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Segment Information (Tables)
 6 Months Ended
Jun. 30, 2021
Segment Reporting Information [Line Items]  
Schedule of Segment Reporting Information by Segment
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 PeriodsSix-Month Periods
Ended June 30,Ended June 30,
 2021202020212020
Operating revenue:
PacifiCorp$1,298 $1,144 $2,540 $2,350 
MidAmerican Funding693 616 1,760 1,302 
NV Energy767 695 1,358 1,317 
Northern Powergrid280 221 580 487 
BHE Pipeline Group706 225 1,799 626 
BHE Transmission182 169 362 341 
BHE Renewables267 244 457 422 
HomeServices1,763 1,193 2,995 2,086 
BHE and Other(1)
108 105 294 208 
Total operating revenue$6,064 $4,612 $12,145 $9,139 
Depreciation and amortization:
PacifiCorp$275 $210 $539 $462 
MidAmerican Funding209 175 416 351 
NV Energy137 125 273 249 
Northern Powergrid73 63 144 126 
BHE Pipeline Group121 25 239 89 
BHE Transmission60 55 118 115 
BHE Renewables61 71 121 142 
HomeServices12 12 23 23 
BHE and Other(1)
(1)— 1 — 
Total depreciation and amortization$947 $736 $1,874 $1,557 
 Three-Month PeriodsSix-Month Periods
Ended June 30,Ended June 30,
 2021202020212020
Operating income:  
PacifiCorp$283 $256 $517 $490 
MidAmerican Funding103 110 151 212 
NV Energy145 161 215 240 
Northern Powergrid126 89 277 221 
BHE Pipeline Group245 92 863 341 
BHE Transmission85 81 166 157 
BHE Renewables97 84 130 101 
HomeServices179 77 291 97 
BHE and Other(1)
(55)(14)(69)(4)
Total operating income1,208 936 2,541 1,855 
Interest expense(532)(503)(1,062)(986)
Capitalized interest14 19 28 36 
Allowance for equity funds30 38 56 72 
Interest and dividend income26 20 47 40 
Gains on marketable securities, net1,966 583 848 610 
Other, net48 52 56 25 
Total income before income tax expense (benefit) and equity loss$2,760 $1,145 $2,514 $1,652 
Interest expense:
PacifiCorp$105 $110 $212 $212 
MidAmerican Funding78 78 156 159 
NV Energy51 57 103 115 
Northern Powergrid32 31 65 63 
BHE Pipeline Group40 15 78 29 
BHE Transmission40 35 78 73 
BHE Renewables40 42 80 84 
HomeServices1 3 2 8 
BHE and Other(1)
145 132 288 243 
Total interest expense$532 $503 $1,062 $986 
Earnings on common shares:
PacifiCorp$226 $167 $395 $343 
MidAmerican Funding211 208 355 358 
NV Energy100 98 134 118 
Northern Powergrid(25)59 79 146 
BHE Pipeline Group100 64 483 243 
BHE Transmission60 60 119 115 
BHE Renewables181 138 197 233 
HomeServices135 59 219 69 
BHE and Other1,256 263 229 161 
Earnings on common shares$2,244 $1,116 $2,210 $1,786 
 As of
 June 30,December 31,
20212020
Assets:
PacifiCorp$27,235 $26,862 
MidAmerican Funding24,156 23,530 
NV Energy14,839 14,501 
Northern Powergrid9,071 8,782 
BHE Pipeline Group19,739 19,541 
BHE Transmission9,516 9,208 
BHE Renewables11,754 12,004 
HomeServices5,410 4,955 
BHE and Other(1)
8,841 7,933 
Total assets$130,561 $127,316 

