Supplemental Cash Flow Disclosures - PacifiCorp (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents		$ 1,040	$ 627
Interest paid, net of amounts capitalized		1,723	1,713	$ 1,715
Income Taxes Paid, Net	[1]	(850)	(780)	(540)
Accruals related to property, plant and equipment additions		888	823	653
Restricted Cash and Cash Equivalents, Current		212	227
Restricted Cash and Cash Equivalents, Noncurrent		16	29
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents		1,268	883	1,283	$ 1,003
PacifiCorp [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Cash and cash equivalents		30	77
Interest paid, net of amounts capitalized		340	347	350
Income Taxes Paid, Net		171	144	340
Accruals related to property, plant and equipment additions		293	184	147
Restricted Cash and Cash Equivalents, Current		4	13
Restricted Cash and Cash Equivalents, Noncurrent		2	2
Cash, Cash Equivalents, Restricted Cash and Restricted Cash Equivalents		$ 36	$ 92	$ 29	$ 33

[1] Includes $942 million, $884 million and $636 million of income taxes received from Berkshire Hathaway in 2019, 2018 and 2017, respectively.