Consolidated Statements of Changes in Equity - USD ($) $ in Millions	Total	Common Stock [Member]	Additional Paid-in Capital [Member]	Retained Earnings [Member]	Accumulated Other Comprehensive Income (Loss) [Member]	Noncontrolling Interest [Member]	PacifiCorp [Member]	PacifiCorp [Member] Preferred Stock [Member]	PacifiCorp [Member] Common Stock [Member]	PacifiCorp [Member] Additional Paid-in Capital [Member]	PacifiCorp [Member] Retained Earnings [Member]	PacifiCorp [Member] Accumulated Other Comprehensive Income (Loss) [Member]	MidAmerican Energy Company [Member]	MidAmerican Energy Company [Member] Common Stock [Member]	MidAmerican Energy Company [Member] Retained Earnings [Member]	MidAmerican Energy Company [Member] Accumulated Other Comprehensive Income (Loss) [Member]	MidAmerican Funding, LLC and Subsidiaries [Domain]	MidAmerican Funding, LLC and Subsidiaries [Domain] Additional Paid-in Capital [Member]	MidAmerican Funding, LLC and Subsidiaries [Domain] Retained Earnings [Member]	MidAmerican Funding, LLC and Subsidiaries [Domain] Accumulated Other Comprehensive Income (Loss) [Member]	Sierra Pacific Power Company [Member]	Sierra Pacific Power Company [Member] Common Stock [Member]	Sierra Pacific Power Company [Member] Additional Paid-in Capital [Member]	Sierra Pacific Power Company [Member] Retained Earnings [Member]	Sierra Pacific Power Company [Member] Accumulated Other Comprehensive Income (Loss) [Member]	Nevada Power Company [Member]	Nevada Power Company [Member] Common Stock [Member]	Nevada Power Company [Member] Additional Paid-in Capital [Member]	Nevada Power Company [Member] Retained Earnings [Member]	Nevada Power Company [Member] Accumulated Other Comprehensive Income (Loss) [Member]
Balance (shares) at Dec. 31, 2013		77,000,000																				1,000					1,000
Balance at Dec. 31, 2013	$ 18,816	$ 0	$ 6,390	$ 12,418	$ (97)	$ 105
Balance at Dec. 31, 2013							$ 7,787	$ 2	$ 0	$ 4,479	$ 3,315	$ (9)	$ 3,845	$ 561	$ 3,295	$ (11)	$ 4,677	$ 1,679	$ 3,009	$ (11)	$ 1,016	$ 0	$ 1,111	$ (93)	$ (2)	$ 2,890	$ 0	$ 2,308	$ 586	$ (4)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,112	0	0	2,095	0	17
Net income	2,122
Net income (loss) attributable to parent	2,095						698		0	0	698	0	417		417		409		409		87			87		227			227
Other comprehensive income (loss)	(397)	0	0	0	(397)	0	(4)		0	0	0	(4)	(12)			(12)	(12)			(12)
Dividend, noncash, transfer of operations													0				0
Distributions	(22)	0	0	0	0	(22)
Common stock dividends declared							(725)		0	0	(725)	0									(105)			(105)		(230)			(230)
Other equity transactions	64	$ 0	33	0	0	31											(1)		(1)							1				1
Balance (shares) at Dec. 31, 2014		77,000,000																				1,000					1,000
Balance at Dec. 31, 2014	20,573	$ 0	6,423	14,513	(494)	131
Balance at Dec. 31, 2014							7,756	2	0	4,479	3,288	(13)	4,250	$ 561	3,712	(23)	5,073	1,679	3,417	(23)	998	$ 0	1,111	(111)	(2)	2,888	$ 0	2,308	583	(3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,388	0	0	2,370	0	18
Net income	2,400
Net income (loss) attributable to parent	2,370						695		0	0	695	0	462		462		458		458		83			83		288			288
Other comprehensive income (loss)	(414)	0	0	0	(414)	0	2		0	0	0	2	(7)			(7)	(7)			(7)
Dividend, noncash, transfer of operations													0				0
Distributions	(21)	0	0	0	0	(21)
Common stock dividends declared							$ (950)		0	0	(950)	0									(7)			(7)		$ (13)			(13)
New Accounting Pronouncement or Change in Accounting Principle, Effect of Change on Operating Results	67			56		11
Common stock, value, repurchased	(36)		(3)	(33)
Other equity transactions	$ (22)	$ 0	(17)	0	0	(5)											(1)		(1)		$ 2				2
Balance (shares) at Dec. 31, 2015	77,000,000	77,000,000					357,000,000							70,980,203							1,000	1,000				1,000	1,000
Balance at Dec. 31, 2015	$ 22,535	$ 0	6,403	16,906	(908)	134
Balance at Dec. 31, 2015	22,401						$ 7,503	2	0	4,479	3,033	(11)	4,705	$ 561	4,174	(30)	5,525	1,679	3,876	(30)	$ 1,076	$ 0	1,111	(35)	0	$ 3,163	$ 0	2,308	858	(3)
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net income	2,556	0	0	2,542	0	14
Net income	2,570
Net income (loss) attributable to parent	2,542						763		0	0	763	0	542		542		532		532		84			84		279			279
Other comprehensive income (loss)	(603)	0	0	0	(603)	0	(1)		0	0	0	(1)	3			3	3			3
Stockholders' equity transfer to affiliate																	27			27
Dividend, noncash, transfer of operations													(90)		(117)	(27)	(90)
Distributions	(20)	0	0	0	0	(20)
Common stock dividends declared							$ (875)		0	0	(875)	0									(51)			(51)		(469)			(469)
Other equity transactions	$ (5)	$ 0	(13)	0	0	8											(1)		(1)		$ (1)				(1)	$ (1)			(1)
Balance (shares) at Dec. 31, 2016	77,000,000	77,000,000					357,000,000							70,980,203							1,000	1,000				1,000	1,000
Balance at Dec. 31, 2016	$ 24,463	$ 0	$ 6,390	$ 19,448	$ (1,511)	$ 136
Balance at Dec. 31, 2016	$ 24,327						$ 7,390	$ 2	$ 0	$ 4,479	$ 2,921	$ (12)	$ 5,160	$ 561	$ 4,599	$ 0	$ 6,086	$ 1,679	$ 4,407	$ 0	$ 1,108	$ 0	$ 1,111	$ (2)	$ (1)	$ 2,972	$ 0	$ 2,308	$ 667	$ (3)