Risk Management and Hedging Activities - PacifiCorp - Balance Sheet Location (Details) - USD ($) $ in Millions		Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		$ (77)	$ (237)
Cash Collateral, Net Receivable (Payable), Offset Against Derivative Positions		74	103
Derivative Assets (Liabilities), at Fair Value, Net		(3)	(134)
Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		48	28
Cash Collateral, Net Receivable (Payable), Offset Against Derivative Positions		0	0
Derivative Assets (Liabilities), at Fair Value, Net		48	28
Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		(60)	(145)
Cash Collateral, Net Receivable (Payable), Offset Against Derivative Positions		13	40
Derivative Assets (Liabilities), at Fair Value, Net		(47)	(105)
Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		(66)	(188)
Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		47	28
Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		(45)	(109)
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	[1]	135	106
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	[1]	(206)	(292)
Derivative, Fair Value, Net		(71)	(186)
Net Regulatory Asset (Liability), Unrealized Loss (Gain) On Derivative Contracts		148	250	$ 223	$ 182
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	[1]	42	25
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	[1]	(10)	(4)
Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement	[1]	5	7
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement	[1]	(46)	(113)
PacifiCorp [Member] | Commodity Contract [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		(77)	(136)
Cash Collateral, Net Receivable (Payable), Offset Against Derivative Positions		69	75
Derivative Assets (Liabilities), at Fair Value, Net		(8)	(61)
PacifiCorp [Member] | Commodity Contract [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		18	9
Cash Collateral, Net Receivable (Payable), Offset Against Derivative Positions		0	0
Derivative Assets (Liabilities), at Fair Value, Net		18	9
PacifiCorp [Member] | Commodity Contract [Member] | Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		2	0
Cash Collateral, Net Receivable (Payable), Offset Against Derivative Positions		0	0
Derivative Assets (Liabilities), at Fair Value, Net		2	0
PacifiCorp [Member] | Commodity Contract [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		(13)	(56)
Cash Collateral, Net Receivable (Payable), Offset Against Derivative Positions		10	18
Derivative Assets (Liabilities), at Fair Value, Net		(3)	(38)
PacifiCorp [Member] | Commodity Contract [Member] | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative, Fair Value, Net		(84)	(89)
Cash Collateral, Net Receivable (Payable), Offset Against Derivative Positions		59	57
Derivative Assets (Liabilities), at Fair Value, Net		(25)	(32)
PacifiCorp [Member] | Commodity Contract [Member] | Not Designated as Hedging Instrument [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		27	12
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(104)	(148)
Derivative, Fair Value, Net		(77)	(136)
Net Regulatory Asset (Liability), Unrealized Loss (Gain) On Derivative Contracts		73	133	$ 85	$ 55
PacifiCorp [Member] | Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		24	10
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(6)	(1)
Derivative, Fair Value, Net		18	9
PacifiCorp [Member] | Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Noncurrent Assets [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		2	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		0	0
Derivative, Fair Value, Net		2	0
PacifiCorp [Member] | Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Current Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		1	2
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(14)	(58)
Derivative, Fair Value, Net		(13)	(56)
PacifiCorp [Member] | Commodity Contract [Member] | Not Designated as Hedging Instrument [Member] | Other Noncurrent Liabilities [Member]
Derivatives, Fair Value [Line Items]
Derivative Asset, Fair Value, Gross Asset Including Not Subject to Master Netting Arrangement		0	0
Derivative Liability, Fair Value, Gross Liability Including Not Subject to Master Netting Arrangement		(84)	(89)
Derivative, Fair Value, Net		$ (84)	$ (89)

[1] The Company's commodity derivatives not designated as hedging contracts are generally included in regulated rates, and as of December 31, 2016 and 2015, a net regulatory asset of $148 million and $250 million, respectively, was recorded related to the net derivative liability of $71 million and $186 million, respectively. The difference between the net regulatory asset and the net derivative liability relates primarily to a power purchase agreement derivative at BHE Renewables.