Related Party Transactions Related Party Transactions (Notes)	12 Months Ended
	Dec. 31, 2019
PacifiCorp [Member]
Related Party Transaction [Line Items]
Related Party Transactions Disclosure [Text Block]	Related-Party Transactions PacifiCorp has an intercompany administrative services agreement with BHE and its subsidiaries. Amounts charged to PacifiCorp by BHE and its subsidiaries under this agreement totaled $10 million, $12 million and $11 million during the years ended December 31, 2019, 2018 and 2017, respectively. Payables associated with these administrative services were immaterial as of December 31, 2019 and 2018, respectively. Amounts charged by PacifiCorp to BHE and its subsidiaries under this agreement, as well as receivables associated with these administrative services, were immaterial during the years ended December 31, 2019, 2018 and 2017, respectively. PacifiCorp also engages in various transactions with several subsidiaries of BHE in the ordinary course of business. Services provided by these subsidiaries in the ordinary course of business and charged to PacifiCorp primarily relate to wholesale electricity purchases and transmission of electricity, transportation of natural gas and employee relocation services. These expenses totaled $7 million, $8 million and $6 million during the years ended December 31, 2019, 2018 and 2017, respectively. Payables associated with these services were immaterial as of December 31, 2019 and 2018, respectively. Amounts charged by PacifiCorp to subsidiaries of BHE for wholesale electricity sales in the ordinary course of business were immaterial during the years ended December 31, 2019, 2018 and 2017, respectively. PacifiCorp has long-term transportation contracts with BNSF Railway Company ("BNSF"), an indirect wholly owned subsidiary of Berkshire Hathaway, PacifiCorp's ultimate parent company. Transportation costs under these contracts were $35 million, $33 million and $35 million during the years ended December 31, 2019, 2018 and 2017, respectively. As of December 31, 2019 and 2018, PacifiCorp had immaterial amounts of accounts payable to BNSF outstanding under these contracts, including indirect payables related to a jointly owned facility. PacifiCorp is party to a tax-sharing agreement and is part of the Berkshire Hathaway consolidated United States federal income tax return. Federal and state income taxes payable to BHE were $31 million and $10 million as of December 31, 2019 and 2018, respectively. For the years ended December 31, 2019, 2018 and 2017, cash paid for federal and state income taxes to BHE totaled $171 million, $144 million and $340 million, respectively. PacifiCorp transacts with its equity investees, Bridger Coal and Trapper Mining Inc. During the years ended December 31, 2019, 2018 and 2017, PacifiCorp charged Bridger Coal immaterial amounts, primarily for administrative support and management services provided by PacifiCorp to Bridger Coal. Receivables for these services, as well as for certain expenses paid by PacifiCorp and reimbursed by Bridger Coal, were immaterial as of December 31, 2019 and 2018, respectively. Services provided by equity investees to PacifiCorp primarily relate to coal purchases. During the years ended December 31, 2019, 2018 and 2017, coal purchases from PacifiCorp's equity investees totaled $155 million, $163 million and $170 million, respectively. Payables to PacifiCorp's equity investees were $12 million and $13 million as of December 31, 2019 and 2018, respectively.
MidAmerican Energy Company [Member]
Related Party Transaction [Line Items]
Related Party Transactions Disclosure [Text Block]	Related Party Transactions The companies identified as affiliates of MidAmerican Energy are Berkshire Hathaway and its subsidiaries, including BHE and its subsidiaries. The basis for the following transactions is provided for in service agreements between MidAmerican Energy and the affiliates. MidAmerican Energy is reimbursed for charges incurred on behalf of its affiliates. The majority of these reimbursed expenses are for general costs, such as insurance and building rent, and for employee wages, benefits and costs related to corporate functions such as information technology, human resources, treasury, legal and accounting. The amount of such reimbursements was $43 million, $51 million and $53 million for 2019, 2018 and 2017, respectively. Additionally, in 2018, MidAmerican Energy received $15 million from BHE for the transfer of a corporate aircraft. MidAmerican Energy reimbursed BHE in the amount of $14 million, $11 million and $9 million in 2019, 2018 and 2017, respectively, for its share of corporate expenses. MidAmerican Energy purchases natural gas transportation and storage capacity services from Northern Natural Gas Company, a wholly owned subsidiary of BHE, and coal transportation services from BNSF Railway Company, an indirect wholly owned subsidiary of Berkshire Hathaway, in the normal course of business at either tariffed or market prices. These purchases totaled $139 million, $127 million and $122 million in 2019, 2018 and 2017, respectively. MidAmerican Energy had accounts receivable from affiliates of $6 million and $8 million as of December 31, 2019 and 2018, respectively, that are included in receivables on the Balance Sheets. MidAmerican Energy also had accounts payable to affiliates of $11 million and $12 million as of December 31, 2019 and 2018, respectively, that are included in accounts payable on the Balance Sheets. MidAmerican Energy is party to a tax-sharing agreement and is part of the Berkshire Hathaway consolidated United States federal income tax return. For current federal and state income taxes, MidAmerican Energy had a payable to BHE of $82 million and $156 million as of December 31, 2019 and 2018, respectively. MidAmerican Energy received net cash receipts for federal