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Summary of Significant Accounting Policies (Tables)
 12 Months Ended
Dec. 31, 2024
Allowance for Doubtful Accounts [Line Items]  
Schedule of Cash Flow Supplemental Disclosures A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2024 and 2023, as presented on the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of December 31,
20242023
Cash and cash equivalents$1,392 $1,565 
Investments and restricted cash and cash equivalents177 224 
Investments and restricted cash and cash equivalents and investments17 22 
Total cash and cash equivalents and restricted cash and cash equivalents$1,586 $1,811 
The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):
202420232022
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$2,304 $2,109 $2,071 
Income taxes received, net(1)
$1,501 $1,370 $1,863 
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$1,337 $1,494 $1,049 
Issuance of note payable in exchange for common stock$600 $— $— 
BHE B Merger:
Tax equity investments, net of deferred taxes$985 $— $— 
U.S. Treasury Bill exchanged for BHE B preferred stock(364)— — 
Issuance of 4% Perpetual Preferred Stock
(481)— — 
BHE B common equity(140)— — 
Total$— $— $— 

(1)Includes $1,580 million, $1,479 million and $1,961 million of income taxes received from Berkshire Hathaway in 2024, 2023 and 2022, respectively.
Schedule of Allowance for Credit Loss The changes in the balance of the allowance for credit losses, which is included in trade receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31 (in millions):
202420232022
Beginning balance$102 $106 $108 
Charged to operating costs and expenses, net61 68 43 
Write-offs, net(84)(72)(45)
Ending balance$79 $102 $106 
PAC  
Allowance for Doubtful Accounts [Line Items]  
Schedule of Cash Flow Supplemental Disclosures A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2024 and 2023 as presented on the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of December 31,
20242023
Cash and cash equivalents$46 $138 
Restricted cash included in other current assets12 51 
Restricted cash included in other assets3 3 
Total cash and cash equivalents and restricted cash and cash equivalents$61 $192 
The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):
202420232022
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$527 $432 $380 
Income taxes received, net
$349 $292 $185 
Supplemental disclosure of non-cash investing and financing activities:
Accruals related to property, plant and equipment additions
$773 $862 $558 
Schedule of Allowance for Credit Loss The changes in the balance of the allowance for credit losses, which is included in trade receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31 (in millions):
202420232022
Beginning balance$30 $19 $18 
Charged to operating costs and expenses, net26 34 18 
Write-offs, net(34)(23)(17)
Ending balance$22 $30 $19 
Schedule of Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Utility Plant:
Generation
15 - 59 years
$14,316 $13,904 
Transmission
60 - 90 years
10,939 8,216 
Distribution
20 - 75 years
9,842 9,060 
Intangible plant and other
2 - 75 years
2,958 2,833 
Utility plant in-service38,055 34,013 
Accumulated depreciation and amortization(12,504)(11,725)
Utility plant in-service, net25,551 22,288 
Nonregulated, net of accumulated depreciation and amortization
14 - 75 years
19 18 
25,570 22,306 
Construction work-in-progress3,550 4,745 
Property, plant and equipment, net$29,120 $27,051 
MEC  
Allowance for Doubtful Accounts [Line Items]  
Schedule of Cash Flow Supplemental Disclosures A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2024 and 2023 as presented on the Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Balance Sheets (in millions):
As of December 31,
20242023
Cash and cash equivalents$549 $636 
Restricted cash and cash equivalents in other current assets6 6 
Total cash and cash equivalents and restricted cash and cash equivalents$555 $642 
The summary of supplemental cash flow disclosures as of and for the years ending December 31 is as follows (in millions):
202420232022
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$374 $300 $292 
Income taxes received, net
$898 $852 $840 
Supplemental disclosure of non-cash investing transactions:
Accruals related to property, plant and equipment additions
$108 $193 $168 
Schedule of Allowance for Credit Loss The changes in the balance of the allowance for credit losses, which is included in trade receivables, net on the Balance Sheets, is summarized as follows for the years ended December 31 (in millions):
202420232022
Beginning balance$12 $14 $12 
Charged to operating costs and expenses, net8 8 11 
Write-offs, net(9)(10)(9)
Ending balance$11 $12 $14 
Schedule of Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Utility plant:
Generation
20-62 years
$18,446 $18,129 
Transmission
55-80 years
3,029 2,834 
Electric distribution
15-80 years
5,890 5,288 
Natural gas distribution
30-75 years
2,413 2,294 
Utility plant in-service29,778 28,545 
Accumulated depreciation and amortization(8,572)(7,841)
Utility plant in-service, net21,206 20,704 
Nonregulated property, net of accumulated depreciation and amortization
20-50 years
6 6 
21,212 20,710 
Construction work-in-progress1,553 1,260 
Property, plant and equipment, net$22,765 $21,970 
MidAmerican Funding, LLC  
Allowance for Doubtful Accounts [Line Items]  
Schedule of Cash Flow Supplemental Disclosures A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2024 and 2023 as presented on the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of December 31,
20242023
Cash and cash equivalents$552 $637 
Restricted cash and cash equivalents in other current assets6 6 
Total cash and cash equivalents and restricted cash and cash equivalents$558 $643 
The summary of supplemental cash flow information as of and for the years ending December 31 is as follows (in millions):
202420232022
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$391 $317 $309 
Income taxes received, net
$903 $855 $845 
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions
$108 $193 $168 
NPC  
Allowance for Doubtful Accounts [Line Items]  
Schedule of Cash Flow Supplemental Disclosures A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2024 and December 31, 2023, as presented on the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of December 31,
20242023
Cash and cash equivalents$23 $20 
Restricted cash and cash equivalents included in other current assets19 17 
Total cash and cash equivalents and restricted cash and cash equivalents$42 $37 
The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):
202420232022
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$173 $159 $121 
Income taxes (refunded) paid$177 $(52)$(29)
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$169 $230 $98 
Schedule of Allowance for Credit Loss The changes in the balance of the allowance for credit losses, which is included in trade receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31, (in millions):
202420232022
Beginning balance$20 $20 $18 
Charged to operating costs and expenses, net19 18 14 
Write-offs, net(22)(18)(12)
Ending balance$17 $20 $20 
Schedule of Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Utility plant:
Generation
30 - 65 years
$5,369 $4,476 
Transmission
55 - 75 years
1,660 1,590 
Distribution
24 - 70 years
4,754 4,451 
Intangible plant and other
5 - 65 years
900 906 
 Utility plant
12,683 11,423 
Accumulated depreciation and amortization(4,093)(3,856)
Utility plant, net8,590 7,567 
Nonregulated, net of accumulated depreciation and amortization
40 years
1 1 
8,591 7,568 
Construction work-in-progress810 1,090 
Property, plant and equipment, net$9,401 $8,658 
SPPC  
Allowance for Doubtful Accounts [Line Items]  
Schedule of Cash Flow Supplemental Disclosures A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2024 and December 31, 2023, as presented on the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of December 31,
20242023
Cash and cash equivalents$17 $44 
Restricted cash and cash equivalents included in other current assets7 8 
Total cash and cash equivalents and restricted cash and cash equivalents$24 $52 
The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):
202420232022
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$72 $49 $45 
Income taxes paid (refunded)
$66 $56 $(1)
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$133 $51 $57 
Schedule of Allowance for Credit Loss The changes in the balance of the allowance for credit losses, which is included in trade receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31, (in millions):
202420232022
Beginning balance$3 $2 $1 
Charged to operating costs and expenses, net4 4 2 
Write-offs, net(3)(3)(1)
Ending balance$4 $3 $2 
Schedule of Public Utility Property, Plant, and Equipment
Property, plant and equipment, net consists of the following as of December 31 (in millions):
Depreciable Life20242023
Utility plant:
Generation
25 - 70 years
$1,339 $1,313 
Transmission
50 - 76 years
1,071 1,023 
Electric distribution
20 - 76 years
2,224 2,074 
Electric intangible plant and other
5 - 65 years
254 247 
Natural gas distribution
35 - 70 years
563 537 
Natural gas intangible plant and other
5 - 65 years
18 17 
Common other
5 - 65 years
377 376 
Utility plant5,846 5,587 
Accumulated depreciation and amortization(2,208)(2,091)

