Supplemental Cash Flow Disclosures - PacifiCorp (Details) - USD ($) $ in Millions		12 Months Ended
		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Condensed Cash Flow Statements, Captions [Line Items]
Interest paid, net of amounts capitalized		$ 1,673	$ 1,764	$ 1,585
Income Taxes Paid, Net	[1]	(1,016)	(1,666)	(635)
Accruals related to property, plant and equipment additions		547	718	1,143
PacifiCorp [Member]
Condensed Cash Flow Statements, Captions [Line Items]
Interest paid, net of amounts capitalized		350	342	340
Income Taxes Paid, Net		201	40	161
Accruals related to property, plant and equipment additions		101	147	140
Accounts receivable related to property, plant and equipment sales		$ 0	$ 40	$ 0

[1] Includes $1.1 billion, $1.8 billion and $764 million of income taxes received from Berkshire Hathaway in 2016, 2015 and 2014, respectively.