and state income taxes from BHE totaling $450 million, $494 million and $465 million for the years ended December 31, 2019, 2018 and 2017, respectively. MidAmerican Energy recognizes the full amount of the funded status for its pension and postretirement plans, and amounts attributable to MidAmerican Energy's affiliates that have not previously been recognized through income are recognized as an intercompany balance with such affiliates. MidAmerican Energy adjusts these balances when changes to the funded status of the respective plans are recognized and does not intend to settle the balances currently. Amounts receivable from affiliates attributable to the funded status of employee benefit plans totaled $23 million and $20 million as of December 31, 2019 and 2018, respectively, and similar amounts payable to affiliates totaled $47 million and $36 million as of December 31, 2019 and 2018, respectively. See Note 10 for further information pertaining to pension and postretirement accounting.
MidAmerican Funding, LLC and Subsidiaries [Domain]
Related Party Transaction [Line Items]
Related Party Transactions Disclosure [Text Block]	Related Party Transactions The companies identified as affiliates of MidAmerican Funding are Berkshire Hathaway and its subsidiaries, including BHE and its subsidiaries. The basis for the following transactions is provided for in service agreements between MidAmerican Funding and the affiliates. MidAmerican Funding is reimbursed for charges incurred on behalf of its affiliates. The majority of these reimbursed expenses are for allocated general costs, such as insurance and building rent, and for employee wages, benefits and costs for corporate functions, such as information technology, human resources, treasury, legal and accounting. The amount of such reimbursements was $41 million, $44 million and $46 million for 2019, 2018 and 2017, respectively. Additionally, in 2018, MidAmerican Funding received $15 million from BHE for the transfer of corporate aircraft owned by MidAmerican Energy and, in 2019, recorded a noncash dividend of $8 million for the transfer to BHE of corporate aircraft owned by MHC. MidAmerican Funding reimbursed BHE in the amount of $14 million, $11 million and $9 million in 2019, 2018 and 2017, respectively, for its share of corporate expenses. MidAmerican Energy purchases natural gas transportation and storage capacity services from Northern Natural Gas Company, a wholly owned subsidiary of BHE, and coal transportation services from BNSF Railway Company, a wholly-owned subsidiary of Berkshire Hathaway, in the normal course of business at either tariffed or market prices. These purchases totaled $139 million, $127 million and $122 million in 2019, 2018 and 2017, respectively. MHC has a $300 million revolving credit arrangement carrying interest at the 30-day LIBOR rate plus a spread to borrow from BHE. Outstanding balances are unsecured and due on demand. The outstanding balance was $171 million at an interest rate of 1.944% as of December 31, 2019, and $156 million at an interest rate of 2.629% as of December 31, 2018, and is reflected as note payable to affiliate on the Consolidated Balance Sheet. BHE has a $100 million revolving credit arrangement, carrying interest at the 30-day LIBOR rate plus a spread to borrow from MHC. Outstanding balances are unsecured and due on demand. There were no borrowings outstanding throughout 2019 and 2018. MidAmerican Funding had accounts receivable from affiliates of $7 million and $5 million as of December 31, 2019 and 2018, respectively, that are included in receivables, net on the Consolidated Balance Sheets. MidAmerican Funding also had accounts payable to affiliates of $11 million and $12 million as of December 31, 2019 and 2018, respectively, that are included in accounts payable on the Consolidated Balance Sheets. MidAmerican Funding is party to a tax-sharing agreement and is part of the Berkshire Hathaway consolidated United States federal income tax return. For current federal and state income taxes, MidAmerican Funding had a payable to BHE of $83 million and $156 million as of December 31, 2019 and 2018, respectively. MidAmerican Funding received net cash receipts for federal and state income taxes from BHE totaling $456 million, $511 million and $472 million for the years ended December 31, 2019, 2018 and 2017, respectively. MidAmerican Funding recognizes the full amount of the funded status for its pension and postretirement plans, and amounts attributable to MidAmerican Funding's affiliates that have not previously been recognized through income are recognized as an intercompany balance with such affiliates. MidAmerican Funding adjusts these balances when changes to the funded status of the respective plans are recognized and does not intend to settle the balances currently. Amounts receivable from affiliates attributable to the funded status of employee benefit plans totaled $23 million and $20 million as of December 31, 2019 and 2018, respectively, and similar amounts payable to affiliates totaled $47 million and $36 million as of December 31, 2019 and 2018, respectively. See Note 10 for further information pertaining to pension and postretirement accounting. The indenture pertaining to MidAmerican Funding's long-term debt restricts MidAmerican Funding from paying a distribution on its equity securities, unless after making such distribution either its debt to total capital ratio does not exceed 0.67:1 and its interest coverage ratio is not less than 2.2:1 or its senior secured long-term debt rating is at least BBB or its equivalent. MidAmerican Funding may seek a release from this restriction upon delivery to the indenture trustee of written confirmation from the ratings agencies that without this restriction MidAmerican Funding's senior secured long-term debt would be rated at least BBB+.
