Recent Financing Transactions Recent Financings Transactions - Credit Facilities (Details) - USD ($) $ in Millions	May 31, 2019	May 01, 2019
MidAmerican Energy Company [Member] | Unsecured credit facility, $900 million, expiring June 2022 [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 900
Berkshire Hathaway Energy [Member] | Unsecured credit facility, $3.5 billion, expiring June 2022 [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	3,500
PacifiCorp [Member] | Unsecured credit facility, $600 million, expiring June 2022, first facility, extended [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	600
PacifiCorp [Member] | Unsecured credit facility, $600 million, expiring June 2022, second facility, extended [Member] | Line of Credit [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity	$ 600
NVE Holdings [Member] | Line of Credit [Member] | Nevada Power Company [Member] | Secured credit facility, $400 million, expiring June 2022 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 400
NVE Holdings [Member] | Line of Credit [Member] | Sierra Pacific Power Company [Member] | Secured credit facility, $250 million, expiring June 2022 [Member]
Line of Credit Facility [Line Items]
Line of Credit Facility, Maximum Borrowing Capacity		$ 250