income before income tax benefit and equity income (loss) by country:
 
 
 
 
 
 
 
United States
$
482

 
$
93

 
$
818

 
$
211

United Kingdom
76

 
49

 
179

 
161

Canada
39

 
41

 
79

 
82

Philippines and other
13

 
13

 
21

 
27

Total income before income tax benefit and equity income (loss) by country
$
610

 
$
196

 
$
1,097

 
$
481


 
As of
 
June 30,
 
December 31,
 
2019
 
2018
Assets:
 
 
 
PacifiCorp
$
24,528

 
$
23,478

MidAmerican Funding
21,140

 
20,029

NV Energy
14,189

 
14,119

Northern Powergrid
7,587

 
7,427

BHE Pipeline Group
5,627

 
5,511

BHE Transmission
8,720

 
8,424

BHE Renewables
8,942

 
8,666

HomeServices
4,056

 
2,797

BHE and Other(1)
1,353

 
1,738

Total assets
$
96,142

 
$
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 six-month period ended June 30, 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
—

 
—

 
—

 
(3
)
 
—

 
60

 
—

 
—

 
57

June 30, 2019
$
1,129

 
$
2,102

 
$
2,369

 
$
949

 
$
73

 
$
1,508

 
$
95

 
$
1,450

 
$
9,675
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
 
Six-Month Periods
 
Ended June 30,
 
Ended June 30,
 
2019
 
2018
 
2019
 
2018
Operating revenue:
 
 
 
 
 
 
 
Regulated electric
$
538

 
$
589

 
$
1,080

 
$
1,058

Regulated natural gas
111

 
127

 
406

 
402

Other
10

 
1

 
15

 
3

Total operating revenue
$
659

 
$
717

 
$
1,501

 
$
1,463

 
 
 
 
 
 
 
 
Operating income:
 
 
 
 
 
 
 
Regulated electric
$
87

 
$
78

 
$
153

 
$
114

Regulated natural gas
5

 
8

 
53

 
51

Other
2

 
1

 
3

 
1

Total operating income
94

 
87

 
209

 
166

Interest expense
(70
)
 
(56
)
 
(139
)
 
(114
)
Allowance for borrowed funds
7

 
4

 
13

 
8

Allowance for equity funds
17

 
13

 
32

 
23

Other, net
10

 
12

 
30

 
21

Income before income tax benefit
$
58

 
$
60

 
$
145

 
$
104


 
As of
 
June 30,
2019
 
December 31,
2018
Assets:
 
 
 
Regulated electric
$
17,735

 
$
16,511

Regulated natural gas
1,289

 
1,406

Other
3

 
3

Total assets
$
19,027

 
$
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
 
Six-Month Periods
 
Ended June 30,
 
Ended June 30,
 
2019
 
2018
 
2019
 
2018
Operating revenue:
 
 
 
 
 
 
 
Regulated electric
$
538

 
$
589

 
$
1,080

 
$
1,058

Regulated natural gas
111

 
127

 
406

 
402

Other
11

 
2

 
16

 
5

Total operating revenue
$
660

 
$
718

 
$
1,502

 
$
1,465

 
 
 
 
 
 
 
 
Operating income:
 
 
 
 
 
 
 
Regulated electric
$
87

 
$
78

 
$
153

 
$
114

Regulated natural gas
5

 
8

 
53

 
51

Other
2

 
1

 
4

 
1

Total operating income
94

 
87

 
210

 
166

Interest expense
(74
)
 
(61
)
 
(149
)
 
(124
)
Allowance for borrowed funds
7

 
4

 
13

 
8

Allowance for equity funds
17

 
13

 
32

 
23

Other, net
10

 
13

 
31

 
23

Income before income tax benefit
$
54

 
$
56

 
$
137

 
$
96


 
As of
 
June 30,
2019
 
December 31,
2018
Assets(1):
 
 
 
Regulated electric
$
18,926

 
$
17,702

Regulated natural gas
1,368

 
1,485

Other
19

 
15

Total assets
$
20,313

 
$
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]

 
As of
 
June 30,
 
December 31,
 
2019
 
2018
Assets:
 
 
 
Regulated electric
$
3,237

 
$
3,177

Regulated natural gas
316

 
314

Regulated common assets(1)
41

 
78

Total assets
$
3,594

 
$
3,569


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