Nevada Power Company [Member]
Related Party Transaction [Line Items]
Related Party Transactions Disclosure [Text Block]	Related Party Transactions Nevada Power has an intercompany administrative services agreement with BHE and its subsidiaries. Amounts charged to Nevada Power under this agreement totaled $2 million for the years ended December 31, 2019, 2018 and 2017. Kern River Gas Transmission Company, an indirect subsidiary of BHE, provided natural gas transportation and other services to Nevada Power of $52 million, $58 million and $66 million for the years ended December 31, 2019, 2018 and 2017. As of December 31, 2019 and 2018, Nevada Power's Consolidated Balance Sheets included amounts due to Kern River Gas Transmission Company of $4 million. Nevada Power provided electricity and other services to PacifiCorp, an indirect subsidiary of BHE, of $2 million, $3 million and $3 million for the years ended December 31, 2019, 2018 and 2017, respectively. Receivables associated with these services were $- million as of December 31, 2019 and 2018. PacifiCorp provided electricity and the sale of renewable energy credits to Nevada Power of $- million for the years ended December 31, 2019, 2018 and 2017. Payables associated with these transactions were $-million as of December 31, 2019 and 2018. Nevada Power provided electricity to Sierra Pacific of $84 million, $91 million and $104 million for the years ended December 31, 2019, 2018 and 2017, respectively. Receivables associated with these transactions were $5 million and $6 million as of December 31, 2019 and 2018, respectively. Nevada Power purchased electricity from Sierra Pacific of $25 million, $28 million and $21 million for the years ended December 31, 2019, 2018 and 2017, respectively. Payables associated with these transactions were $1 million as of December 31, 2019 and 2018. Nevada Power incurs intercompany administrative and shared facility costs with NV Energy and Sierra Pacific. These transactions are governed by an intercompany service agreement and are priced at cost. Nevada Power provided services to NV Energy of $-million, $1 million and $- million for each of the years ending December 31, 2019, 2018 and 2017, respectively. NV Energy provided services to Nevada Power of $9 million, $7 million and $10 million for the years ending December 31, 2019, 2018 and 2017, respectively. Nevada Power provided services to Sierra Pacific of $26 million, $28 million and $27 million for the years ended December 31, 2019, 2018 and 2017, respectively. Sierra Pacific provided services to Nevada Power of $14 million, $15 million and $17 million for the years ended December 31, 2019, 2018 and 2017, respectively. As of December 31, 2019 and 2018, Nevada Power's Consolidated Balance Sheets included amounts due to NV Energy of $26 million. There were no receivables due from NV Energy as of December 31, 2019 and 2018. As of December 31, 2019 and 2018, Nevada Power's Consolidated Balance Sheets included receivables due from Sierra Pacific of $3 million and $5 million, respectively. There were no payables due to Sierra Pacific as of December 31, 2019 and 2018. Nevada Power is party to a tax-sharing agreement with NV Energy and NV Energy is part of the Berkshire Hathaway consolidated United States federal income tax return. Federal income taxes receivable from NV Energy were $7 million as of December 31, 2019 and federal income taxes payable to NV Energy were $4 million as of December 31, 2018. Nevada Power made cash payments of $113 million, $117 million and $89 million for federal income taxes for the years ended December 31, 2019, 2018 and 2017, respectively. Certain disbursements for accounts payable and payroll are made by NV Energy on behalf of Nevada Power and reimbursed automatically when settled by the bank. These amounts are recorded as accounts payable at the time of disbursement.