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Segment Information
 3 Months Ended
Mar. 31, 2023
Segment Reporting Information [Line Items]  
Segment Information Segment Information
The Company's reportable segments with foreign operations include Northern Powergrid, whose business is principally in the United Kingdom, and BHE Transmission, whose business includes operations in Canada. Intersegment eliminations and adjustments, including the allocation of goodwill, have been made. Effective January 1, 2023, the Company's unregulated retail energy services business was transferred to a subsidiary of BHE Renewables. Prior period amounts, which were previously reported in BHE and Other, have been changed to reflect this activity in BHE Renewables. Information related to the Company's reportable segments is shown below (in millions):
 Three-Month Periods
Ended March 31,
 20232022
Operating revenue:
PacifiCorp$1,484 $1,297 
MidAmerican Funding920 1,005 
NV Energy999 693 
Northern Powergrid354 315 
BHE Pipeline Group1,173 1,035 
BHE Transmission205 183 
BHE Renewables393 336 
HomeServices875 1,207 
BHE and Other(1)
(57)(41)
Total operating revenue$6,346 $6,030 
Depreciation and amortization:
PacifiCorp$279 $280 
MidAmerican Funding234 250 
NV Energy152 140 
Northern Powergrid85 80 
BHE Pipeline Group172 131 
BHE Transmission61 58 
BHE Renewables66 66 
HomeServices13 15 
BHE and Other(1)
1 2 
Total depreciation and amortization$1,063 $1,022 
 Three-Month Periods
Ended March 31,
 20232022
Operating income:
PacifiCorp$(167)$216 
MidAmerican Funding88 100 
NV Energy57 62 
Northern Powergrid146 159 
BHE Pipeline Group584 538 
BHE Transmission88 83 
BHE Renewables(69)54 
HomeServices(45)28 
BHE and Other(1)
(15)(4)
Total operating income667 1,236 
Interest expense(586)(532)
Capitalized interest24 17 
Allowance for equity funds49 38 
Interest and dividend income86 23 
Gains (losses) on marketable securities, net699 (1,257)
Other, net40 5 
Total income (loss) before income tax expense (benefit) and equity income (loss)$979 $(470)
Interest expense:
PacifiCorp$124 $106 
MidAmerican Funding84 82 
NV Energy63 51 
Northern Powergrid30 32 
BHE Pipeline Group39 37 
BHE Transmission37 38 
BHE Renewables45 42 
HomeServices4 1 
BHE and Other(1)
160 143 
Total interest expense$586 $532 
Earnings (loss) on common shares:
PacifiCorp$(120)$130 
MidAmerican Funding249 241 
NV Energy34 29 
Northern Powergrid11 111 
BHE Pipeline Group369 322 
BHE Transmission64 62 
BHE Renewables79 145 
HomeServices(34)21 
BHE and Other(1)
329 (1,206)
Total earnings (loss) on common shares$981 $(145)
 As of
 March 31,December 31,
20232022
Assets:
PacifiCorp$30,268 $30,559 
MidAmerican Funding25,899 26,077 
NV Energy17,210 16,676 
Northern Powergrid9,216 9,005 
BHE Pipeline Group20,931 21,005 
BHE Transmission9,380 9,334 
BHE Renewables11,693 12,632 
HomeServices3,625 3,436 
BHE and Other(1)
6,232 5,116 
Total assets$134,454 $133,840 

(1)The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate principally to other corporate entities, corporate functions and intersegment eliminations.
 Three-Month Periods
Ended March 31,
 20232022
Operating revenue by country:
U.S.$5,815 $5,534 
United Kingdom333 315 
Canada177 181 
Australia21 — 
Total operating revenue by country$6,346 $6,030 
Income (loss) before income tax expense (benefit) and equity income (loss) by country:
U.S.$819 $(654)
United Kingdom113 139 
Canada43 46 
Australia5 — 
Other(1)(1)
Total income (loss) before income tax expense (benefit) and equity income (loss) by country$979 $(470)

The following table shows the change in the carrying amount of goodwill by reportable segment for the three-month period ended March 31, 2023 (in millions):
BHE Pipeline Group
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE TransmissionBHE RenewablesHomeServices
Total
 
December 31, 2022$1,129 $2,102 $2,369 $917 $1,814 $1,461 $95 $1,602 $11,489 
Foreign currency translation
— — — 13 — 1 — — 14 
March 31, 2023$1,129 $2,102 $2,369 $930 $1,814 $1,462 $95 $1,602 $11,503 
MEC  
Segment Reporting Information [Line Items]  
Segment Information 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 natural gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and 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,
20232022
Operating revenue:
Regulated electric$591 $608 
Regulated natural gas326 396 
Other3 1 
Total operating revenue$920 $1,005 
Operating income:
Regulated electric$50 $51 
Regulated natural gas38 49 
Total operating income88 100 
Interest expense(80)(78)
Allowance for borrowed funds4 4 
Allowance for equity funds11 15 
Other, net16 (3)
Total income before income tax expense (benefit)$39 $38 

As of
March 31,
2023		December 31,
2022
Assets:
Regulated electric$22,091 $22,092 
Regulated natural gas1,716 1,885 
Other— 1 
Total assets$23,807 $23,978 
MidAmerican Funding, LLC  
Segment Reporting Information [Line Items]  
Segment Information 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 natural gas sales are established separately by regulatory agencies; therefore, management also reviews each segment separately to make decisions regarding allocation of resources and 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,
20232022
Operating revenue:
Regulated electric$591 $608 
Regulated natural gas326 396 
Other3 1 
Total operating revenue$920 $1,005 
Operating income:
Regulated electric$50 $51 
Regulated natural gas38 49 
Total operating income88 100 
Interest expense(84)(82)
Allowance for borrowed funds4 4 
Allowance for equity funds11 15 
Other, net28 (4)
Total income before income tax expense (benefit)$47 $33 
As of
March 31,
2023		December 31,
2022
Assets(1):
Regulated electric$23,282 $23,283 
Regulated natural gas1,795 1,963 
Other10 8 
Total assets$25,087 $25,254 
(1)Assets by reportable segment reflect the assignment of goodwill to applicable reporting units.
SPPC  
Segment Reporting Information [Line Items]  
Segment Information 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,
20232022
Operating revenue:
Regulated electric$304 $227 
Regulated natural gas96 52 
Total operating revenue$400 $279 
Operating income:
Regulated electric$25 $30 
Regulated natural gas10 8 
Total operating income35 38 
Interest expense(16)(13)
Allowance for borrowed funds2 1 
Allowance for equity funds2 2 
Interest and dividend income7 3 
Other, net1 2 
Total income before income tax expense (benefit)$31 $33 

As of
March 31,December 31,
20232022
Assets:
Regulated electric$4,193 $4,224 
Regulated natural gas460 441 
Other(1)
30 67 
Total assets$4,683 $4,732 

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