(1)The differences between the reportable segment amounts and the consolidated amounts, described as BHE and Other, relate principally to other entities, including MidAmerican Energy Services, LLC, corporate functions and intersegment eliminations.
Disaggregation of Revenue
The following table summarizes the Company's energy products and services revenue from contracts with customers ("Customer Revenue") by regulated and nonregulated, with further disaggregation of regulated by line of business, including a reconciliation to the Company's reportable segment information included in Note 13 (in millions):
For the Three-Month Period Ended June 30, 2021
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail electric$1,188 $516 $708 $— $— $— $— $(1)$2,411 
Retail gas— 89 20 — — — — — 109 
Wholesale30 69 10 — — — — (1)108 
Transmission and
   distribution		37 15 22 243 — 178 — — 495 
Interstate pipeline— — — — 458 — — (25)433 
Other31 — 1 — (1)— — — 31 
Total Regulated1,286 689 761 243 457 178 — (27)3,587 
Nonregulated— 1 1 8 232 7 239 124 612 
Total Customer Revenue1,286 690 762 251 689 185 239 97 4,199 
Other revenue12 3 5 29 17 (3)28 11 102 
Total$1,298 $693 $767 $280 $706 $182 $267 $108 $4,301 
For the Six-Month Period Ended June 30, 2021
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail electric$2,333 $968 $1,219 $— $— $— $— $(1)$4,519 
Retail gas— 549 58 — — — — — 607 
Wholesale66 194 25 — 17 — — (1)301 
Transmission and
   distribution		62 30 43 506 — 350 — — 991 
Interstate pipeline— — — — 1,273 — — (66)1,207 
Other54 — 1 — 1 — — — 56 
Total Regulated2,515 1,741 1,346 506 1,291 350 — (68)7,681 
Nonregulated— 11 1 18 469 15 405 311 1,230 
Total Customer Revenue2,515 1,752 1,347 524 1,760 365 405 243 8,911 
Other revenue25 8 11 56 39 (3)52 51 239 
Total$2,540 $1,760 $1,358 $580 $1,799 $362 $457 $294 $9,150 
For the Three-Month Period Ended June 30, 2020
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail electric$1,066 $468 $638 $— $— $— $— $— $2,172 
Retail gas— 84 20 — — — — — 104 
Wholesale17 37 6 — — — — (1)59 
Transmission and
   distribution		24 18 22 191 — 164 — — 419 
Interstate pipeline— — — — 221 — — (26)195 
Other20 — — — — — — — 20 
Total Regulated1,127 607 686 191 221 164 — (27)2,969 
Nonregulated— 3 1 5 — 5 212 122 348 
Total Customer Revenue1,127 610 687 196 221 169 212 95 3,317 
Other revenue17 6 8 25 4 — 32 10 102 
Total$1,144 $616 $695 $221 $225 $169 $244 $105 $3,419 
For the Six-Month Period Ended June 30, 2020
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE Pipeline GroupBHE TransmissionBHE Renewables
BHE and
Other(1)
Total
Customer Revenue:
Regulated:
Retail electric$2,188 $878 $1,167 $— $— $— $— $— $4,233 
Retail gas— 271 67 — — — — — 338 
Wholesale17 101 20 — — — — (2)136 
Transmission and
   distribution		46 33 45 424 — 333 — — 881 
Interstate pipeline— — — — 621 — — (74)547 
Other46 — 1 — — — — — 47 
Total Regulated2,297 1,283 1,300 424 621 333 — (76)6,182 
Nonregulated— 9 2 12 — 8 371 249 651 
Total Customer Revenue2,297 1,292 1,302 436 621 341 371 173 6,833 
Other revenue53 10 15 51 5 — 51 35 220 
Total$2,350 $1,302 $1,317 $487 $626 $341 $422 $208 $7,053 

(1)The BHE and Other reportable segment represents amounts related principally to other entities, corporate functions and intersegment eliminations.

Real Estate Services

The following table summarizes the Company's real estate services Customer Revenue by line of business (in millions):
HomeServices
Three-Month PeriodsSix-Month Periods
Ended June 30,Ended June 30,
2021202020212020
Customer Revenue:
Brokerage$1,569 $957 $2,591 $1,734 
Franchise24 15 42 31 
Total Customer Revenue1,593 972 2,633 1,765 
Mortgage and other revenue170 221 362 321 
Total$1,763 $1,193 $2,995 $2,086 
 Three-Month PeriodsSix-Month Periods
Ended June 30,Ended June 30,
 2021202020212020
Operating revenue by country:
United States$5,604 $4,224 $11,201 $8,313 
United Kingdom280 221 580 487 
Canada180 167 357 338 
Philippines and other— — 7 1 
Total operating revenue by country$6,064 $4,612 $12,145 $9,139 
Income before income tax expense (benefit) and equity loss by country:
United States$2,611 $1,027 $2,188 $1,381 
United Kingdom104 59 236 168 
Canada46 46 85 86 
Philippines and other(1)13 5 17 
Total income before income tax expense (benefit) and equity loss by country$2,760 $1,145 $2,514 $1,652 
Schedule of Goodwill
The following table shows the change in the carrying amount of goodwill by reportable segment for the six-month period ended June 30, 2021 (in millions):
BHE Pipeline Group
PacifiCorpMidAmerican FundingNV EnergyNorthern PowergridBHE TransmissionBHE RenewablesHomeServices
Total
 