3,638 3,496 
Construction work-in-progress801 326 
Property, plant and equipment, net$4,439 $3,822 
EEGH  
Allowance for Doubtful Accounts [Line Items]  
Schedule of Cash Flow Supplemental Disclosures A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2024 and 2023, as presented on the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of December 31,
20242023
Cash and cash equivalents$34 $62 
Restricted cash and cash equivalents27 31 
Total cash and cash equivalents and restricted cash and cash equivalents$61 $93 
The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):

202420232022
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$130 $144 $143 
Income taxes paid, net$— $5 $2 
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$10 $18 $29 
Equity distributions(1)
$(322)$(224)$(42)
Equity contributions(1)
$119 $38 $98 
(1)Amounts primarily represent the forgiveness of affiliated receivables/payables.
Schedule of Allowance for Credit Loss The changes in the balance of the allowance for credit losses, which is included in trade receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31, (in millions):
202420232022
Beginning balance$3 $3 $6 
Write-offs, net— — (3)
Ending balance$3 $3 $3 
EGTS  
Allowance for Doubtful Accounts [Line Items]  
Schedule of Cash Flow Supplemental Disclosures A reconciliation of cash and cash equivalents and restricted cash and cash equivalents as of December 31, 2024 and 2023, as presented on the Consolidated Statements of Cash Flows is outlined below and disaggregated by the line items in which they appear on the Consolidated Balance Sheets (in millions):
As of December 31,
20242023
Cash and cash equivalents$8 $5 
Restricted cash and cash equivalents24 29 
Total cash and cash equivalents and restricted cash and cash equivalents$32 $34 
The summary of supplemental cash flow disclosures as of and for the years ended December 31 is as follows (in millions):

202420232022
Supplemental disclosure of cash flow information:
Interest paid, net of amounts capitalized$66 $69 $67 
Income taxes paid, net
$— $5 $2 
Supplemental disclosure of non-cash investing and financing transactions:
Accruals related to property, plant and equipment additions$7 $9 $15 
Equity dividends(1)
$(91)$(23)$(21)
Equity contributions
$35 $29 $34 

(1)Equity dividends represents the forgiveness of affiliated receivables.
Schedule of Allowance for Credit Loss The changes in the balance of the allowance for credit losses, which is included in trade receivables, net on the Consolidated Balance Sheets, is summarized as follows for the years ended December 31, (in millions):
202420232022
Beginning balance$— $— $3 
Write-offs, net— — (3)
Ending balance$— $— $—