December 31, 2020$1,129 $2,102 $2,369 $1,000 $1,803 $1,551 $95 $1,457 $11,506 
Acquisitions— — — — 11 — — 2 13 
Foreign currency translation
— — — 9 — 42 — — 51 
June 30, 2021$1,129 $2,102 $2,369 $1,009 $1,814 $1,593 $95 $1,459 $11,570 
MEC  
Segment Reporting Information [Line Items]  
Schedule of Segment Reporting Information by Segment
The following tables provide information on a reportable segment basis (in millions):
Three-Month PeriodsSix-Month Periods
 Ended June 30,Ended June 30,
2021202020212020
Operating revenue:
Regulated electric$586 $518 $1,131 $989 
Regulated natural gas106 95 618 304 
Other1 — 11 1 
Total operating revenue$693 $613 $1,760 $1,294 
Operating income:
Regulated electric$103 $101 $112 $160 
Regulated natural gas— 7 39 46 
Other— — — — 
Total operating income103 108 151 206 
Interest expense(74)(74)(148)(150)
Allowance for borrowed funds2 4 4 7 
Allowance for equity funds8 9 14 17 
Other, net15 21 26 16 
Income before income tax benefit$54 $68 $47 $96 

As of
June 30,
2021		December 31,
2020
Assets:
Regulated electric$20,349 $19,892 
Regulated natural gas1,708 1,544 
Other— 1 
Total assets$22,057 $21,437 
Disaggregation of Revenue
The following table summarizes MidAmerican Energy's revenue from contracts with customers ("Customer Revenue") by line of business, with further disaggregation of retail by customer class, including a reconciliation to MidAmerican Energy's reportable segment information included in Note 11, (in millions):
For the Three-Month Period Ended June 30, 2021For the Six-Month Period Ended June 30, 2021
ElectricNatural GasOtherTotalElectricNatural GasOtherTotal
Customer Revenue:
Retail:
Residential$170 $59 $— $229 $331 $367 $— $698 
Commercial80 18 — 98 151 147 — 298 
Industrial230 3 — 233 420 15 — 435 
Natural gas transportation services— 9 — 9 — 19 — 19 
Other retail(1)
36 — — 36 66 1 — 67 
Total retail516 89 — 605 968 549 — 1,517 
Wholesale52 17 — 69 126 68 — 194 
Multi-value transmission projects15 — — 15 30 — — 30 
Other Customer Revenue— — 1 1 — — 11 11 
Total Customer Revenue583 106 1 690 1,124 617 11 1,752 
Other revenue3 — — 3 7 1 — 8 
Total operating revenue$586 $106 $1 $693 $1,131 $618 $11 $1,760 

For the Three-Month Period Ended June 30, 2020For the Six-Month Period Ended June 30, 2020
ElectricNatural GasOtherTotalElectricNatural GasOtherTotal
Customer Revenue:
Retail:
Residential$166 $59 $— $225 $314 $187 $— $501 
Commercial73 15 — 88 143 58 — 201 
Industrial197 3 — 200 360 7 — 367 
Natural gas transportation services— 7 — 7 — 18 — 18 
Other retail(1)
32 1 — 33 61 1 — 62 
Total retail468 85 — 553 878 271 — 1,149 
Wholesale28 9 — 37 70 31 — 101 
Multi-value transmission projects17 — — 17 33 — — 33 
Other Customer Revenue— — — — — — 1 1 
Total Customer Revenue513 94 — 607 981 302 1 1,284 
Other revenue5 1 — 6 8 2 — 10 
Total operating revenue$518 $95 $— $613 $989 $304 $1 $1,294 

(1)    Other retail includes provisions for rate refunds, for which any actual refunds will be reflected in the applicable customer classes upon resolution of the related regulatory proceeding.
MidAmerican Funding, LLC  
Segment Reporting Information [Line Items]  
Schedule of Segment Reporting Information by Segment
The following tables provide information on a reportable segment basis (in millions):
Three-Month PeriodsSix-Month Periods
Ended June 30,Ended June 30,
2021202020212020
Operating revenue:
Regulated electric$586 $518 $1,131 $989 
Regulated natural gas106 95 618 304 
Other1 3 11 9 
Total operating revenue$693 $616 $1,760 $1,302 
Operating income:
Regulated electric$103 $101 $112 $160 
Regulated natural gas— 7 39 46 
Other— 2 — 6 
Total operating income103 110 151 212 
Interest expense(78)(78)(156)(159)
Allowance for borrowed funds2 4 4 7 
Allowance for equity funds8 9 14 17 
Other, net16 21 26 15 
Income before income tax benefit$51 $66 $39 $92 

As of
June 30,
2021		December 31,
2020
Assets(1):
Regulated electric$21,540 $21,083 
Regulated natural gas1,787 1,623 
Other4 5 
Total assets$23,331 $22,711 
(1)Assets by reportable segment reflect the assignment of goodwill to applicable reporting units.
SPPC  
Segment Reporting Information [Line Items]  
Schedule of Segment Reporting Information by Segment
The following tables provide information on a reportable segment basis (in millions):
Three-Month PeriodsSix-Month Periods
Ended June 30,Ended June 30,
2021202020212020
Operating revenue:
Regulated electric$189 $165 $370 $349 
Regulated natural gas20 20 59 68 
Total operating revenue$209 $185 $429 $417 
Operating income:
Regulated electric$21 $20 $52 $53 
Regulated natural gas4 3 12 10 
Total operating income25 23 64 63 
Interest expense(13)(14)(27)(28)
Allowance for borrowed funds1 1 1 1 
Allowance for equity funds2 1 3 2 
Other, net3 3 9 4 
Income before income tax expense$18 $14 $50 $42 

As of
June 30,December 31,
20212020
Assets:
Regulated electric$3,665 $3,540 
Regulated natural gas350 342 
Other(1)
27 37 
Total assets$4,042 $3,919 

(1)    Consists principally of cash and cash equivalents not included in either the regulated electric or regulated natural gas segments.
Disaggregation of Revenue
The following table summarizes Sierra Pacific's revenue from contracts with customers ("Customer Revenue") by line of business, with further disaggregation of retail by customer class, including a reconciliation to Sierra Pacific's reportable segment information included in Note 10 (in millions):
Three-Month Periods
Ended June 30,
20212020
ElectricNatural GasTotalElectricNatural GasTotal
Customer Revenue:
Retail:
Residential$68 $13 $81 $63 $14 $77 
Commercial64 5 69 56 4 60 
Industrial42 2 44 34 2 36 
Other1 — 1 1 — 1 
Total fully bundled175 20 195 154 20 174 
Distribution only service1 — 1 1 — 1 
Total retail176 20 196 155 20 175 
Wholesale, transmission and other12 — 12 9 — 9 
Total Customer Revenue188 20 208 164 20 184 
Other revenue1 — 1 1 — 1 
Total revenue$189 $20 $209 $165 $20 $185 
Six-Month Periods
Ended June 30,
20212020
ElectricNatural GasTotalElectricNatural GasTotal
Customer Revenue:
Retail:
Residential$138 $38 $176 $132 $44 $176 
Commercial117 15 132 112 17 129 
Industrial81 5 86 75 6 81 
Other3 — 3 2 — 2 
Total fully bundled339 58 397 321 67 388 
Distribution only service2 — 2 2 — 2 
Total retail341 58 399 323 67 390 
Wholesale, transmission and other28 — 28 24 — 24 
Total Customer Revenue369 58 427 347 67 414 
Other revenue1 1 2 2 1 3 
Total revenue$370 $59 $429 $349 $68 $417